JP4136579B2 - Polytrimethylene terephthalate resin composition and method for producing the same - Google Patents
Polytrimethylene terephthalate resin composition and method for producing the same Download PDFInfo
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- JP4136579B2 JP4136579B2 JP2002288849A JP2002288849A JP4136579B2 JP 4136579 B2 JP4136579 B2 JP 4136579B2 JP 2002288849 A JP2002288849 A JP 2002288849A JP 2002288849 A JP2002288849 A JP 2002288849A JP 4136579 B2 JP4136579 B2 JP 4136579B2
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- Prior art keywords
- polymer
- acid
- cyclic dimer
- polytrimethylene terephthalate
- melt
- Prior art date
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- -1 Polytrimethylene terephthalate Polymers 0.000 title claims description 88
- 229920002215 polytrimethylene terephthalate Polymers 0.000 title claims description 40
- 239000011342 resin composition Substances 0.000 title claims description 16
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 229920000642 polymer Polymers 0.000 claims description 96
- 239000003054 catalyst Substances 0.000 claims description 35
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 34
- 229910052698 phosphorus Inorganic materials 0.000 claims description 30
- 238000006116 polymerization reaction Methods 0.000 claims description 27
- 239000011574 phosphorus Substances 0.000 claims description 25
- 238000006068 polycondensation reaction Methods 0.000 claims description 23
- 150000002736 metal compounds Chemical class 0.000 claims description 21
- 229910052751 metal Inorganic materials 0.000 claims description 16
- 239000002184 metal Substances 0.000 claims description 16
- 125000004429 atom Chemical group 0.000 claims description 7
- 150000001875 compounds Chemical class 0.000 claims description 6
- NMYFVWYGKGVPIW-UHFFFAOYSA-N 3,7-dioxabicyclo[7.2.2]trideca-1(11),9,12-triene-2,8-dione Chemical group O=C1OCCCOC(=O)C2=CC=C1C=C2 NMYFVWYGKGVPIW-UHFFFAOYSA-N 0.000 claims description 5
- 125000004437 phosphorous atom Chemical group 0.000 claims description 5
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 2
- 230000009467 reduction Effects 0.000 claims description 2
- 125000004122 cyclic group Chemical group 0.000 description 81
- 239000008188 pellet Substances 0.000 description 69
- 238000006243 chemical reaction Methods 0.000 description 26
- 239000000155 melt Substances 0.000 description 25
- 238000002844 melting Methods 0.000 description 22
- 230000008018 melting Effects 0.000 description 22
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 16
- YPFDHNVEDLHUCE-UHFFFAOYSA-N 1,3-propanediol Substances OCCCO YPFDHNVEDLHUCE-UHFFFAOYSA-N 0.000 description 15
- 239000010936 titanium Substances 0.000 description 15
- QLZHNIAADXEJJP-UHFFFAOYSA-N Phenylphosphonic acid Chemical compound OP(O)(=O)C1=CC=CC=C1 QLZHNIAADXEJJP-UHFFFAOYSA-N 0.000 description 14
- 239000012299 nitrogen atmosphere Substances 0.000 description 14
- 239000002245 particle Substances 0.000 description 14
- 239000000843 powder Substances 0.000 description 14
- 238000010298 pulverizing process Methods 0.000 description 14
- 230000007480 spreading Effects 0.000 description 14
- 238000003892 spreading Methods 0.000 description 14
- 229920000166 polytrimethylene carbonate Polymers 0.000 description 13
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 12
- 239000002253 acid Substances 0.000 description 12
- DNIAPMSPPWPWGF-VKHMYHEASA-N (+)-propylene glycol Chemical compound C[C@H](O)CO DNIAPMSPPWPWGF-VKHMYHEASA-N 0.000 description 11
- 238000005755 formation reaction Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 238000001556 precipitation Methods 0.000 description 10
- 238000004383 yellowing Methods 0.000 description 10
- 230000015572 biosynthetic process Effects 0.000 description 9
- 150000002739 metals Chemical class 0.000 description 8
- 239000000243 solution Substances 0.000 description 8
- 238000005809 transesterification reaction Methods 0.000 description 8
- 239000000047 product Substances 0.000 description 7
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 6
- 230000015556 catabolic process Effects 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 230000007423 decrease Effects 0.000 description 6
- 238000006731 degradation reaction Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000000178 monomer Substances 0.000 description 6
- 238000005070 sampling Methods 0.000 description 6
- 239000007790 solid phase Substances 0.000 description 6
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- YHWCPXVTRSHPNY-UHFFFAOYSA-N butan-1-olate;titanium(4+) Chemical compound [Ti+4].CCCC[O-].CCCC[O-].CCCC[O-].CCCC[O-] YHWCPXVTRSHPNY-UHFFFAOYSA-N 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 238000005886 esterification reaction Methods 0.000 description 5
- 239000003973 paint Substances 0.000 description 5
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 5
- YZTJKOLMWJNVFH-UHFFFAOYSA-N 2-sulfobenzene-1,3-dicarboxylic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1S(O)(=O)=O YZTJKOLMWJNVFH-UHFFFAOYSA-N 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- WQDUMFSSJAZKTM-UHFFFAOYSA-N Sodium methoxide Chemical compound [Na+].[O-]C WQDUMFSSJAZKTM-UHFFFAOYSA-N 0.000 description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 4
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 description 4
- 239000005020 polyethylene terephthalate Substances 0.000 description 4
- 239000002244 precipitate Substances 0.000 description 4
- 229910052718 tin Inorganic materials 0.000 description 4
- 229910052719 titanium Inorganic materials 0.000 description 4
- 229910052725 zinc Inorganic materials 0.000 description 4
- 239000011701 zinc Substances 0.000 description 4
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 4
- UAYWVJHJZHQCIE-UHFFFAOYSA-L zinc iodide Chemical compound I[Zn]I UAYWVJHJZHQCIE-UHFFFAOYSA-L 0.000 description 4
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- ABLZXFCXXLZCGV-UHFFFAOYSA-N Phosphorous acid Chemical compound OP(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 description 3
- VSGNNIFQASZAOI-UHFFFAOYSA-L calcium acetate Chemical compound [Ca+2].CC([O-])=O.CC([O-])=O VSGNNIFQASZAOI-UHFFFAOYSA-L 0.000 description 3
- 239000001639 calcium acetate Substances 0.000 description 3
- 229960005147 calcium acetate Drugs 0.000 description 3
- 235000011092 calcium acetate Nutrition 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 3
- 239000007795 chemical reaction product Substances 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- SZXQTJUDPRGNJN-UHFFFAOYSA-N dipropylene glycol Chemical compound OCCCOCCCO SZXQTJUDPRGNJN-UHFFFAOYSA-N 0.000 description 3
- 150000002148 esters Chemical class 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- KSBAEPSJVUENNK-UHFFFAOYSA-L tin(ii) 2-ethylhexanoate Chemical compound [Sn+2].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O KSBAEPSJVUENNK-UHFFFAOYSA-L 0.000 description 3
- 150000003609 titanium compounds Chemical class 0.000 description 3
- 229910052727 yttrium Inorganic materials 0.000 description 3
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 3
- FJEKUEUBQQWPBY-UHFFFAOYSA-N 1$l^{2}-stanninane Chemical compound C1CC[Sn]CC1 FJEKUEUBQQWPBY-UHFFFAOYSA-N 0.000 description 2
- LSGSSTRMKJNXRE-UHFFFAOYSA-N 2-phosphonoterephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C(P(O)(O)=O)=C1 LSGSSTRMKJNXRE-UHFFFAOYSA-N 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- 229910052684 Cerium Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 2
- 229910052772 Samarium Inorganic materials 0.000 description 2
- 229910052769 Ytterbium Inorganic materials 0.000 description 2
- FMRLDPWIRHBCCC-UHFFFAOYSA-L Zinc carbonate Chemical compound [Zn+2].[O-]C([O-])=O FMRLDPWIRHBCCC-UHFFFAOYSA-L 0.000 description 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 2
- ISKQADXMHQSTHK-UHFFFAOYSA-N [4-(aminomethyl)phenyl]methanamine Chemical compound NCC1=CC=C(CN)C=C1 ISKQADXMHQSTHK-UHFFFAOYSA-N 0.000 description 2
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 2
- ZOIORXHNWRGPMV-UHFFFAOYSA-N acetic acid;zinc Chemical compound [Zn].CC(O)=O.CC(O)=O ZOIORXHNWRGPMV-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 150000004703 alkoxides Chemical class 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- SMZOGRDCAXLAAR-UHFFFAOYSA-N aluminium isopropoxide Chemical compound [Al+3].CC(C)[O-].CC(C)[O-].CC(C)[O-] SMZOGRDCAXLAAR-UHFFFAOYSA-N 0.000 description 2
- 229910052787 antimony Inorganic materials 0.000 description 2
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 2
- 229910000410 antimony oxide Inorganic materials 0.000 description 2
- 229910052788 barium Inorganic materials 0.000 description 2
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 2
