WO1998008881A1 - Sternpolymere und verfahren zu deren herstellung - Google Patents
Sternpolymere und verfahren zu deren herstellung Download PDFInfo
- Publication number
- WO1998008881A1 WO1998008881A1 PCT/EP1997/004432 EP9704432W WO9808881A1 WO 1998008881 A1 WO1998008881 A1 WO 1998008881A1 EP 9704432 W EP9704432 W EP 9704432W WO 9808881 A1 WO9808881 A1 WO 9808881A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hydrogen
- alkyl
- star
- phenyl
- polymer according
- Prior art date
Links
- 229920000642 polymer Polymers 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims description 21
- 239000000178 monomer Substances 0.000 claims abstract description 33
- 229910052723 transition metal Inorganic materials 0.000 claims abstract description 15
- 229920002554 vinyl polymer Polymers 0.000 claims abstract description 15
- 150000003624 transition metals Chemical class 0.000 claims abstract description 14
- 239000003054 catalyst Substances 0.000 claims abstract description 12
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 4
- -1 aluminum compound Chemical class 0.000 claims description 40
- 150000001875 compounds Chemical class 0.000 claims description 26
- 239000001257 hydrogen Substances 0.000 claims description 21
- 229910052739 hydrogen Inorganic materials 0.000 claims description 21
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 20
- 125000004432 carbon atom Chemical group C* 0.000 claims description 17
- 125000000217 alkyl group Chemical group 0.000 claims description 14
- 239000010936 titanium Substances 0.000 claims description 12
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 11
- 229910052782 aluminium Inorganic materials 0.000 claims description 10
- 229910052719 titanium Inorganic materials 0.000 claims description 10
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 9
- 229910052736 halogen Inorganic materials 0.000 claims description 9
- 150000002367 halogens Chemical class 0.000 claims description 9
- 150000002431 hydrogen Chemical class 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 8
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical group [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 8
- 229910052801 chlorine Inorganic materials 0.000 claims description 8
- 239000000460 chlorine Substances 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 238000000465 moulding Methods 0.000 claims description 7
- 239000000835 fiber Substances 0.000 claims description 5
- 229910052732 germanium Inorganic materials 0.000 claims description 5
- 229910052735 hafnium Inorganic materials 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 239000011541 reaction mixture Substances 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- 229910052718 tin Inorganic materials 0.000 claims description 5
- 229910052726 zirconium Inorganic materials 0.000 claims description 5
- 125000004429 atom Chemical group 0.000 claims description 4
- 229910052796 boron Inorganic materials 0.000 claims description 4
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 4
- 239000003446 ligand Substances 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 4
- 229930195735 unsaturated hydrocarbon Natural products 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical group [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 229910052733 gallium Inorganic materials 0.000 claims description 3
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical group [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims description 3
- 238000004898 kneading Methods 0.000 claims description 3
- 229910052758 niobium Inorganic materials 0.000 claims description 3
- 230000000379 polymerizing effect Effects 0.000 claims description 3
- 239000010703 silicon Chemical group 0.000 claims description 3
- 229910052715 tantalum Inorganic materials 0.000 claims description 3
- 150000003609 titanium compounds Chemical class 0.000 claims description 3
- 229910052720 vanadium Inorganic materials 0.000 claims description 3
- 229910052787 antimony Inorganic materials 0.000 claims description 2
- 229910052793 cadmium Inorganic materials 0.000 claims description 2
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 125000000524 functional group Chemical group 0.000 claims description 2
- 229910052741 iridium Inorganic materials 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 229910052748 manganese Inorganic materials 0.000 claims description 2
- 229910052750 molybdenum Inorganic materials 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 229910052762 osmium Inorganic materials 0.000 claims description 2
- 229910052763 palladium Inorganic materials 0.000 claims description 2
- 229910052698 phosphorus Inorganic materials 0.000 claims description 2
- 229910052697 platinum Inorganic materials 0.000 claims description 2
- 229910052703 rhodium Inorganic materials 0.000 claims description 2
- 229910052707 ruthenium Inorganic materials 0.000 claims description 2
- 150000003440 styrenes Chemical class 0.000 claims description 2
- 229910052721 tungsten Inorganic materials 0.000 claims description 2
- 229910052725 zinc Inorganic materials 0.000 claims description 2