- 230000000740 bleeding effect Effects 0.000 description 2
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 2
- BVFSYZFXJYAPQJ-UHFFFAOYSA-N butyl(oxo)tin Chemical compound CCCC[Sn]=O BVFSYZFXJYAPQJ-UHFFFAOYSA-N 0.000 description 2
- NPAIMXWXWPJRES-UHFFFAOYSA-N butyltin(3+) Chemical compound CCCC[Sn+3] NPAIMXWXWPJRES-UHFFFAOYSA-N 0.000 description 2
- 229910052793 cadmium Inorganic materials 0.000 description 2
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 2
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 2
- ZMIGMASIKSOYAM-UHFFFAOYSA-N cerium Chemical compound [Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce] ZMIGMASIKSOYAM-UHFFFAOYSA-N 0.000 description 2
- 238000007600 charging Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000007334 copolymerization reaction Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- JVLRYPRBKSMEBF-UHFFFAOYSA-K diacetyloxystibanyl acetate Chemical compound [Sb+3].CC([O-])=O.CC([O-])=O.CC([O-])=O JVLRYPRBKSMEBF-UHFFFAOYSA-K 0.000 description 2
- JGFBRKRYDCGYKD-UHFFFAOYSA-N dibutyl(oxo)tin Chemical compound CCCC[Sn](=O)CCCC JGFBRKRYDCGYKD-UHFFFAOYSA-N 0.000 description 2
- 239000012975 dibutyltin dilaurate Substances 0.000 description 2
- WOZVHXUHUFLZGK-UHFFFAOYSA-N dimethyl terephthalate Chemical compound COC(=O)C1=CC=C(C(=O)OC)C=C1 WOZVHXUHUFLZGK-UHFFFAOYSA-N 0.000 description 2
- 150000002009 diols Chemical class 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 229910052732 germanium Inorganic materials 0.000 description 2
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 2
- YBMRDBCBODYGJE-UHFFFAOYSA-N germanium oxide Inorganic materials O=[Ge]=O YBMRDBCBODYGJE-UHFFFAOYSA-N 0.000 description 2
- 229910052735 hafnium Inorganic materials 0.000 description 2
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 2
- 150000004820 halides Chemical class 0.000 description 2
- 239000012760 heat stabilizer Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 2
- 229910052746 lanthanum Inorganic materials 0.000 description 2
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 2
- ICAKDTKJOYSXGC-UHFFFAOYSA-K lanthanum(iii) chloride Chemical compound Cl[La](Cl)Cl ICAKDTKJOYSXGC-UHFFFAOYSA-K 0.000 description 2
- 229940046892 lead acetate Drugs 0.000 description 2
- 229910000464 lead oxide Inorganic materials 0.000 description 2
- PIJPYDMVFNTHIP-UHFFFAOYSA-L lead sulfate Chemical compound [PbH4+2].[O-]S([O-])(=O)=O PIJPYDMVFNTHIP-UHFFFAOYSA-L 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- XIXADJRWDQXREU-UHFFFAOYSA-M lithium acetate Chemical compound [Li+].CC([O-])=O XIXADJRWDQXREU-UHFFFAOYSA-M 0.000 description 2
- 229940071257 lithium acetate Drugs 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- UEGPKNKPLBYCNK-UHFFFAOYSA-L magnesium acetate Chemical compound [Mg+2].CC([O-])=O.CC([O-])=O UEGPKNKPLBYCNK-UHFFFAOYSA-L 0.000 description 2
- 239000011654 magnesium acetate Substances 0.000 description 2
- 235000011285 magnesium acetate Nutrition 0.000 description 2
- 229940069446 magnesium acetate Drugs 0.000 description 2
- CRGZYKWWYNQGEC-UHFFFAOYSA-N magnesium;methanolate Chemical compound [Mg+2].[O-]C.[O-]C CRGZYKWWYNQGEC-UHFFFAOYSA-N 0.000 description 2
- 229940071125 manganese acetate Drugs 0.000 description 2
- UOGMEBQRZBEZQT-UHFFFAOYSA-L manganese(2+);diacetate Chemical compound [Mn+2].CC([O-])=O.CC([O-])=O UOGMEBQRZBEZQT-UHFFFAOYSA-L 0.000 description 2
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 2
- 238000010128 melt processing Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- WWZKQHOCKIZLMA-UHFFFAOYSA-N octanoic acid Chemical compound CCCCCCCC(O)=O WWZKQHOCKIZLMA-UHFFFAOYSA-N 0.000 description 2
- CDXVUROVRIFQMV-UHFFFAOYSA-N oxo(diphenoxy)phosphanium Chemical compound C=1C=CC=CC=1O[P+](=O)OC1=CC=CC=C1 CDXVUROVRIFQMV-UHFFFAOYSA-N 0.000 description 2
- VTRUBDSFZJNXHI-UHFFFAOYSA-N oxoantimony Chemical compound [Sb]=O VTRUBDSFZJNXHI-UHFFFAOYSA-N 0.000 description 2
- PVADDRMAFCOOPC-UHFFFAOYSA-N oxogermanium Chemical compound [Ge]=O PVADDRMAFCOOPC-UHFFFAOYSA-N 0.000 description 2
- YEXPOXQUZXUXJW-UHFFFAOYSA-N oxolead Chemical compound [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- KZUNJOHGWZRPMI-UHFFFAOYSA-N samarium atom Chemical compound [Sm] KZUNJOHGWZRPMI-UHFFFAOYSA-N 0.000 description 2
- BHXBZLPMVFUQBQ-UHFFFAOYSA-K samarium(iii) chloride Chemical compound Cl[Sm](Cl)Cl BHXBZLPMVFUQBQ-UHFFFAOYSA-K 0.000 description 2
- 229910052706 scandium Inorganic materials 0.000 description 2
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 238000000859 sublimation Methods 0.000 description 2
- 230000008022 sublimation Effects 0.000 description 2
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 2
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 2
- 229910001887 tin oxide Inorganic materials 0.000 description 2
- HPGGPRDJHPYFRM-UHFFFAOYSA-J tin(iv) chloride Chemical compound Cl[Sn](Cl)(Cl)Cl HPGGPRDJHPYFRM-UHFFFAOYSA-J 0.000 description 2
- VXUYXOFXAQZZMF-UHFFFAOYSA-N titanium(IV) isopropoxide Chemical compound CC(C)O[Ti](OC(C)C)(OC(C)C)OC(C)C VXUYXOFXAQZZMF-UHFFFAOYSA-N 0.000 description 2
- YJGJRYWNNHUESM-UHFFFAOYSA-J triacetyloxystannyl acetate Chemical compound [Sn+4].CC([O-])=O.CC([O-])=O.CC([O-])=O.CC([O-])=O YJGJRYWNNHUESM-UHFFFAOYSA-J 0.000 description 2
- 239000013638 trimer Substances 0.000 description 2
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 0.000 description 2
- 239000004246 zinc acetate Substances 0.000 description 2
- 229960000314 zinc acetate Drugs 0.000 description 2
- 239000011667 zinc carbonate Substances 0.000 description 2
- 235000004416 zinc carbonate Nutrition 0.000 description 2
- 229910000010 zinc carbonate Inorganic materials 0.000 description 2
- 239000011592 zinc chloride Substances 0.000 description 2
- 235000005074 zinc chloride Nutrition 0.000 description 2
- LRXTYHSAJDENHV-UHFFFAOYSA-H zinc phosphate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LRXTYHSAJDENHV-UHFFFAOYSA-H 0.000 description 2
- 229910000165 zinc phosphate Inorganic materials 0.000 description 2
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 2
- 229960001763 zinc sulfate Drugs 0.000 description 2
- 229910000368 zinc sulfate Inorganic materials 0.000 description 2
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Description
【0001】
【発明の属する技術分野】
本発明は、ポリトリメチレンテレフタレート樹脂組成物およびその製造方法に関する。さらに詳しくは溶融熱安定性に優れるとともに、製造時および溶融後加工時の環状ダイマーの生成及び析出が少なく成形性に優れる上、その成形体が塗料、糊剤の塗布性や、接着性に優れていることを特徴とするポリトリメチレンテレフタレート樹脂組成物に関する。
【0002】
【従来の技術】
ポリエステル、特にポリエチレンテレフタレートは、優れた物理的、化学的特性を有し、繊維、フィルム、その他成形体として広く利用されているが、柔軟性に乏しい。一方、テレフタル酸やテレフタル酸の低級アルコールエステルと1,3−プロパンジオール(トリメチレングリコールともいう)とを溶融重合、又は一旦溶融重合して得たプレポリマーを更に固相重合することで合成されるポリトリメチレンテレフタレートは、柔軟性に優れた素材であり、またガラス転移温度や融点がナイロン6のそれらに近いうえ吸湿による物性への影響が少ないなど、既存の素材では得られない多くの特徴を兼ね備えている。
【0003】
ポリトリメチレンテレフタレートの製造に当たっては、その重縮合反応を円滑に進行させるために触媒が必要であり、種々の金属化合物、特に有機チタン系化合物が触媒として広く使用されている。しかしながらこれら金属化合物を触媒として製造したポリマーを長時間溶融状態で滞留させるとポリマーの熱劣化が進行し、分子量が低下したり、色調が悪化する問題がある。さらに溶融滞留時にオリゴマーが生成する問題がある。オリゴマーの約90重量%は環状ダイマーであるが、環状ダイマーは昇華性、ブリードアウト性を有するために、例えば射出成形では、成形金型に析出してモールドデポジットとなり、成形体の外観や寸法精度を損なったり、成形体を製造した後でもその表面に環状ダイマーがブリードアウトするために塗料や糊剤の塗布性や、接着性が損なわれる。
【0004】
ポリマーの溶融滞留時の熱劣化の問題は、類似骨格を有するポリエチレンテレフタレートと比較してポリトリメチレンテレフタレートの方が、色調の悪化の度合い及び溶融粘度低下率が大きく問題の程度はより深刻である。またオリゴマーに関してもポリエチレンテレフタレートではその存在量が1重量%程度であるのに対してポリトリメチレンテレフタレートでは約2.5〜3.5重量%と多く、更にポリエチレンテレフタレートではこのオリゴマーは環状三量体が大部分で、ポリトリメチレンテレフタレートの環状ダイマーよりも分子量が大きいため昇華性やブリードアウト性が小さい。従って問題の程度はポリトリメチレンテレフタレートの方がより深刻である。
【0005】
ポリトリメチレンテレフタレートの溶融熱安定性を改良する試みとして、特定のチタン化合物とリン化合物を予め反応させて得られる反応生成物を触媒として製造する方法が提案されている(例えば、特許文献1参照。)。しかしながら、この特許文献の如くチタン化合物とリン化合物を予め反応させて得られる反応生成物を触媒とすると、ポリマーの色調は改良されるものの、重合速度が大幅に低下するため、触媒としてチタン化合物以外に酢酸カルシウムとの併用が必要であったり、多量の触媒を使用する必要があり、溶融熱安定性がかえって低下するなどの問題があった。また、重合に長時間を要し生産性が低下するうえ、実用に足る高重合度のポリマーの製造が得られ難く、その成形体の塗料、糊剤の塗布性や、接着性を再現性よく評価することも困難であった。
【0006】
【特許文献1】
特開2001−278971号公報
【0007】
【発明が解決しようとする課題】
本発明の目的は、上記問題を解決し、溶融熱安定性に優れるとともに、溶融滞留時の環状ダイマーの生成及び析出が少なく成形性に優れる上、その成形体が塗料、糊剤の塗布性や、接着性にも優れていることを特徴とするポリトリメチレンテレフタレート樹脂組成物を提供することにある。
【0008】
【課題を解決するための手段】
これらの問題を解決するために、本発明者らはポリトリメチレンテレフタレートの熱劣化の挙動及び環状ダイマーの生成挙動について詳細に解析した結果、ポリマーの熱劣化は水酸基末端の濃度と関係があり、水酸基末端濃度がポリマー1kg当たり0.02mol未満に低下すると色調の悪化など熱劣化が急激に進行することを見出した。水酸基末端濃度の低下に伴い金属化合物触媒の配位状態が変化することによって、熱劣化が促進された可能性がある。我々は金属化合物触媒に起因する熱劣化を防止する技術を鋭意検討した結果、水酸基末端の濃度がポリマー1kg当たり0.02〜0.19molの範囲である極限粘度が0.5dl/g以上のポリトリメチレンテレフタレートに、一般式(1)で表される特定のリン化合物を、金属化合物触媒に対してリン原子と金属原子とのグラム原子比(P/M)が0.1〜10の範囲であるように溶融混合することによって、熱劣化を大幅に低減できることを見出した。さらにこのようにして製造したポリトリメチレンテレフタレート樹脂組成物は、溶融滞留時の環状ダイマーの析出が少ないことを見出した。さらに詳細に検討を行ったところ、溶融滞留時の環状ダイマーの生成量が大幅に低減しており、金属化合物触媒に一般式(1)で表される特定のリン化合物が配位したことによって、環状ダイマーの生成反応が阻害されたものと考えられる。本発明のポリトリメチレンテレフタレート樹脂組成物は、成形体表面への環状ダイマーのブリードアウトも少なく、成形体の塗料、糊剤の塗布性や、接着性が大幅に改良されることを見出し、本発明に到達した。
【0009】
すなわち、本発明は、
(1)金属化合物触媒の存在下製造された、繰り返し単位の80重量%以上がトリメチレンテレフタレート単位からなり、ポリマー1kg当たりの水酸基末端濃度が0.02〜0.19molの範囲である、極限粘度が0.5dl/g以上のポリトリメチレンテレフタレート樹脂に、下記一般式(I)で表されるリン化合物を、金属化合物触媒に対してリン原子と金属原子とのグラム原子比(P/M)が0.1〜10の範囲であるように溶融混合してなるポリトリメチレンテレフタレート樹脂組成物、
(R)mPO(OH)3−m (I)
(Rはフェニル基、またはカルボキシル基を有するフェニル基であり、mは1〜2である)
【0010】
(2)金属化合物触媒の存在下製造される、繰り返し単位の80重量%以上がトリメチレンテレフタレート単位からなる極限粘度が0.5dl/g以上のポリトリメチレンテレフタレート樹脂組成物であって、重縮合反応の進行に伴う水酸基末端濃度の減少により、ポリマー1kg当たりの水酸基末端濃度が0.19mol以下から0.02mol以上の範囲にある任意の段階で、重合装置中に一般式(I)で表されるリン化合物を、金属化合物触媒に対してリン原子と金属原子とのグラム原子比(P/M)が0.1〜10の範囲であるように添加し含有させることを特徴とするポリトリメチレンテレフタレート樹脂組成物の製造方法に関する。
【0011】
本発明のポリトリメチレンテレフタレート樹脂組成物を構成するポリトリメチレンテレフタレートは金属化合物触媒の存在下製造された、繰り返し単位の80重量%以上がトリメチレンテレフタレート単位からなる、ポリマー1kg当たりの水酸基末端濃度が0.02〜0.19molの範囲である、極限粘度が0.5dl/g以上のポリトリメチレンテレフタレートである。
極限粘度が0.5dl/g未満の場合は、成形加工品の強度が低い。極限粘度の上限については特に制限はないが、2dl/gを越える場合は、溶融粘度が高すぎるために成形加工が困難となるので、好ましくは0.7〜1.5dl/g、特に好ましくは0.8〜1.4dl/gであり、最も好ましくは0.85〜1.3dl/gである。
【0012】
本発明のポリトリメチレンテレフタレートの主骨格を形成する原料モノマーとしては、テレフタル酸と1,3−プロパンジオール以外に、繰り返し単位の20重量%未満で他のモノマーを共重合してもよい。共重合するモノマーは、ジオール、ジカルボン酸、ジカルボン酸エステル、ジカルボン酸アミド、オキシカルボン酸など特に制限はない。具体例としてはエチレングリコール、1,2−プロパンジオール、1,4−ブタンジオール、1,5−ペンタンジオール、1,6−ヘキサンジオール、1,4−シクロヘキサンジメタノール等のジオール、シュウ酸、マロン酸、コハク酸、グルタル酸、アジピン酸、イソフタル酸、2,6−ナフタレンジカルボン酸、ビフェニルジカルボン酸、5−ナトリウムスルホイソフタル酸、5−カリウムスルホイソフタル酸、5−リチウムスルホイソフタル酸、2−ナトリウムスルホイソフタル酸、2−カリウムスルホイソフタル酸、2−リチウムスルホイソフタル酸、4−ナトリウムスルホ−2,6−ナフタレンジカルボン酸、2−ナトリウムスルホ−4−ヒドロキシ安息香酸、5−スルホイソフタル酸テトラブチルホスホニウム等のジカルボン酸及びそのメタノール等の低級アルコールエステル、オキシ酢酸、オキシ安息香酸等のオキシカルボン酸及びそのメタノール等の低級アルコールエステル、更には分子量が200〜100000のポリエチレングリコール、ポリテトラメチレングリコール等のポリオールであってもよい。また必要に応じて2種類以上のエステル形成性モノマーを共重合させてもよい。
【0013】
また、重合過程で生成する共重合成分、例えば、1,3−プロパンジオールのダイマー(ビス(3−ヒドロキシプロピル)エーテル)が共重合されていてもよい。ビス(3−ヒドロキシプロピル)エーテルは、重合過程で1,3−プロパンジオールやポリマー分子末端の3−ヒドロキシプロピル基が更に1,3−プロパンジオールと反応して生成し、そのままポリトリメチレンテレフタレートに共重合してポリトリメチレンテレフタレートの耐光性や耐熱性を低下させるが、適度に共重合されると繊維の染料吸尽率や紡糸安定性を高める効果もある。従って、適度にビス(3−ヒドロキシプロピル)エーテルは共重合されることが好ましく、その共重合比率としては0.01〜2重量%、好ましくは0.04〜1.2重量%である。
【0014】
本発明のポリトリメチレンテレフタレート樹脂組成物の好ましい製造方法は、テレフタル酸及び/又はその低級アルコールエステルと1,3−プロパンジオールを反応させてテレフタル酸の1,3−プロパンジオールエステル及び/又はそのオリゴマーを生成させ、それを重縮合させる方法である。本発明で用いるテレフタル酸、テレフタル酸の低級アルコールエステル、1,3−プロパンジオールは、市販のもの、あるいはポリトリメチレンテレフタレートやポリトリメチレンテレフタレート製品から回収されたものでもよく、好ましくは純度95%以上、更に好ましくは98%以上である。
重合原料であるテレフタル酸やテレフタル酸の低級アルコールエステルに対する1,3−プロパンジオールの仕込み比率はモル比で0.8〜3であることが好ましい。仕込み比率が0.8未満では、エステル交換反応が進行しにくく、また仕込み比率が3より大きくなると融点が低くなるほか、得られたポリマーの白度が低下する傾向がある。好ましくは、1.4〜2.5であり、さらに好ましくは1.5〜2.3である。
【0015】
触媒は反応を円滑に進行させるため必要であり、エステル化反応またはエステル交換反応では、例えばマグネシウム、カルシウム、バリウム、スカンジウム、イットリウム、チタン、ジルコニウム、ハフニウム、マンガン、鉄、コバルト、ニッケル、銅、亜鉛、カドミウム、アルミニウム、ゲルマニウム、スズ、鉛、アンチモン、ランタン、セリウム、サマリウム、イッテルビウム等の金属について、ナトリウムメチラート、マグネシウムメチラート、アルミニウムイソプロポキシド、亜鉛グリコキシド、亜鉛フェノキシド、チタンテトラブトキシド、チタンテトライソプロポキシドに代表されるアルコキサイド。及び上記の金属の、酢酸リチウム、酢酸カルシウム、酢酸マグネシウム、酢酸マンガン、酢酸亜鉛、酪酸亜鉛、酢酸スズ、オクチル酸スズ、2−エチルヘキサン酸スズ、酢酸鉛、酢酸アンチモン、蓚酸チタンに代表されるカルボン酸塩。及び上記の金属の、炭酸カルシウム、炭酸亜鉛に代表される炭酸塩。及び上記の金属の、酸化アンチモン、酸化ゲルマニウム、酸化鉛、酸化スズ、非晶性酸化チタン沈殿物、非晶性酸化チタン/シリカ共沈殿物、非晶性ジルコニア沈殿物に代表される酸化物。及び上記の金属の、塩化亜鉛、ヨウ化亜鉛、塩化スズ、塩化ランタン、塩化サマリウムに代表されるハロゲン化物。及び上記の金属の、硫酸亜鉛、硫酸鉛に代表される硫酸塩。及び、上記の金属の、リン酸亜鉛に代表されるリン酸塩。及びモノブチルスズオキサイド、ジブチルスズオキサイド、モノブチルスズトリオクチルエステル、ジブチルスズジアセテート、ジブチルスズジラウレート、スタノキサンに代表されるオルガノスズ化合物等。以上の触媒から選ばれる1種以上を、全カルボン酸成分モノマーに対して0.01〜0.2重量%、好ましくは0.05〜0.12重量%用いることが反応速度、ポリマーの白度、熱安定性を兼ね備え好ましい。
【0016】
反応温度としては200℃から250℃程度で、副生する水やメタノール等のアルコールを留去しながら反応を行うことができる。反応時間は通常2〜10時間、好ましくは2〜4時間である。こうして得られた反応物は、テレフタル酸の1,3−プロパンジオールエステル及び/又はそのオリゴマーである。以上のエステル化反応、エステル交換反応は、必要に応じて2つ以上の反応釜に分けて順次連続的に行ってもよい。
ポリトリメチレンテレフタレート樹脂組成物は、こうして得られたテレフタル酸の1,3−プロパンジオールエステル及び/又はそのオリゴマーを更に重縮合することにより製造することができる。
【0017】
重縮合反応では、必要に応じて更にマグネシウム、カルシウム、バリウム、スカンジウム、イットリウム、チタン、ジルコニウム、ハフニウム、マンガン、鉄、コバルト、ニッケル、銅、亜鉛、カドミウム、アルミニウム、ゲルマニウム、スズ、鉛、アンチモン、ランタン、セリウム、サマリウム、イッテルビウム等の金属の、ナトリウムメチラート、マグネシウムメチラート、アルミニウムイソプロポキシド、亜鉛グリコキシド、亜鉛フェノキシド、チタンテトラブトキシド、チタンテトライソプロポキシドに代表されるアルコキサイド。及び上記の金属の、酢酸リチウム、酢酸カルシウム、酢酸マグネシウム、酢酸マンガン、酢酸亜鉛、酪酸亜鉛、酢酸スズ、オクチル酸スズ、2−エチルヘキサン酸スズ、酢酸鉛、酢酸アンチモン、蓚酸チタンに代表されるカルボン酸塩。及び上記の金属の、炭酸カルシウム、炭酸亜鉛に代表される炭酸塩。及び上記の金属の、酸化アンチモン、酸化ゲルマニウム、酸化鉛、酸化スズ、非晶性酸化チタン沈殿物、非晶性酸化チタン/シリカ共沈殿物、非晶性ジルコニア沈殿物に代表される酸化物。及び上記の金属の、塩化亜鉛、ヨウ化亜鉛、塩化スズ、塩化ランタン、塩化サマリウムに代表されるハロゲン化物。及び上記の金属の、硫酸亜鉛、硫酸鉛に代表される硫酸塩。及び、上記の金属の、リン酸亜鉛に代表されるリン酸塩。及びモノブチルスズオキサイド、ジブチルスズオキサイド、モノブチルスズトリオクチルエステル、ジブチルスズジアセテート、ジブチルスズジラウレート、スタノキサンに代表されるオルガノスズ化合物等。以上の触媒から選ばれる1種以上を、全カルボン酸成分モノマーに対して0.01〜0.2重量%、好ましくは0.03〜0.15重量%添加する。この重縮合触媒は、エステル化反応やエステル交換反応で用いた触媒をそのまま使用することも出来るし、新たに追加してもよい。これらの触媒のうち、チタン系の触媒はエステル化反応、エステル交換反応、重縮合反応のいずれにも有効な触媒でありエステル化反応やエステル交換反応段階で添加しておくと、重縮合反応前に新たに添加することなく、あるいは添加するにしても少量で重縮合反応を行うことが出来る点で最も好ましい触媒である。
【0018】
重縮合反応においては、1,3−プロパンジオールや更にはエステル化反応やエステル交換反応で生成した反応系に残存する水やアルコールを効率的に排出させるために、減圧中で重縮合することが好ましく、適用する真空度としては0.0001〜2torr、好ましくは0.01〜0.7torrである。ポリトリメチレンテレフタレートに共重合を行う場合は重合の任意の段階で、コモノマーを添加することが出来る。
【0019】
本発明は、水酸基末端の濃度がポリマー1kg当たり0.02〜0.19molの範囲である、極限粘度が0.5dl/g以上のポリトリメチレンテレフタレートに、一般式(I)で表されるリン化合物を添加し溶融混合することが必要であり、この濃度範囲で存在する水酸基末端が、金属化合物触媒とリン化合物の好ましい配位構造の形成のために有効に作用するものと考えられる。水酸基末端の濃度がポリマー1kg当たり0.19molより大きい場合、一般式(I)で表されるリン化合物は金属化合物触媒と直ちに反応し、凝集して触媒活性が著しく低下するため、リン化合物を添加した後で溶融重合あるいは固相重合を継続して実用に足る高分子量のポリトリメチレンテレフタレートを製造することは困難である。一方、水酸基末端の濃度がポリマー1kg当たり0.02mol未満である場合、溶融熱安定性及び環状ダイマーの改良の程度は充分ではない。水酸基末端濃度がポリマー1kg当たり0.02mol未満であると、金属化合物触媒とリン化合物との反応に先行して金属化合物触媒同士の凝集が進行しており、金属化合物触媒とリン化合物の好ましい配位構造が形成されなかった可能性があるが、まだ明確ではない。ポリマー1kg当たりの水酸基末端濃度が0.02mol〜0.19molの範囲である場合のみ溶融熱安定性を改良し、さらに溶融滞留時の環状ダイマーの析出を低減することが可能となる。また本発明の条件で一般式(I)で表されるリン化合物を添加した場合には、金属化合物触媒の活性が保持されるため、リン化合物の添加後に溶融重合あるいは固相重合を継続することで、さらに高分子量のポリトリメチレンテレフタレートを、生産性を損なうこともなく製造することが可能である。
【0020】
一般式(I)で表されるリン化合物を添加するときの、ポリトリメチレンテレフタレートの水酸基末端の濃度がポリマー1kg当たり0.02mol〜0.19molの範囲であるとき、水酸基末端濃度が高い方が溶融熱安定性がより改良される傾向がある一方、水酸基末端濃度が低い方が溶融滞留時の環状ダイマーの析出量がより低減する傾向及び、成形体の塗料や糊剤の塗布性、接着性がより向上する傾向が認められる。これらの原因はまだ明確ではないが、溶融熱安定性の改良には主に触媒活性の低減が有効であり、環状ダイマーの析出量や成形体の塗料や糊剤の塗布性、接着性の改良には触媒活性の低減以外にも一般式(I)で表される特定の構造を有するリン化合物と金属化合物触媒からなる好ましい配位構造を有する化合物を含有すること自体によるポリマーの極性の改良などの、複数の要因が関与しているものと考えられる。上記の性能のバランスの面から、一般式(I)で表されるリン化合物を添加するときの、ポリトリメチレンテレフタレートのより好ましい水酸基末端濃度はポリマー1kg当たり0.03〜0.16molの範囲であり、さらに好ましくは0.04〜0.12molの範囲であり、最も好ましくは0.05〜0.09molの範囲である。
【0021】
一般式(I)で表される化合物としては、フェニルホスホン酸、メチルホスホン酸、エチルホスホン酸、プロピルホスホン酸、イソプロピルホスホン酸、ブチルホスホン酸、トリルホスホン酸、キシリルホスホン酸、ビフェニリルホスホン酸、ナフチルホスホン酸、アントリルホスホン酸、2−カルボキシフェニルホスホン酸、3−カルボキシフェニルホスホン酸、4−カルボキシフェニルホスホン酸、2,3−ジカルボキシフェニルホスホン酸、2,4−ジカルボキシフェニルホスホン酸、2,5−ジカルボキシフェニルホスホン酸、2,6−ジカルボキシフェニルホスホン酸、3,4−ジカルボキシフェニルホスホン酸、3,5−ジカルボキシフェニルホスホン酸、2,3,4−トリカルボキシフェニルホスホン酸、2,3,5−トリカルボキシフェニルホスホン酸、2,3,6−トリカルボキシフェニルホスホン酸、2,4,5−トリカルボキシフェニルホスホン酸、2,4,6−トリカルボキシフェニルホスホン酸、ジフェニルホスホン酸、ビス(2−カルボキシフェニル)ホスホン酸、ビス(3−カルボキシフェニル)ホスホン酸、ビス(4−カルボキシフェニル)ホスホン酸、ビス(2,3−ジカルボキシフェニル)ホスホン酸、ビス(2,4−ジカルボキシフェニル)ホスホン酸、ビス(2,5−ジカルボキシフェニル)ホスホン酸、ビス(2,6−ジカルボキシフェニル)ホスホン酸、ビス(3,4−ジカルボキシフェニル)ホスホン酸、ビス(3,5−ジカルボキシフェニル)ホスホン酸、ビス(2,3,4−トリカルボキシフェニル)ホスホン酸、ビス(2,3,5−トリカルボキシフェニル)ホスホン酸、ビス(2,3,6−トリカルボキシフェニル)ホスホン酸、ビス(2,4,5−トリカルボキシフェニル)ホスホン酸、ビス(2,4,6−トリカルボキシフェニル)ホスホン酸等を挙げることができ、特に成形体の塗料、糊剤の塗布性や、接着性に優れた性能を示す点からフェニルホスホン酸、2,5−ジカルボキシフェニルホスホン酸、ジフェニルホスホン酸を用いることが好ましい。これらのリン化合物は成形体からの環状ダイマーのブリードアウトを低減するという要因以外にも、ポリマーと塗料や糊剤との親和性を改良するという要因も有しているものと考えられる。
【0022】
一般式(I)で表されるリン化合物の添加量は、金属化合物触媒に対してリン原子と金属原子とのグラム原子比(P/M)が0.1〜10の範囲であるように添加し含有させることが必要であり、(P/M)が0.1より小さいと本発明の効果は認められない一方、(P/M)を10より大きくしてもそれ以上の効果は得られず不経済である。(P/M)が0.1〜10の範囲にある場合、リン化合物の添加量が多いほど成形体表面からの環状ダイマーのブリードアウトが低減される傾向があるが、性能とコストの面からより好ましい(P/M)の範囲は0.15〜8であり、さらに好ましい(P/M)の範囲は0.2〜5であり、最も好ましい(P/M)の範囲は0.25〜3である。
【0023】
一般式(I)で表されるリン化合物の添加方法は溶融重合又は、溶融重合及び固相重合により製造された、ポリマー1kg当たりの水酸基末端濃度が0.05〜0.09molの範囲であって一旦冷却固化しペレット等に賦形されたポリマーを、溶融押出や溶融成形等の溶融後加工処理時に、ポリマーを再度溶融可塑化する段階において添加し溶融混合することも可能である。しかしながら本発明の効果を最大に発揮するには、溶融重合によってポリトリメチレンテレフタレートを製造する際、重縮合反応の進行に伴う水酸基末端濃度の減少により、ポリマー1kg当たりの水酸基末端濃度が0.19mol以下から0.02mol以上の範囲にある任意の段階で、ポリマーを冷却固化しペレット等に賦形する以前の溶融状態のままで、一般式(I)で表されるリン化合物を重合系中に添加し溶融混合する方法がより好ましい。また、この方法によればリン化合物を添加した後、そのまま溶融重合又は、溶融重合及び固相重合を継続してさらに高分子量のポリトリメチレンテレフタレートを製造することも可能である。
【0024】
また、一般式(I)で表されるリン化合物の添加時の形態には特に制限はなく、例えばリン化合物を直接溶融状態、固体状態で、または任意の媒体の溶液状態、分散状態で、あるいはリン化合物を高濃度含有する、いわゆるマスターポリマー(マスターバッチ)として重合装置内に添加する方法や、ポリトリメチレンテレフタレートを溶融状態、固体状態、溶液状態、分散状態として、この中にリン化合物を直接溶融状態、固体状態で、または任意の媒体の溶液状態、分散状態で、注入、投入、含浸し次いで溶融混合する方法などが挙げられる。添加は一度に行ってもよいし、2回以上に分割して行ってもよい。
本発明のポリトリメチレンテレフタレート樹脂組成物を製造する際、必要に応じて各種の添加剤、例えば熱安定剤、消泡剤、整色剤、難燃剤、酸化防止剤、紫外線吸収剤、赤外線吸収剤、結晶核剤、滑剤、帯電防止剤、蛍光増白剤、例えば酸化チタン等の艶消し剤などを共重合、または混合してもよい。
【0025】
【発明の実施の形態】
以下、実施例を挙げて本発明をより詳細に説明するが、本発明は実施例などにより何ら限定されるものではない。尚,実施例中の主な測定値は以下の方法で測定した。
(1)極限粘度
極限粘度[η]は、オストワルド粘度管を用い、35℃、o−クロロフェノールを用いて比粘度ηspと濃度C(g/100ml)の比ηsp/Cを濃度ゼロに外挿し、以下の式に従って求めた。
[η]=lim(ηsp/C) C→0
【0026】
(2)水酸基末端濃度
ポリマー2mgをHFIP−d2/CDCl3(容量比1:1)0.5gに溶解して1HNMR(400MHz)で測定した、ポリマー末端の水酸基に対してα位置にあるプロトンと、芳香族環のプロトンのピーク積分値から算出した。
(3)ポリマー中の種々の金属、P量
ポリマーの所定量を塩酸と硝酸の混酸で分解し、内部標準としてイットリウム溶液を添加し定容とした後、JIS G1258に基づき誘導結合プラズマ発光分光法を用いてポリマー中の金属、P量を測定した。
【0027】
(4)溶融熱安定性
ポリマーを直径15cmのステンレスカップに入れて、窒素パージされた電気炉中で、270℃で1時間溶融する。これを氷浴で急冷後、真空乾燥機中で150℃で1時間かけて結晶化したときのポリマーの色調を目視で判定した。
(5)環状ダイマーの含有量
試料0.3gをクロロホルム5mlと(CF3)2CHOH5mlの混合物に溶解させた後、更にクロロホルム5mlを加え、その後アセトニトリルを約80ml加えた。このとき析出した不溶物をろ別し、溶液をすべて集めた。この溶液にアセトニトリルを添加し、200mlの溶液とした。この溶液を高速液体クロマトグラフィーを用いて分析し、環状オリゴマー量を測定した。カラムはμBond asphere 15μ C−18−100A 3.9×190mm(ウオータース社製)を用い、検出器として紫外線242nmの波長を用いた。温度は45℃、流量は1.5ml/minである。
【0028】
(6)塗膜接着性
試料を縦10cm、横10cm、厚み3mmの金型を用いて、260℃に加熱したホットプレスにより、平板状に成形した(溶融時間5分、成形時間5分、70℃冷却時間30分)。この成形体を100℃の温風乾燥機で48時間加熱処理した後、20℃、50%RHの条件下で24時間保持した。これにクリアコート剤(オリジン電気(株)製、プラネットPH−4)を塗工し、120℃で乾燥して20℃、50%RHの条件下で24時間保持した。この塗膜部にカミソリの刃で、1mm間隔で10個×10個の碁盤目状の切れ込みを入れた上からセロハンテープを貼り付けて一気に剥がしたときに剥離せずに残った個数を数えた。
【0029】
【実施例1】
テレフタル酸ジメチル3900g(20.1モル)、1,3−プロパンジオール3420g(45モル)、チタンテトラブトキシド2.34gを板状の撹拌羽根を備えた10Lのオートクレーブに仕込み、220℃でメタノールを留去しながらエステル交換反応を行った。エステル交換反応率は95%であった。エステル交換反応終了後、次いで触媒としてチタンテトラブトキシド1.56g、熱安定剤としてトリメチルホスフェート1.95gを添加し、30分撹拌後、1,3−プロパンジオールを留去しながら0.2torrの真空度で260℃、4時間重縮合反応を行った。ここでオートクレーブのサンプリング口から約2gのポリマーをサンプリングし、次いでフェニルホスホン酸4.0gをオートクレーブ内に添加し、さらに0.2torrの真空度で260℃、30分間重縮合反応を継続した。反応後、得られたポリマーを反応釜底部からロープ状に押出し、切断してペレットを得た。得られたペレットは極限粘度0.82dl/gであり、グラム原子比(P/Ti)は2.61であり、環状ダイマー含有率は2.62%であった。また途中サンプリングしたポリマーの極限粘度は0.71dl/gであり、ポリマー1kg当たりの水酸基末端濃度は0.12molであった。
【0030】
得られたペレットの溶融熱安定性を評価したところ、ポリマーの表面は、ほとんど黄変が認められなかった。
また、得られたペレットを粒径300μm以下に粉砕したパウダー2.71gを、窒素雰囲気下、260℃に温度調節された内径が10cmであり、蓋部が流水によって冷却された円筒状のオートクレーブの底部に均等に敷きつめて溶融した後、直ちに真空度を0.2Torrとして、30分間かけて環状ダイマーを強制的に昇華させた。処理後、オートクレーブの蓋部に析出した環状ダイマーを回収して秤量したところ62mgであった。一方、処理後のポリマーの環状ダイマー含有率は0.32%に低減していた。
また、得られたペレットを成形し、塗膜接着性を評価したところ97/100であった。
【0031】
【比較例1】
実施例1と同じ条件で4時間重縮合反応を行いサンプリングした後、フェニルホスホン酸を添加せずにさらに0.2torrの真空度で260℃、30分間重縮合反応を継続した。反応後、得られたポリマーを反応釜底部からロープ状に押出し、切断してペレットを得た。得られたペレットは極限粘度0.84dl/gであり、環状ダイマー含有率は2.64%であった。また途中サンプリングしたポリマーの極限粘度は0.70dl/gであり、ポリマー1kg当たりの水酸基末端濃度は0.12molであった。
得られたペレットの溶融熱安定性を評価したところ、ポリマーの表面には濃褐色の異物の生成が認められた。
【0032】
また、得られたペレットを粒径300μm以下に粉砕したパウダー2.71gを、窒素雰囲気下、260℃に温度調節された内径が10cmであり、蓋部が流水によって冷却された円筒状のオートクレーブの底部に均等に敷きつめて溶融した後、直ちに真空度を0.2Torrとして、30分間かけて環状ダイマーを強制的に昇華させた。処理後、オートクレーブの蓋部に析出した環状ダイマーを回収して秤量したところ202mgであった。一方、処理後のポリマーの環状ダイマー含有率は1.96%に低減していた。
また、得られたペレットを成形し、塗膜接着性を評価したところ66/100であり、剥離部を光学顕微鏡観察したところ、部分的に針状結晶の析出が認められた。
【0033】
【実施例2】
実施例1と同じ条件で2時間重縮合反応を行いサンプリングし、次いでフェニルホスホン酸4.0gをオートクレーブ内に添加し、さらに0.2torrの真空度で260℃、2時間重縮合反応を継続した。反応後、得られたポリマーを反応釜底部からロープ状に押出し、切断してペレットを得た。得られたペレットは極限粘度0.78dl/gであり、グラム原子比(P/Ti)は2.59であり、環状ダイマー含有率は2.52%であった。また途中サンプリングしたポリマーの極限粘度は0.52dl/gであり、ポリマー1kg当たりの水酸基末端濃度は0.18molであった。
得られたペレットの溶融熱安定性を評価したところ、ポリマーの表面は、ほとんど黄変が認められなかった。
【0034】
また、得られたペレットを粒径300μm以下に粉砕したパウダー2.71gを、窒素雰囲気下、260℃に温度調節された内径が10cmであり、蓋部が流水によって冷却された円筒状のオートクレーブの底部に均等に敷きつめて溶融した後、直ちに真空度を0.2Torrとして、30分間かけて環状ダイマーを強制的に昇華させた。処理後、オートクレーブの蓋部に析出した環状ダイマーを回収して秤量したところ61mgであった。一方、処理後のポリマーの環状ダイマー含有率は0.35%に低減していた。
また、得られたペレットを成形し、塗膜接着性を評価したところ96/100であった。
【0035】
【比較例2】
実施例1と同じ条件で2時間重縮合反応を行いサンプリングした後、フェニルホスホン酸を添加せずに、さらに0.2torrの真空度で260℃、2時間重縮合反応を継続した。反応後、得られたポリマーを反応釜底部からロープ状に押出し、切断してペレットを得た。得られたペレットは極限粘度0.85dl/gであり、環状ダイマー含有率は2.62%であった。また途中サンプリングしたポリマーの極限粘度は0.51dl/gであり、ポリマー1kg当たりの水酸基末端濃度は0.18molであった。
得られたペレットの溶融熱安定性を評価したところ、ポリマーの表面には褐色の異物の生成が認められた。
【0036】
また、得られたペレットを粒径300μm以下に粉砕したパウダー2.71gを、窒素雰囲気下、260℃に温度調節された内径が10cmであり、蓋部が流水によって冷却された円筒状のオートクレーブの底部に均等に敷きつめて溶融した後、直ちに真空度を0.2Torrとして、30分間かけて環状ダイマーを強制的に昇華させた。処理後、オートクレーブの蓋部に析出した環状ダイマーを回収して秤量したところ210mgであった。一方、処理後のポリマーの環状ダイマー含有率は1.88%に低減していた。
また、得られたペレットを成形し、塗膜接着性を評価したところ69/100であった。
【0037】
【比較例3】
実施例1と同じ条件で1時間重縮合反応を行いサンプリングし、次いでフェニルホスホン酸4.0gをオートクレーブ内に添加し、さらに継続の重縮合反応を0.2torrの真空度で260℃で、反応度の参考として撹拌羽根に取り付けたトルクメーターの読み取り値が上昇しないため、6時間まで延長して実施した。反応後、得られたポリマーを反応釜底部からロープ状に押出し、切断してペレットを得た。得られたペレットは極限粘度0.48dl/gであり、グラム原子比(P/Ti)は2.58であり、環状ダイマー含有率は2.98%であった。また途中サンプリングしたポリマーの極限粘度は0.21dl/gであり、ポリマー1kg当たりの水酸基末端濃度は0.36molであった。
得られたペレットの溶融熱安定性を評価したところ、ポリマーの表面にはわずかな黄変が認められた。
【0038】
また、得られたペレットを粒径300μm以下に粉砕したパウダー2.71gを、窒素雰囲気下、260℃に温度調節された内径が10cmであり、蓋部が流水によって冷却された円筒状のオートクレーブの底部に均等に敷きつめて溶融した後、直ちに真空度を0.2Torrとして、30分間かけて環状ダイマーを強制的に昇華させた。処理後、オートクレーブの蓋部に析出した環状ダイマーを回収して秤量したところ269mgであった。一方、処理後のポリマーの環状ダイマー含有率は2.18%に低減していた。
また、得られたペレットを成形し、塗膜接着性を評価したところ43/100であった。
【0039】
【実施例3】
実施例1と同じ条件で4.5時間重縮合反応を行いサンプリングし、次いでフェニルホスホン酸4.0gをオートクレーブ内に添加し、さらに0.2torrの真空度で260℃、30分間重縮合反応を継続した。反応後、得られたポリマーを反応釜底部からロープ状に押出し、切断してペレットを得た。得られたペレットは極限粘度1.00dl/gであり、グラム原子比(P/Ti)は2.60であり、環状ダイマー含有率は2.61%であった。また途中サンプリングしたポリマーの極限粘度は0.86dl/gであり、ポリマー1kg当たりの水酸基末端濃度は0.03molであった。
得られたペレットの溶融熱安定性を評価したところ、ポリマーの表面は、ほとんど黄変が認められなかった。
【0040】
また、得られたペレットを粒径300μm以下に粉砕したパウダー2.71gを、窒素雰囲気下、260℃に温度調節された内径が10cmであり、蓋部が流水によって冷却された円筒状のオートクレーブの底部に均等に敷きつめて溶融した後、直ちに真空度を0.2Torrとして、30分間かけて環状ダイマーを強制的に昇華させた。処理後、オートクレーブの蓋部に析出した環状ダイマーを回収して秤量したところ61mgであった。一方、処理後のポリマーの環状ダイマー含有率は0.29%に低減していた。
また、得られたペレットを成形し、塗膜接着性を評価したところ98/100であった。
【0041】
【比較例4】
実施例1と同じ条件で5時間重縮合反応を行いサンプリングし、次いでフェニルホスホン酸4.0gをオートクレーブ内に添加し、さらに0.2torrの真空度で260℃、30分間重縮合反応を継続した。反応後、得られたポリマーを反応釜底部からロープ状に押出し、切断してペレットを得た。得られたペレットは極限粘度1.10dl/gであり、グラム原子比(P/Ti)は2.60であり、環状ダイマー含有率は2.62%であった。また途中サンプリングしたポリマーの極限粘度は0.93dl/gであり、ポリマー1kg当たりの水酸基末端濃度は0.01molであった。
得られたペレットの溶融熱安定性を評価したところ、ポリマーの表面には褐色の異物の生成が認められた。
【0042】
また、得られたペレットを粒径300μm以下に粉砕したパウダー2.71gを、窒素雰囲気下、260℃に温度調節された内径が10cmであり、蓋部が流水によって冷却された円筒状のオートクレーブの底部に均等に敷きつめて溶融した後、直ちに真空度を0.2Torrとして、30分間かけて環状ダイマーを強制的に昇華させた。処理後、オートクレーブの蓋部に析出した環状ダイマーを回収して秤量したところ219mgであった。一方、処理後のポリマーの環状ダイマー含有率は1.78%に低減していた。
また、得られたペレットを成形し、塗膜接着性を評価したところ69/100であった。
【0043】
【実施例4】
比較例1で得られた極限粘度が0.84dl/gであり、環状ダイマー含有率が2.64%であるポリマーにフェニルホスホン酸を0.20重量%添着混合した。これを、スクリュー径が30mmφ、L/D=50.9の、2つの減圧ゾーンを設けたベント付き二軸押出機を用いて、スクリュー回転数100rpm、樹脂温度260℃、2つの減圧ゾーンの真空度をそれぞれ30torrとして、5kg/hrのフィード量でロープ状に押出し、切断してペレットを得た。ペレットの極限粘度は0.82dl/gであり、グラム原子比(P/Ti)は3.22であり、環状ダイマー含有率は2.42%であった。
得られたペレットの溶融熱安定性を評価したところ、ポリマーの表面は、ほとんど黄変が認められなかった。
【0044】
また、得られたペレットを粒径300μm以下に粉砕したパウダー2.71gを、窒素雰囲気下、260℃に温度調節された内径が10cmであり、蓋部が流水によって冷却された円筒状のオートクレーブの底部に均等に敷きつめて溶融した後、直ちに真空度を0.2Torrとして、30分間かけて環状ダイマーを強制的に昇華させた。処理後、オートクレーブの蓋部に析出した環状ダイマーを回収して秤量したところ60mgであった。一方、処理後のポリマーの環状ダイマー含有率は0.34%に低減していた。
また、得られたペレットを成形し、塗膜接着性を評価したところ97/100であった。
【0045】
【実施例5】
フェニルホスホン酸の添加量を10gに変更した以外、実施例1と同じ方法でポリマーの溶融熱安定性及び環状ダイマーの析出挙動を評価した。得られたペレットは極限粘度0.78dl/gであり、グラム原子比(P/Ti)は6.51であり、環状ダイマー含有率は2.58%であった。
得られたペレットの溶融熱安定性を評価したところ、ポリマーの表面は、ほとんど黄変が認められなかった。
また、得られたペレットを粒径300μm以下に粉砕したパウダー2.71gを、窒素雰囲気下、260℃に温度調節された内径が10cmであり、蓋部が流水によって冷却された円筒状のオートクレーブの底部に均等に敷きつめて溶融した後、直ちに真空度を0.2Torrとして、30分間かけて環状ダイマーを強制的に昇華させた。処理後、オートクレーブの蓋部に析出した環状ダイマーを回収して秤量したところ61mgであった。一方、処理後のポリマーの環状ダイマー含有率は0.32%に低減していた。
また、得られたペレットを成形し、塗膜接着性を評価したところ99/100であった。
【0046】
【実施例6】
フェニルホスホン酸の添加量を1gに変更した以外、実施例1と同じ方法でポリマーの溶融熱安定性及び環状ダイマーの析出挙動を評価した。得られたペレットは極限粘度0.84dl/gであり、グラム原子比(P/Ti)は0.65であり、環状ダイマー含有率は2.62%であった。
得られたペレットの溶融熱安定性を評価したところ、ポリマーの表面は、ほとんど黄変が認められなかった。
また、得られたペレットを粒径300μm以下に粉砕したパウダー2.71gを、窒素雰囲気下、260℃に温度調節された内径が10cmであり、蓋部が流水によって冷却された円筒状のオートクレーブの底部に均等に敷きつめて溶融した後、直ちに真空度を0.2Torrとして、30分間かけて環状ダイマーを強制的に昇華させた。処理後、オートクレーブの蓋部に析出した環状ダイマーを回収して秤量したところ62mgであった。一方、処理後のポリマーの環状ダイマー含有率は0.33%に低減していた。
また、得られたペレットを成形し、塗膜接着性を評価したところ95/100であった。
【0047】
【比較例5】
フェニルホスホン酸の添加量を0.13gに変更した以外、実施例1と同じ方法でポリマーの溶融熱安定性及び環状ダイマーの析出挙動を評価した。得られたペレットは極限粘度0.84dl/gであり、グラム原子比(P/Ti)は0.08であり、環状ダイマー含有率は2.64%であった。
得られたペレットの溶融熱安定性を評価したところ、ポリマーの表面には濃褐色の異物の生成が認められた。
また、得られたペレットを粒径300μm以下に粉砕したパウダー2.71gを、窒素雰囲気下、260℃に温度調節された内径が10cmであり、蓋部が流水によって冷却された円筒状のオートクレーブの底部に均等に敷きつめて溶融した後、直ちに真空度を0.2Torrとして、30分間かけて環状ダイマーを強制的に昇華させた。処理後、オートクレーブの蓋部に析出した環状ダイマーを回収して秤量したところ199mgであった。一方、処理後のポリマーの環状ダイマー含有率は1.81%に低減していた。
また、得られたペレットを成形し、塗膜接着性を評価したところ68/100であった。
【0048】
【実施例7】
実施例1で得られたペレットを205℃、窒素気流下で30時間固相重合を行って、極限粘度0.92dl/g、グラム原子比(P/Ti)は2.60であり、環状ダイマー含有率1.12%のペレットを得た。
得られたペレットの溶融熱安定性を評価したところ、ポリマーの表面は、ほとんど黄変が認められなかった。
また、得られたペレットを粒径300μm以下に粉砕したパウダー2.71gを、窒素雰囲気下、260℃に温度調節された内径が10cmであり、蓋部が流水によって冷却された円筒状のオートクレーブの底部に均等に敷きつめて溶融した後、直ちに真空度を0.2Torrとして、30分間かけて環状ダイマーを強制的に昇華させた。処理後、オートクレーブの蓋部に析出した環状ダイマーを回収して秤量したところ21mgであった。一方、処理後のポリマーの環状ダイマー含有率は0.31%に低減していた。
また、得られたペレットを成形し、塗膜接着性を評価したところ97/100であった。
【0049】
【実施例8】
フェニルホスホン酸4.0gの代わりに、ジフェニルホスホン酸を4.0g添加した以外、実施例1と同じ方法で重合を行った。反応後、得られたポリマーを反応釜底部からロープ状に押出し、切断してペレットを得た。得られたペレットは極限粘度0.83dl/gであり、グラム原子比(P/Ti)は1.87であり、環状ダイマー含有率は2.63%であった。また途中サンプリングしたポリマーの極限粘度は0.71dl/gであり、ポリマー1kg当たりの水酸基末端濃度は0.11molであった。
得られたペレットの溶融熱安定性を評価したところ、ポリマーの表面は、ほとんど黄変が認められなかった。
また、得られたペレットを粒径300μm以下に粉砕したパウダー2.71gを、窒素雰囲気下、260℃に温度調節された内径が10cmであり、蓋部が流水によって冷却された円筒状のオートクレーブの底部に均等に敷きつめて溶融した後、直ちに真空度を0.2Torrとして、30分間かけて環状ダイマーを強制的に昇華させた。処理後、オートクレーブの蓋部に析出した環状ダイマーを回収して秤量したところ65mgであった。一方、処理後のポリマーの環状ダイマー含有率は0.30%に低減していた。
また、得られたペレットを成形し、塗膜接着性を評価したところ98/100であった。
【0050】
【実施例9】
チタンテトラブトキシド2.34g及び1.56gの代わりに、2−エチルヘキサン酸スズをそれぞれ2.78g及び1.85g添加した以外、実施例1と同じ方法で重合を行った。反応後、得られたポリマーを反応釜底部からロープ状に押出し、切断してペレットを得た。得られたペレットは極限粘度0.89dl/gであり、グラム原子比(P/Sn)は2.62であり、環状ダイマー含有率は2.43%であった。また途中サンプリングしたポリマーの極限粘度は0.78dl/gであり、ポリマー1kg当たりの水酸基末端濃度は0.10molであった。
得られたペレットの溶融熱安定性を評価したところ、ポリマーの表面は、ほとんど黄変が認められなかった。
【0051】
また、得られたペレットを粒径300μm以下に粉砕したパウダー2.71gを、窒素雰囲気下、260℃に温度調節された内径が10cmであり、蓋部が流水によって冷却された円筒状のオートクレーブの底部に均等に敷きつめて溶融した後、直ちに真空度を0.2Torrとして、30分間かけて環状ダイマーを強制的に昇華させた。処理後、オートクレーブの蓋部に析出した環状ダイマーを回収して秤量したところ58mgであった。一方、処理後のポリマーの環状ダイマー含有率は0.30%に低減していた。
また、得られたペレットを成形し、塗膜接着性を評価したところ98/100であった。
【0052】
【発明の効果】
本発明は、溶融熱安定性に優れるとともに、溶融滞留時の環状ダイマーの生成及び析出が少なく成形性に優れる上、その成形体が塗料、糊剤の塗布性や、接着性にも優れていることを特徴とするポリトリメチレンテレフタレート樹脂組成物を提供する。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a polytrimethylene terephthalate resin composition and a method for producing the same. More specifically, it has excellent melting heat stability, less formation and precipitation of cyclic dimers during production and post-melt processing, and excellent moldability, and the molded product has excellent paint and paste applicability and adhesiveness. The present invention relates to a polytrimethylene terephthalate resin composition.
[0002]
[Prior art]
Polyesters, particularly polyethylene terephthalate, have excellent physical and chemical properties and are widely used as fibers, films, and other molded articles, but lack flexibility. On the other hand, it is synthesized by melt polymerization of terephthalic acid or a lower alcohol ester of terephthalic acid and 1,3-propanediol (also called trimethylene glycol), or by further solid-phase polymerization of a prepolymer obtained by once melt polymerization. Polytrimethylene terephthalate is a material with excellent flexibility, and has many characteristics that cannot be obtained with existing materials, such as glass transition temperature and melting point close to those of nylon 6 and little influence on physical properties due to moisture absorption. Have both.
[0003]
In the production of polytrimethylene terephthalate, a catalyst is required to smoothly advance the polycondensation reaction, and various metal compounds, particularly organic titanium compounds, are widely used as catalysts. However, if a polymer produced by using these metal compounds as a catalyst is retained in a molten state for a long time, there is a problem that the polymer is thermally deteriorated and the molecular weight is lowered or the color tone is deteriorated. Furthermore, there is a problem that oligomers are generated during melt residence. About 90% by weight of the oligomer is a cyclic dimer. However, since the cyclic dimer has sublimation and bleed-out properties, for example, in injection molding, it deposits on a molding die to form a mold deposit, and the appearance and dimensional accuracy of the molded product And even after the molded body is produced, the cyclic dimer bleeds out on the surface, which impairs the applicability and adhesion of paints and pastes.
[0004]
The problem of thermal degradation during the melt residence of the polymer is more serious in polytrimethylene terephthalate because the degree of deterioration in color tone and the rate of decrease in melt viscosity are larger than in polyethylene terephthalate having a similar skeleton. . As for oligomers, polyethylene terephthalate is present in an amount of about 1% by weight, whereas polytrimethylene terephthalate is about 2.5 to 3.5% by weight. In polyethylene terephthalate, this oligomer is a cyclic trimer. However, since the molecular weight is higher than that of the cyclic trimer of polytrimethylene terephthalate, sublimation and bleed-out properties are small. Therefore, the degree of problem is more severe with polytrimethylene terephthalate.
[0005]
As an attempt to improve the melt heat stability of polytrimethylene terephthalate, a method has been proposed in which a reaction product obtained by reacting a specific titanium compound with a phosphorus compound in advance is used as a catalyst (see, for example, Patent Document 1). .) However, if the reaction product obtained by previously reacting a titanium compound and a phosphorus compound as in this patent document is used as a catalyst, the color tone of the polymer is improved, but the polymerization rate is greatly reduced. In addition, it is necessary to use in combination with calcium acetate, or a large amount of catalyst must be used. In addition, it takes a long time to polymerize, the productivity is reduced, and it is difficult to produce a polymer with a high degree of polymerization sufficient for practical use, and the coating property and adhesive property of the molded product and the adhesiveness are reproducible. It was also difficult to evaluate.
[0006]
[Patent Document 1]
JP 2001-278971 A
[0007]
[Problems to be solved by the invention]
The object of the present invention is to solve the above-mentioned problems, excellent in heat stability of the melt, and less in the formation and precipitation of cyclic dimer at the time of melt residence and excellent in moldability. Another object of the present invention is to provide a polytrimethylene terephthalate resin composition characterized by excellent adhesion.
[0008]
[Means for Solving the Problems]
In order to solve these problems, the present inventors analyzed in detail the thermal degradation behavior of polytrimethylene terephthalate and the formation behavior of cyclic dimer, and as a result, the thermal degradation of the polymer is related to the hydroxyl group concentration. It has been found that when the hydroxyl group terminal concentration is reduced to less than 0.02 mol per kg of the polymer, thermal deterioration such as deterioration of color progresses rapidly. There is a possibility that thermal degradation has been promoted by the change in the coordination state of the metal compound catalyst as the hydroxyl group terminal concentration decreases. As a result of intensive investigations on the technology for preventing thermal degradation caused by metal compound catalysts, we have found that a polymer having an intrinsic viscosity of 0.5 dl / g or more with a hydroxyl group terminal concentration ranging from 0.02 to 0.19 mol per kg of polymer. A specific phosphorus compound represented by the general formula (1) is added to trimethylene terephthalate in a gram atomic ratio (P / M) of phosphorus atom to metal atom with respect to the metal compound catalyst in the range of 0.1 to 10. It has been found that thermal degradation can be greatly reduced by melt-mixing. Furthermore, it has been found that the polytrimethylene terephthalate resin composition produced in this way has little precipitation of cyclic dimer during melt residence. As a result of further detailed investigation, the amount of cyclic dimer generated during melt residence has been greatly reduced, and the specific phosphorus compound represented by the general formula (1) is coordinated to the metal compound catalyst. It is considered that the formation reaction of the cyclic dimer was inhibited. The polytrimethylene terephthalate resin composition of the present invention has little bleeding out of the cyclic dimer to the surface of the molded body, and has found that the coating property of the molded body, the applicability of the adhesive and the adhesiveness are greatly improved. The invention has been reached.
[0009]
That is, the present invention
(1) Intrinsic viscosity produced in the presence of a metal compound catalyst, wherein 80% by weight or more of the repeating units are composed of trimethylene terephthalate units, and the hydroxyl group terminal concentration per kg of the polymer is in the range of 0.02 to 0.19 mol. A polytrimethylene terephthalate resin having a valence of 0.5 dl / g or more and a phosphorus compound represented by the following general formula (I) is converted into a gram atom ratio (P / M) of phosphorus atom to metal atom with respect to the metal compound catalyst. A polytrimethylene terephthalate resin composition obtained by melt mixing so that is in the range of 0.1 to 10,
(R) m PO (OH) 3-m (I)
(R is a phenyl group or a phenyl group having a carboxyl group, and m is 1 to 2)
[0010]
(2) A polytrimethylene terephthalate resin composition having an intrinsic viscosity of 0.5 dl / g or more, wherein 80% by weight or more of the repeating units are made of trimethylene terephthalate units, which is produced in the presence of a metal compound catalyst. It is represented by the general formula (I) in the polymerization apparatus at any stage where the hydroxyl end concentration per kg of the polymer is in the range of 0.19 mol or less to 0.02 mol or more due to the decrease of the hydroxyl end concentration with the progress of the reaction. Polytrimethylene, characterized in that a phosphorus compound is added to a metal compound catalyst so that the gram atomic ratio (P / M) of phosphorus atom to metal atom is in the range of 0.1-10. The present invention relates to a method for producing a terephthalate resin composition.
[0011]
The polytrimethylene terephthalate constituting the polytrimethylene terephthalate resin composition of the present invention was produced in the presence of a metal compound catalyst, and the hydroxyl group terminal concentration per 1 kg of polymer in which 80% by weight or more of the repeating units consisted of trimethylene terephthalate units. Is a polytrimethylene terephthalate having an intrinsic viscosity of 0.5 dl / g or more.
When the intrinsic viscosity is less than 0.5 dl / g, the strength of the molded product is low. The upper limit of the intrinsic viscosity is not particularly limited. However, when it exceeds 2 dl / g, the melt viscosity is too high, making the molding process difficult. Therefore, it is preferably 0.7 to 1.5 dl / g, particularly preferably. It is 0.8-1.4 dl / g, Most preferably, it is 0.85-1.3 dl / g.
[0012]
As a raw material monomer for forming the main skeleton of polytrimethylene terephthalate of the present invention, in addition to terephthalic acid and 1,3-propanediol, other monomers may be copolymerized with less than 20% by weight of repeating units. The monomer to be copolymerized is not particularly limited, such as diol, dicarboxylic acid, dicarboxylic acid ester, dicarboxylic acid amide, and oxycarboxylic acid. Specific examples include diols such as ethylene glycol, 1,2-propanediol, 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol, 1,4-cyclohexanedimethanol, oxalic acid, and malon. Acid, succinic acid, glutaric acid, adipic acid, isophthalic acid, 2,6-naphthalenedicarboxylic acid, biphenyldicarboxylic acid, 5-sodium sulfoisophthalic acid, 5-potassium sulfoisophthalic acid, 5-lithium sulfoisophthalic acid, 2-sodium Sulfoisophthalic acid, 2-potassium sulfoisophthalic acid, 2-lithium sulfoisophthalic acid, 4-sodium sulfo-2,6-naphthalenedicarboxylic acid, 2-sodium sulfo-4-hydroxybenzoic acid, tetrabutylphosphonium 5-sulfoisophthalate Dicarboxylic acid such as Even lower alcohol esters such as methanol, oxycarboxylic acids such as oxyacetic acid and oxybenzoic acid and lower alcohol esters such as methanol, and polyols such as polyethylene glycol and polytetramethylene glycol having a molecular weight of 200 to 100,000. Good. Further, if necessary, two or more kinds of ester-forming monomers may be copolymerized.
[0013]
Further, a copolymer component generated in the polymerization process, for example, a dimer (bis (3-hydroxypropyl) ether) of 1,3-propanediol may be copolymerized. Bis (3-hydroxypropyl) ether is produced by reacting 1,3-propanediol and the 3-hydroxypropyl group at the polymer molecule end with 1,3-propanediol during the polymerization process, and directly into polytrimethylene terephthalate. Copolymerization reduces the light resistance and heat resistance of polytrimethylene terephthalate, but when moderately copolymerized, it also has the effect of increasing the dye exhaust rate and spinning stability of the fiber. Therefore, it is preferable that bis (3-hydroxypropyl) ether is appropriately copolymerized, and the copolymerization ratio is 0.01 to 2% by weight, preferably 0.04 to 1.2% by weight.
[0014]
A preferred method for producing the polytrimethylene terephthalate resin composition of the present invention is to react terephthalic acid and / or its lower alcohol ester with 1,3-propanediol to produce 1,3-propanediol ester of terephthalic acid and / or its This is a method of producing an oligomer and polycondensing it. The terephthalic acid, lower alcohol ester of terephthalic acid, and 1,3-propanediol used in the present invention may be commercially available, or those recovered from polytrimethylene terephthalate or polytrimethylene terephthalate products, and preferably have a purity of 95% More preferably, it is 98% or more.
The charging ratio of 1,3-propanediol to terephthalic acid as a polymerization raw material or lower alcohol ester of terephthalic acid is preferably 0.8 to 3 in terms of molar ratio. When the feed ratio is less than 0.8, the transesterification reaction does not proceed easily. When the feed ratio is greater than 3, the melting point is lowered and the whiteness of the obtained polymer tends to decrease. Preferably, it is 1.4-2.5, More preferably, it is 1.5-2.3.
[0015]
The catalyst is necessary to facilitate the reaction. In the esterification reaction or transesterification reaction, for example, magnesium, calcium, barium, scandium, yttrium, titanium, zirconium, hafnium, manganese, iron, cobalt, nickel, copper, zinc , Cadmium, aluminum, germanium, tin, lead, antimony, lanthanum, cerium, samarium, ytterbium, etc., sodium methylate, magnesium methylate, aluminum isopropoxide, zinc glycoxide, zinc phenoxide, titanium tetrabutoxide, titanium tetra Alkoxides represented by isopropoxide. And the above metals, represented by lithium acetate, calcium acetate, magnesium acetate, manganese acetate, zinc acetate, zinc butyrate, tin acetate, tin octylate, tin 2-ethylhexanoate, lead acetate, antimony acetate, titanium oxalate Carboxylate. And carbonates represented by the above metals, such as calcium carbonate and zinc carbonate. And oxides typified by antimony oxide, germanium oxide, lead oxide, tin oxide, amorphous titanium oxide precipitate, amorphous titanium oxide / silica coprecipitate, and amorphous zirconia precipitate. And halides typified by zinc chloride, zinc iodide, tin chloride, lanthanum chloride, and samarium chloride. And sulfates represented by zinc sulfate and lead sulfate of the above metals. And the phosphate of the said metal represented by the zinc phosphate. And organotin compounds represented by monobutyltin oxide, dibutyltin oxide, monobutyltin trioctyl ester, dibutyltin diacetate, dibutyltin dilaurate, and stannoxane. One or more selected from the above catalysts is used in an amount of 0.01 to 0.2% by weight, preferably 0.05 to 0.12% by weight, based on the total carboxylic acid component monomer. It is preferable because it has thermal stability.
[0016]
The reaction temperature is about 200 ° C. to 250 ° C., and the reaction can be carried out while distilling off by-produced alcohol such as water and methanol. The reaction time is usually 2 to 10 hours, preferably 2 to 4 hours. The reaction product thus obtained is 1,3-propanediol ester of terephthalic acid and / or its oligomer. The above esterification reaction and transesterification reaction may be carried out successively in succession in two or more reaction kettles as required.
The polytrimethylene terephthalate resin composition can be produced by further polycondensing the terephthalic acid 1,3-propanediol ester and / or its oligomer thus obtained.
[0017]
In the polycondensation reaction, magnesium, calcium, barium, scandium, yttrium, titanium, zirconium, hafnium, manganese, iron, cobalt, nickel, copper, zinc, cadmium, aluminum, germanium, tin, lead, antimony, Alkoxides represented by metals such as lanthanum, cerium, samarium, ytterbium, such as sodium methylate, magnesium methylate, aluminum isopropoxide, zinc glycoxide, zinc phenoxide, titanium tetrabutoxide, and titanium tetraisopropoxide. And the above metals, represented by lithium acetate, calcium acetate, magnesium acetate, manganese acetate, zinc acetate, zinc butyrate, tin acetate, tin octylate, tin 2-ethylhexanoate, lead acetate, antimony acetate, titanium oxalate Carboxylate. And carbonates represented by the above metals, such as calcium carbonate and zinc carbonate. And oxides typified by antimony oxide, germanium oxide, lead oxide, tin oxide, amorphous titanium oxide precipitate, amorphous titanium oxide / silica coprecipitate, and amorphous zirconia precipitate. And halides typified by zinc chloride, zinc iodide, tin chloride, lanthanum chloride, and samarium chloride. And sulfates represented by zinc sulfate and lead sulfate of the above metals. And the phosphate of the said metal represented by the zinc phosphate. And organotin compounds represented by monobutyltin oxide, dibutyltin oxide, monobutyltin trioctyl ester, dibutyltin diacetate, dibutyltin dilaurate, and stannoxane. One or more selected from the above catalysts is added in an amount of 0.01 to 0.2% by weight, preferably 0.03 to 0.15% by weight, based on the total carboxylic acid component monomer. As this polycondensation catalyst, the catalyst used in the esterification reaction or transesterification reaction can be used as it is, or it may be newly added. Of these catalysts, titanium-based catalysts are effective for all esterification reactions, transesterification reactions, and polycondensation reactions. It is the most preferred catalyst in that the polycondensation reaction can be carried out with a small amount without being added to the catalyst.
[0018]
In the polycondensation reaction, polycondensation may be performed under reduced pressure in order to efficiently discharge 1,3-propanediol and further water and alcohol remaining in the reaction system produced by the esterification reaction or transesterification reaction. Preferably, the degree of vacuum to be applied is 0.0001 to 2 torr, preferably 0.01 to 0.7 torr. When copolymerizing polytrimethylene terephthalate, a comonomer can be added at any stage of the polymerization.
[0019]
The present invention relates to a polytrimethylene terephthalate having a hydroxyl group terminal concentration in the range of 0.02 to 0.19 mol / kg of polymer and an intrinsic viscosity of 0.5 dl / g or more to a phosphorus represented by the general formula (I). It is necessary to add and melt-mix the compound, and it is considered that the hydroxyl group terminal existing in this concentration range acts effectively for the formation of a preferred coordination structure of the metal compound catalyst and the phosphorus compound. When the hydroxyl group terminal concentration is greater than 0.19 mol per kg of polymer, the phosphorus compound represented by the general formula (I) reacts immediately with the metal compound catalyst and aggregates to significantly reduce the catalytic activity. After that, it is difficult to produce polytrimethylene terephthalate having a high molecular weight sufficient for practical use by continuing melt polymerization or solid phase polymerization. On the other hand, when the concentration of the hydroxyl terminal is less than 0.02 mol per kg of the polymer, the degree of improvement in melt heat stability and cyclic dimer is not sufficient. When the hydroxyl group terminal concentration is less than 0.02 mol per 1 kg of polymer, aggregation of the metal compound catalysts proceeds prior to the reaction between the metal compound catalyst and the phosphorus compound, and the preferred coordination between the metal compound catalyst and the phosphorus compound. The structure may not have been formed, but it is not clear yet. Only when the hydroxyl group terminal concentration per 1 kg of the polymer is in the range of 0.02 mol to 0.19 mol, it is possible to improve the heat stability of the melt and further reduce the precipitation of the cyclic dimer during the melt residence. In addition, when the phosphorus compound represented by the general formula (I) is added under the conditions of the present invention, the activity of the metal compound catalyst is maintained. Therefore, melt polymerization or solid phase polymerization should be continued after the addition of the phosphorus compound. In addition, it is possible to produce higher molecular weight polytrimethylene terephthalate without impairing productivity.
[0020]
When the concentration of the hydroxyl terminal of polytrimethylene terephthalate when adding the phosphorus compound represented by the general formula (I) is in the range of 0.02 mol to 0.19 mol per kg of polymer, the higher the hydroxyl group terminal concentration is. While there is a tendency to improve the heat stability of melting, the lower the hydroxyl group terminal concentration, the more the cyclic dimer precipitation amount at the time of melting residence tends to decrease, and the coating property and adhesive property of the molded product and adhesiveness. There is a tendency to improve. The cause of these is not clear yet, but reducing the catalytic activity is mainly effective in improving the heat stability of the melt, improving the amount of cyclic dimer deposited, the coating properties of the molded product and paste, and the adhesion. In addition to the reduction of the catalytic activity, improvement in the polarity of the polymer by itself containing a compound having a preferred coordination structure comprising a phosphorus compound having a specific structure represented by the general formula (I) and a metal compound catalyst, etc. It is considered that multiple factors are involved. From the viewpoint of the balance of the above performance, the more preferable hydroxyl group terminal concentration of polytrimethylene terephthalate when adding the phosphorus compound represented by the general formula (I) is in the range of 0.03 to 0.16 mol per kg of the polymer. More preferably in the range of 0.04 to 0.12 mol, most preferably in the range of 0.05 to 0.09 mol.
[0021]
Examples of the compound represented by the general formula (I) include phenylphosphonic acid, methylphosphonic acid, ethylphosphonic acid, propylphosphonic acid, isopropylphosphonic acid, butylphosphonic acid, tolylphosphonic acid, xylylphosphonic acid, biphenylylphosphonic acid, Naphthylphosphonic acid, anthrylphosphonic acid, 2-carboxyphenylphosphonic acid, 3-carboxyphenylphosphonic acid, 4-carboxyphenylphosphonic acid, 2,3-dicarboxyphenylphosphonic acid, 2,4-dicarboxyphenylphosphonic acid, 2,5-dicarboxyphenylphosphonic acid, 2,6-dicarboxyphenylphosphonic acid, 3,4-dicarboxyphenylphosphonic acid, 3,5-dicarboxyphenylphosphonic acid, 2,3,4-tricarboxyphenylphosphonic acid Acid, 2,3,5-trica Boxyphenylphosphonic acid, 2,3,6-tricarboxyphenylphosphonic acid, 2,4,5-tricarboxyphenylphosphonic acid, 2,4,6-tricarboxyphenylphosphonic acid, diphenylphosphonic acid, bis (2- Carboxyphenyl) phosphonic acid, bis (3-carboxyphenyl) phosphonic acid, bis (4-carboxyphenyl) phosphonic acid, bis (2,3-dicarboxyphenyl) phosphonic acid, bis (2,4-dicarboxyphenyl) phosphonic Acid, bis (2,5-dicarboxyphenyl) phosphonic acid, bis (2,6-dicarboxyphenyl) phosphonic acid, bis (3,4-dicarboxyphenyl) phosphonic acid, bis (3,5-dicarboxyphenyl) ) Phosphonic acid, bis (2,3,4-tricarboxyphenyl) phosphonic acid, bis (2, , 5-tricarboxyphenyl) phosphonic acid, bis (2,3,6-tricarboxyphenyl) phosphonic acid, bis (2,4,5-tricarboxyphenyl) phosphonic acid, bis (2,4,6-tricarboxy) Phenyl) phosphonic acid and the like. Phenylphosphonic acid, 2,5-dicarboxyphenylphosphonic acid, diphenylphosphone are particularly preferable in terms of excellent performance in paints and adhesives for moldings and adhesive properties. It is preferable to use an acid. These phosphorus compounds are considered to have a factor of improving the affinity between the polymer and the paint or paste in addition to the factor of reducing the bleeding out of the cyclic dimer from the molded body.
[0022]
The addition amount of the phosphorus compound represented by the general formula (I) is added so that the gram atom ratio (P / M) of phosphorus atom to metal atom is in the range of 0.1 to 10 with respect to the metal compound catalyst. However, if (P / M) is less than 0.1, the effect of the present invention is not recognized. On the other hand, even if (P / M) is greater than 10, further effects can be obtained. It is uneconomical. When (P / M) is in the range of 0.1 to 10, there is a tendency that the bleedout of the cyclic dimer from the surface of the molded body tends to be reduced as the addition amount of the phosphorus compound is increased. A more preferable range of (P / M) is 0.15 to 8, a more preferable range of (P / M) is 0.2 to 5, and a most preferable range of (P / M) is 0.25 to 5. 3.
[0023]
The method for adding the phosphorus compound represented by the general formula (I) is a method in which the hydroxyl group terminal concentration per 1 kg of the polymer produced by melt polymerization or melt polymerization and solid phase polymerization is in the range of 0.05 to 0.09 mol. The polymer once cooled and solidified and shaped into pellets or the like can be added and melt-mixed at the stage of melt-plasticizing the polymer again during post-melt processing such as melt extrusion or melt molding. However, in order to maximize the effects of the present invention, when polytrimethylene terephthalate is produced by melt polymerization, the hydroxyl terminal concentration per kg of polymer is 0.19 mol due to the decrease in hydroxyl terminal concentration accompanying the progress of the polycondensation reaction. The phosphorus compound represented by the general formula (I) is put into the polymerization system in an arbitrary stage within the range of 0.02 mol or more and in the molten state before being cooled and solidified and shaped into pellets or the like. A method of adding and melt-mixing is more preferable. Further, according to this method, it is also possible to produce polytrimethylene terephthalate having a higher molecular weight by adding the phosphorus compound and then continuing the melt polymerization or the melt polymerization and the solid phase polymerization as they are.
[0024]
Further, there is no particular limitation on the form when the phosphorus compound represented by the general formula (I) is added. For example, the phosphorus compound is directly melted, in a solid state, or in a solution state, a dispersed state in an arbitrary medium, or A method of adding a high concentration of phosphorus compound as a so-called master polymer (master batch) into the polymerization apparatus, or polytrimethylene terephthalate in a molten state, a solid state, a solution state, or a dispersed state. Examples of the method include injection, charging, impregnation, and melt mixing in a molten state, a solid state, or a solution state or dispersion state of an arbitrary medium. Addition may be performed at once, or may be performed in two or more portions.
When producing the polytrimethylene terephthalate resin composition of the present invention, various additives as necessary, for example, heat stabilizers, antifoaming agents, color modifiers, flame retardants, antioxidants, ultraviolet absorbers, infrared absorbers. Agents, crystal nucleating agents, lubricants, antistatic agents, fluorescent whitening agents, for example, matting agents such as titanium oxide, and the like may be copolymerized or mixed.
[0025]
DETAILED DESCRIPTION OF THE INVENTION
EXAMPLES Hereinafter, although an Example is given and this invention is demonstrated in detail, this invention is not limited at all by an Example. The main measurement values in the examples were measured by the following methods.
(1) Intrinsic viscosity
Intrinsic viscosity [η] is calculated using an Ostwald viscosity tube, extrapolating the ratio ηsp / C of specific viscosity ηsp and concentration C (g / 100 ml) to 35 ° C. and o-chlorophenol to zero concentration, according to the following equation: Asked.
[η] = lim (ηsp / C) C → 0
[0026]
(2) Hydroxyl end concentration
2 mg of polymer in HFIP-d 2 / CDCl 3 (Volume ratio 1: 1) It was calculated from the peak integrated value of the proton at the α position with respect to the hydroxyl group at the end of the polymer and the proton of the aromatic ring, as measured by 1H NMR (400 MHz) after dissolving in 0.5 g.
(3) Various metals and P content in polymer
Decompose a specified amount of polymer with a mixed acid of hydrochloric acid and nitric acid, add yttrium solution as an internal standard to make the volume constant, and measure the amount of metal and P in the polymer using inductively coupled plasma emission spectroscopy based on JIS G1258 did.
[0027]
(4) Melting heat stability
The polymer is placed in a 15 cm diameter stainless steel cup and melted at 270 ° C. for 1 hour in a nitrogen purged electric furnace. After rapidly cooling this in an ice bath, the color tone of the polymer was visually determined when crystallized in a vacuum dryer at 150 ° C. for 1 hour.
(5) Content of cyclic dimer
0.3g of sample and 5ml of chloroform (CF 3 ) 2 After dissolving in a mixture of 5 ml of CHOH, 5 ml of chloroform was further added, and then about 80 ml of acetonitrile was added. The insoluble matter precipitated at this time was filtered off, and all the solutions were collected. Acetonitrile was added to this solution to make a 200 ml solution. This solution was analyzed using high performance liquid chromatography, and the amount of cyclic oligomer was measured. As the column, μBond asphere 15 μC-18-100A 3.9 × 190 mm (manufactured by Waters) was used, and a wavelength of UV 242 nm was used as a detector. The temperature is 45 ° C. and the flow rate is 1.5 ml / min.
[0028]
(6) Film adhesion
The sample was formed into a flat plate shape by a hot press heated to 260 ° C. using a mold having a length of 10 cm, a width of 10 cm, and a thickness of 3 mm (melting time 5 minutes, forming time 5 minutes, 70 ° C. cooling time 30 minutes). The molded body was heat-treated for 48 hours with a hot air dryer at 100 ° C., and then kept under conditions of 20 ° C. and 50% RH for 24 hours. This was coated with a clear coat agent (Planet PH-4, manufactured by Origin Electric Co., Ltd.), dried at 120 ° C., and kept at 20 ° C. and 50% RH for 24 hours. 10 × 10 grid-like cuts were made at 1 mm intervals with a razor blade on this coating part, and the number of remaining without peeling was counted when cellophane tape was applied and peeled at once. .
[0029]
[Example 1]
Charge 3900 g (20.1 mol) of dimethyl terephthalate, 3420 g (45 mol) of 1,3-propanediol and 2.34 g of titanium tetrabutoxide into a 10 L autoclave equipped with a plate-like stirring blade, and distill methanol at 220 ° C. The ester exchange reaction was carried out while leaving. The transesterification rate was 95%. After the transesterification reaction, 1.56 g of titanium tetrabutoxide as a catalyst and 1.95 g of trimethyl phosphate as a heat stabilizer were added, and after stirring for 30 minutes, a vacuum of 0.2 torr was distilled off while distilling 1,3-propanediol. The polycondensation reaction was carried out at 260 ° C. for 4 hours. Here, about 2 g of polymer was sampled from the sampling port of the autoclave, and then 4.0 g of phenylphosphonic acid was added into the autoclave, and the polycondensation reaction was continued at 260 ° C. for 30 minutes at a vacuum of 0.2 torr. After the reaction, the obtained polymer was extruded from the bottom of the reaction kettle into a rope shape and cut to obtain pellets. The obtained pellet had an intrinsic viscosity of 0.82 dl / g, a gram atomic ratio (P / Ti) of 2.61, and a cyclic dimer content of 2.62%. Further, the intrinsic viscosity of the polymer sampled halfway was 0.71 dl / g, and the hydroxyl group terminal concentration per kg of the polymer was 0.12 mol.
[0030]
When the melt heat stability of the obtained pellets was evaluated, almost no yellowing was observed on the surface of the polymer.
In addition, 2.71 g of powder obtained by pulverizing the obtained pellets to a particle size of 300 μm or less, a cylindrical autoclave whose inner diameter was adjusted to 260 ° C. under a nitrogen atmosphere and whose lid was cooled by running water was 10 cm. After evenly spreading on the bottom and melting, the degree of vacuum was immediately set to 0.2 Torr, and the cyclic dimer was forcibly sublimated over 30 minutes. After the treatment, the cyclic dimer deposited on the autoclave lid was collected and weighed to be 62 mg. On the other hand, the cyclic dimer content of the polymer after the treatment was reduced to 0.32%.
Moreover, when the obtained pellet was shape | molded and the coating-film adhesiveness was evaluated, it was 97/100.
[0031]
[Comparative Example 1]
After sampling by performing a polycondensation reaction for 4 hours under the same conditions as in Example 1, the polycondensation reaction was continued at 260 ° C. for 30 minutes at a vacuum of 0.2 torr without adding phenylphosphonic acid. After the reaction, the obtained polymer was extruded from the bottom of the reaction kettle into a rope shape and cut to obtain pellets. The obtained pellets had an intrinsic viscosity of 0.84 dl / g and a cyclic dimer content of 2.64%. Further, the intrinsic viscosity of the polymer sampled halfway was 0.70 dl / g, and the hydroxyl group terminal concentration per kg of the polymer was 0.12 mol.
When the melt heat stability of the obtained pellets was evaluated, formation of a dark brown foreign material was observed on the surface of the polymer.
[0032]
In addition, 2.71 g of powder obtained by pulverizing the obtained pellets to a particle size of 300 μm or less, a cylindrical autoclave whose inner diameter was adjusted to 260 ° C. under a nitrogen atmosphere and whose lid was cooled by running water was 10 cm. After evenly spreading on the bottom and melting, the degree of vacuum was immediately set to 0.2 Torr, and the cyclic dimer was forcibly sublimated over 30 minutes. After the treatment, the cyclic dimer deposited on the autoclave lid was collected and weighed to be 202 mg. On the other hand, the cyclic dimer content of the polymer after the treatment was reduced to 1.96%.
Moreover, when the obtained pellet was shape | molded and the coating-film adhesiveness was evaluated, it was 66/100, and when the peeling part was observed with the optical microscope, precipitation of the acicular crystal | crystallization was recognized partially.
[0033]
[Example 2]
Sampling was carried out by conducting a polycondensation reaction for 2 hours under the same conditions as in Example 1, then adding 4.0 g of phenylphosphonic acid into the autoclave, and continuing the polycondensation reaction at 260 ° C. for 2 hours at a vacuum of 0.2 torr. . After the reaction, the obtained polymer was extruded from the bottom of the reaction kettle into a rope shape and cut to obtain pellets. The obtained pellet had an intrinsic viscosity of 0.78 dl / g, a gram atomic ratio (P / Ti) of 2.59, and a cyclic dimer content of 2.52%. Further, the intrinsic viscosity of the polymer sampled halfway was 0.52 dl / g, and the hydroxyl group terminal concentration per kg of the polymer was 0.18 mol.
When the melt heat stability of the obtained pellets was evaluated, almost no yellowing was observed on the surface of the polymer.
[0034]
In addition, 2.71 g of powder obtained by pulverizing the obtained pellets to a particle size of 300 μm or less, a cylindrical autoclave whose inner diameter was adjusted to 260 ° C. under a nitrogen atmosphere and whose lid was cooled by running water was 10 cm. After evenly spreading on the bottom and melting, the degree of vacuum was immediately set to 0.2 Torr, and the cyclic dimer was forcibly sublimated over 30 minutes. After the treatment, the cyclic dimer deposited on the autoclave lid was collected and weighed to be 61 mg. On the other hand, the cyclic dimer content of the polymer after the treatment was reduced to 0.35%.
Moreover, when the obtained pellet was shape | molded and the coating-film adhesiveness was evaluated, it was 96/100.
[0035]
[Comparative Example 2]
After sampling by performing a polycondensation reaction for 2 hours under the same conditions as in Example 1, the polycondensation reaction was continued at 260 ° C. for 2 hours at a vacuum of 0.2 torr without adding phenylphosphonic acid. After the reaction, the obtained polymer was extruded from the bottom of the reaction kettle into a rope shape and cut to obtain pellets. The obtained pellet had an intrinsic viscosity of 0.85 dl / g and a cyclic dimer content of 2.62%. Further, the intrinsic viscosity of the polymer sampled halfway was 0.51 dl / g, and the hydroxyl group terminal concentration per kg of the polymer was 0.18 mol.
When the melt heat stability of the obtained pellets was evaluated, the formation of brown foreign matters was observed on the surface of the polymer.
[0036]
In addition, 2.71 g of powder obtained by pulverizing the obtained pellets to a particle size of 300 μm or less, a cylindrical autoclave whose inner diameter was adjusted to 260 ° C. under a nitrogen atmosphere and whose lid was cooled by running water was 10 cm. After evenly spreading on the bottom and melting, the degree of vacuum was immediately set to 0.2 Torr, and the cyclic dimer was forcibly sublimated over 30 minutes. After the treatment, the cyclic dimer deposited on the autoclave lid was collected and weighed to be 210 mg. On the other hand, the cyclic dimer content of the polymer after the treatment was reduced to 1.88%.
Moreover, when the obtained pellet was shape | molded and the coating-film adhesiveness was evaluated, it was 69/100.
[0037]
[Comparative Example 3]
Sampling was carried out by conducting a polycondensation reaction for 1 hour under the same conditions as in Example 1, then adding 4.0 g of phenylphosphonic acid into the autoclave, and further continuing the polycondensation reaction at 260 ° C. with a vacuum of 0.2 torr. As a reference for the degree, since the reading of the torque meter attached to the stirring blade did not increase, the test was extended to 6 hours. After the reaction, the obtained polymer was extruded from the bottom of the reaction kettle into a rope shape and cut to obtain pellets. The obtained pellet had an intrinsic viscosity of 0.48 dl / g, a gram atomic ratio (P / Ti) of 2.58, and a cyclic dimer content of 2.98%. Further, the intrinsic viscosity of the polymer sampled halfway was 0.21 dl / g, and the hydroxyl group terminal concentration per kg of the polymer was 0.36 mol.
When the heat stability of the obtained pellet was evaluated, slight yellowing was observed on the surface of the polymer.
[0038]
In addition, 2.71 g of powder obtained by pulverizing the obtained pellets to a particle size of 300 μm or less, a cylindrical autoclave whose inner diameter was adjusted to 260 ° C. under a nitrogen atmosphere and whose lid was cooled by running water was 10 cm. After evenly spreading on the bottom and melting, the degree of vacuum was immediately set to 0.2 Torr, and the cyclic dimer was forcibly sublimated over 30 minutes. After the treatment, the cyclic dimer deposited on the autoclave lid was collected and weighed to be 269 mg. On the other hand, the cyclic dimer content of the polymer after treatment was reduced to 2.18%.
Moreover, when the obtained pellet was shape | molded and the coating-film adhesiveness was evaluated, it was 43/100.
[0039]
[Example 3]
The sample was subjected to a polycondensation reaction for 4.5 hours under the same conditions as in Example 1, and then 4.0 g of phenylphosphonic acid was added to the autoclave, followed by a polycondensation reaction at 260 ° C. for 30 minutes at a vacuum of 0.2 torr. Continued. After the reaction, the obtained polymer was extruded from the bottom of the reaction kettle into a rope shape and cut to obtain pellets. The obtained pellet had an intrinsic viscosity of 1.00 dl / g, a gram atomic ratio (P / Ti) of 2.60, and a cyclic dimer content of 2.61%. Further, the intrinsic viscosity of the polymer sampled halfway was 0.86 dl / g, and the hydroxyl group terminal concentration per kg of the polymer was 0.03 mol.
When the melt heat stability of the obtained pellets was evaluated, almost no yellowing was observed on the surface of the polymer.
[0040]
In addition, 2.71 g of powder obtained by pulverizing the obtained pellets to a particle size of 300 μm or less, a cylindrical autoclave whose inner diameter was adjusted to 260 ° C. under a nitrogen atmosphere and whose lid was cooled by running water was 10 cm. After evenly spreading on the bottom and melting, the degree of vacuum was immediately set to 0.2 Torr, and the cyclic dimer was forcibly sublimated over 30 minutes. After the treatment, the cyclic dimer deposited on the autoclave lid was collected and weighed to be 61 mg. On the other hand, the cyclic dimer content of the polymer after the treatment was reduced to 0.29%.
Moreover, when the obtained pellet was shape | molded and the coating-film adhesiveness was evaluated, it was 98/100.
[0041]
[Comparative Example 4]
Sampling was carried out by conducting a polycondensation reaction for 5 hours under the same conditions as in Example 1, then adding 4.0 g of phenylphosphonic acid into the autoclave, and continuing the polycondensation reaction at 260 ° C. for 30 minutes at a vacuum of 0.2 torr. . After the reaction, the obtained polymer was extruded from the bottom of the reaction kettle into a rope shape and cut to obtain pellets. The obtained pellet had an intrinsic viscosity of 1.10 dl / g, a gram atomic ratio (P / Ti) of 2.60, and a cyclic dimer content of 2.62%. In addition, the intrinsic viscosity of the polymer sampled halfway was 0.93 dl / g, and the hydroxyl group terminal concentration per kg of the polymer was 0.01 mol.
When the melt heat stability of the obtained pellets was evaluated, the formation of brown foreign matters was observed on the surface of the polymer.
[0042]
In addition, 2.71 g of powder obtained by pulverizing the obtained pellets to a particle size of 300 μm or less, a cylindrical autoclave whose inner diameter was adjusted to 260 ° C. under a nitrogen atmosphere and whose lid was cooled by running water was 10 cm. After evenly spreading on the bottom and melting, the degree of vacuum was immediately set to 0.2 Torr, and the cyclic dimer was forcibly sublimated over 30 minutes. After the treatment, the cyclic dimer deposited on the autoclave lid was collected and weighed to be 219 mg. On the other hand, the cyclic dimer content of the polymer after the treatment was reduced to 1.78%.
Moreover, when the obtained pellet was shape | molded and the coating-film adhesiveness was evaluated, it was 69/100.
[0043]
[Example 4]
A polymer having an intrinsic viscosity of 0.84 dl / g and a cyclic dimer content of 2.64% obtained in Comparative Example 1 was admixed with 0.20% by weight of phenylphosphonic acid. Using a twin-screw extruder with a vent provided with two decompression zones with a screw diameter of 30 mmφ and L / D = 50.9, a screw rotation speed of 100 rpm, a resin temperature of 260 ° C., and vacuum in two decompression zones The degree was set at 30 torr, extruded in a rope shape at a feed rate of 5 kg / hr, and cut to obtain pellets. The intrinsic viscosity of the pellet was 0.82 dl / g, the gram atomic ratio (P / Ti) was 3.22, and the cyclic dimer content was 2.42%.
When the melt heat stability of the obtained pellets was evaluated, almost no yellowing was observed on the surface of the polymer.
[0044]
In addition, 2.71 g of powder obtained by pulverizing the obtained pellets to a particle size of 300 μm or less, a cylindrical autoclave whose inner diameter was adjusted to 260 ° C. under a nitrogen atmosphere and whose lid was cooled by running water was 10 cm. After evenly spreading on the bottom and melting, the degree of vacuum was immediately set to 0.2 Torr, and the cyclic dimer was forcibly sublimated over 30 minutes. After the treatment, the cyclic dimer deposited on the autoclave lid was collected and weighed to be 60 mg. On the other hand, the cyclic dimer content of the polymer after the treatment was reduced to 0.34%.
Moreover, when the obtained pellet was shape | molded and the coating-film adhesiveness was evaluated, it was 97/100.
[0045]
[Example 5]
The melt heat stability of the polymer and the precipitation behavior of the cyclic dimer were evaluated in the same manner as in Example 1 except that the amount of phenylphosphonic acid added was changed to 10 g. The obtained pellet had an intrinsic viscosity of 0.78 dl / g, a gram atomic ratio (P / Ti) of 6.51, and a cyclic dimer content of 2.58%.
When the melt heat stability of the obtained pellets was evaluated, almost no yellowing was observed on the surface of the polymer.
In addition, 2.71 g of powder obtained by pulverizing the obtained pellets to a particle size of 300 μm or less, a cylindrical autoclave whose inner diameter was adjusted to 260 ° C. under a nitrogen atmosphere and whose lid was cooled by running water was 10 cm. After evenly spreading on the bottom and melting, the degree of vacuum was immediately set to 0.2 Torr, and the cyclic dimer was forcibly sublimated over 30 minutes. After the treatment, the cyclic dimer deposited on the autoclave lid was collected and weighed to be 61 mg. On the other hand, the cyclic dimer content of the polymer after the treatment was reduced to 0.32%.
Moreover, when the obtained pellet was shape | molded and the coating-film adhesiveness was evaluated, it was 99/100.
[0046]
[Example 6]
The melt heat stability of the polymer and the precipitation behavior of the cyclic dimer were evaluated in the same manner as in Example 1 except that the amount of phenylphosphonic acid added was changed to 1 g. The obtained pellet had an intrinsic viscosity of 0.84 dl / g, a gram atomic ratio (P / Ti) of 0.65, and a cyclic dimer content of 2.62%.
When the melt heat stability of the obtained pellets was evaluated, almost no yellowing was observed on the surface of the polymer.
In addition, 2.71 g of powder obtained by pulverizing the obtained pellets to a particle size of 300 μm or less, a cylindrical autoclave whose inner diameter was adjusted to 260 ° C. under a nitrogen atmosphere and whose lid was cooled by running water was 10 cm. After evenly spreading on the bottom and melting, the degree of vacuum was immediately set to 0.2 Torr, and the cyclic dimer was forcibly sublimated over 30 minutes. After the treatment, the cyclic dimer deposited on the autoclave lid was collected and weighed to be 62 mg. On the other hand, the cyclic dimer content of the polymer after the treatment was reduced to 0.33%.
Moreover, it was 95/100 when the obtained pellet was shape | molded and the coating-film adhesiveness was evaluated.
[0047]
[Comparative Example 5]
The melt heat stability of the polymer and the precipitation behavior of the cyclic dimer were evaluated in the same manner as in Example 1 except that the amount of phenylphosphonic acid added was changed to 0.13 g. The obtained pellet had an intrinsic viscosity of 0.84 dl / g, a gram atomic ratio (P / Ti) of 0.08, and a cyclic dimer content of 2.64%.
When the melt heat stability of the obtained pellets was evaluated, formation of a dark brown foreign material was observed on the surface of the polymer.
In addition, 2.71 g of powder obtained by pulverizing the obtained pellets to a particle size of 300 μm or less, a cylindrical autoclave whose inner diameter was adjusted to 260 ° C. under a nitrogen atmosphere and whose lid was cooled by running water was 10 cm. After evenly spreading on the bottom and melting, the degree of vacuum was immediately set to 0.2 Torr, and the cyclic dimer was forcibly sublimated over 30 minutes. After the treatment, the cyclic dimer deposited on the autoclave lid was collected and weighed to be 199 mg. On the other hand, the cyclic dimer content of the polymer after the treatment was reduced to 1.81%.
Moreover, it was 68/100 when the obtained pellet was shape | molded and the coating-film adhesiveness was evaluated.
[0048]
[Example 7]
The pellet obtained in Example 1 was subjected to solid phase polymerization at 205 ° C. under a nitrogen stream for 30 hours. The intrinsic viscosity was 0.92 dl / g, the gram atomic ratio (P / Ti) was 2.60, and the cyclic dimer A pellet with a content of 1.12% was obtained.
When the melt heat stability of the obtained pellets was evaluated, almost no yellowing was observed on the surface of the polymer.
In addition, 2.71 g of powder obtained by pulverizing the obtained pellets to a particle size of 300 μm or less, a cylindrical autoclave whose inner diameter was adjusted to 260 ° C. under a nitrogen atmosphere and whose lid was cooled by running water was 10 cm. After evenly spreading on the bottom and melting, the degree of vacuum was immediately set to 0.2 Torr, and the cyclic dimer was forcibly sublimated over 30 minutes. After the treatment, the cyclic dimer deposited on the autoclave lid was collected and weighed to be 21 mg. On the other hand, the cyclic dimer content of the treated polymer was reduced to 0.31%.
Moreover, when the obtained pellet was shape | molded and the coating-film adhesiveness was evaluated, it was 97/100.
[0049]
[Example 8]
Polymerization was carried out in the same manner as in Example 1, except that 4.0 g of diphenylphosphonic acid was added instead of 4.0 g of phenylphosphonic acid. After the reaction, the obtained polymer was extruded from the bottom of the reaction kettle into a rope shape and cut to obtain pellets. The obtained pellet had an intrinsic viscosity of 0.83 dl / g, a gram atomic ratio (P / Ti) of 1.87, and a cyclic dimer content of 2.63%. Further, the intrinsic viscosity of the polymer sampled halfway was 0.71 dl / g, and the hydroxyl group terminal concentration per kg of the polymer was 0.11 mol.
When the melt heat stability of the obtained pellets was evaluated, almost no yellowing was observed on the surface of the polymer.
In addition, 2.71 g of powder obtained by pulverizing the obtained pellets to a particle size of 300 μm or less, a cylindrical autoclave whose inner diameter was adjusted to 260 ° C. under a nitrogen atmosphere and whose lid was cooled by running water was 10 cm. After evenly spreading on the bottom and melting, the degree of vacuum was immediately set to 0.2 Torr, and the cyclic dimer was forcibly sublimated over 30 minutes. After the treatment, the cyclic dimer deposited on the autoclave lid was collected and weighed to be 65 mg. On the other hand, the cyclic dimer content of the polymer after the treatment was reduced to 0.30%.
Moreover, when the obtained pellet was shape | molded and the coating-film adhesiveness was evaluated, it was 98/100.
[0050]
[Example 9]
Polymerization was carried out in the same manner as in Example 1 except that 2.78 g and 1.85 g of tin 2-ethylhexanoate were added instead of 2.34 g and 1.56 g of titanium tetrabutoxide. After the reaction, the obtained polymer was extruded from the bottom of the reaction kettle into a rope shape and cut to obtain pellets. The obtained pellet had an intrinsic viscosity of 0.89 dl / g, a gram atomic ratio (P / Sn) of 2.62, and a cyclic dimer content of 2.43%. Further, the intrinsic viscosity of the polymer sampled halfway was 0.78 dl / g, and the hydroxyl group terminal concentration per kg of the polymer was 0.10 mol.
When the melt heat stability of the obtained pellets was evaluated, almost no yellowing was observed on the surface of the polymer.
[0051]
In addition, 2.71 g of powder obtained by pulverizing the obtained pellets to a particle size of 300 μm or less, a cylindrical autoclave whose inner diameter was adjusted to 260 ° C. under a nitrogen atmosphere and whose lid was cooled by running water was 10 cm. After evenly spreading on the bottom and melting, the degree of vacuum was immediately set to 0.2 Torr, and the cyclic dimer was forcibly sublimated over 30 minutes. After the treatment, the cyclic dimer deposited on the autoclave lid was collected and weighed to be 58 mg. On the other hand, the cyclic dimer content of the polymer after the treatment was reduced to 0.30%.
Moreover, when the obtained pellet was shape | molded and the coating-film adhesiveness was evaluated, it was 98/100.
[0052]
【The invention's effect】
The present invention is excellent in heat stability of melting, has little formation and precipitation of a cyclic dimer at the time of melt residence, and has excellent moldability, and the molded body is also excellent in paint and paste applicability and adhesiveness. A polytrimethylene terephthalate resin composition is provided.
Claims (1)
(R) m PO(OH) 3-m (I)
(Rはフェニル基、またはカルボキシル基を有するフェニル基であり、mは1〜2である) A polytrimethylene terephthalate resin composition having an intrinsic viscosity of 0.5 dl / g or more, wherein 80% by weight or more of repeating units are made of trimethylene terephthalate units, prepared in the presence of a metal compound catalyst, and a polycondensation reaction proceeds the reduction of the hydroxyl end concentration due to, phosphorus terminal hydroxyl group concentration per polymer 1kg at any stage in the range of more than 0.02mol from below 0.19 mol, represented in the polymerization system by the following general formula (I) Polytrimethylene terephthalate characterized in that the compound is added and contained so that the gram atomic ratio (P / M) of phosphorus atom to metal atom M is in the range of 0.1 to 10 with respect to the metal compound catalyst. A method for producing a resin composition.
(R) m PO (OH) 3-m (I)
(R is a phenyl group or a phenyl group having a carboxyl group, and m is 1 to 2)
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JP6198173B2 (en) * | 2013-02-28 | 2017-09-20 | 三菱瓦斯化学株式会社 | Oxygen-absorbing resin composition |
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CN108341936B (en) * | 2017-01-22 | 2021-05-18 | 东丽纤维研究所(中国)有限公司 | Preparation method of polyester composition |
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