- 150000001399 aluminium compounds Chemical class 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 15
- 150000003254 radicals Chemical class 0.000 description 15
- 239000000203 mixture Substances 0.000 description 14
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 12
- 238000006116 polymerization reaction Methods 0.000 description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 7
- 125000004122 cyclic group Chemical group 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- 239000002904 solvent Substances 0.000 description 7
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000004793 Polystyrene Substances 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 229920010524 Syndiotactic polystyrene Polymers 0.000 description 5
- 150000001768 cations Chemical class 0.000 description 5
- VHSXMWVPBRDVFR-UHFFFAOYSA-N tetrakis[(4-ethenylphenyl)methyl]silane Chemical compound C1=CC(C=C)=CC=C1C[Si](CC=1C=CC(C=C)=CC=1)(CC=1C=CC(C=C)=CC=1)CC1=CC=C(C=C)C=C1 VHSXMWVPBRDVFR-UHFFFAOYSA-N 0.000 description 5
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 5
- MYRTYDVEIRVNKP-UHFFFAOYSA-N 1,2-Divinylbenzene Chemical compound C=CC1=CC=CC=C1C=C MYRTYDVEIRVNKP-UHFFFAOYSA-N 0.000 description 4
- YNQLUTRBYVCPMQ-UHFFFAOYSA-N Ethylbenzene Chemical compound CCC1=CC=CC=C1 YNQLUTRBYVCPMQ-UHFFFAOYSA-N 0.000 description 4
- 239000002841 Lewis acid Substances 0.000 description 4
- 230000004913 activation Effects 0.000 description 4
- SIPUZPBQZHNSDW-UHFFFAOYSA-N bis(2-methylpropyl)aluminum Chemical compound CC(C)C[Al]CC(C)C SIPUZPBQZHNSDW-UHFFFAOYSA-N 0.000 description 4
- 229920001577 copolymer Polymers 0.000 description 4
- 150000008040 ionic compounds Chemical class 0.000 description 4
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 4
- CPOFMOWDMVWCLF-UHFFFAOYSA-N methyl(oxo)alumane Chemical compound C[Al]=O CPOFMOWDMVWCLF-UHFFFAOYSA-N 0.000 description 4
- 230000000737 periodic effect Effects 0.000 description 4
- 229920002223 polystyrene Polymers 0.000 description 4
- PBKONEOXTCPAFI-UHFFFAOYSA-N 1,2,4-trichlorobenzene Chemical compound ClC1=CC=C(Cl)C(Cl)=C1 PBKONEOXTCPAFI-UHFFFAOYSA-N 0.000 description 3
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 3
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 3
- DPSOUODMTOWXTB-UHFFFAOYSA-N CC1=C(C)C(C)([Ti])C(C)=C1C Chemical compound CC1=C(C)C(C)([Ti])C(C)=C1C DPSOUODMTOWXTB-UHFFFAOYSA-N 0.000 description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 3
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 125000003710 aryl alkyl group Chemical group 0.000 description 3
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 3
- 229910052794 bromium Inorganic materials 0.000 description 3
- 238000004132 cross linking Methods 0.000 description 3
- ZSWFCLXCOIISFI-UHFFFAOYSA-N cyclopentadiene Chemical compound C1C=CC=C1 ZSWFCLXCOIISFI-UHFFFAOYSA-N 0.000 description 3
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 3
- 229910052731 fluorine Inorganic materials 0.000 description 3
- 239000011737 fluorine Substances 0.000 description 3
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 3
- 125000003106 haloaryl group Chemical group 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 3
- 125000001424 substituent group Chemical group 0.000 description 3
- PAMIQIKDUOTOBW-UHFFFAOYSA-N 1-methylpiperidine Chemical compound CN1CCCCC1 PAMIQIKDUOTOBW-UHFFFAOYSA-N 0.000 description 2
- JLBJTVDPSNHSKJ-UHFFFAOYSA-N 4-Methylstyrene Chemical compound CC1=CC=C(C=C)C=C1 JLBJTVDPSNHSKJ-UHFFFAOYSA-N 0.000 description 2
- VXEGSRKPIUDPQT-UHFFFAOYSA-N 4-[4-(4-methoxyphenyl)piperazin-1-yl]aniline Chemical compound C1=CC(OC)=CC=C1N1CCN(C=2C=CC(N)=CC=2)CC1 VXEGSRKPIUDPQT-UHFFFAOYSA-N 0.000 description 2
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 239000007848 Bronsted acid Substances 0.000 description 2
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- MMUOQVMXNIPLFQ-UHFFFAOYSA-N C1=CC(C=C)=CC=C1C[Ti](CC=1C=CC(C=C)=CC=1)(CC=1C=CC(C=C)=CC=1)CC1=CC=C(C=C)C=C1 Chemical compound C1=CC(C=C)=CC=C1C[Ti](CC=1C=CC(C=C)=CC=1)(CC=1C=CC(C=C)=CC=1)CC1=CC=C(C=C)C=C1 MMUOQVMXNIPLFQ-UHFFFAOYSA-N 0.000 description 2
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical class CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 2
- XYFCBTPGUUZFHI-UHFFFAOYSA-N Phosphine Chemical compound P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 125000003545 alkoxy group Chemical group 0.000 description 2
- 125000002877 alkyl aryl group Chemical group 0.000 description 2
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical compound C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 description 2
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
- 150000005840 aryl radicals Chemical class 0.000 description 2
- 239000012298 atmosphere Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 125000004369 butenyl group Chemical group C(=CCC)* 0.000 description 2
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- MGNZXYYWBUKAII-UHFFFAOYSA-N cyclohexa-1,3-diene Chemical compound C1CC=CC=C1 MGNZXYYWBUKAII-UHFFFAOYSA-N 0.000 description 2
- 125000001033 ether group Chemical group 0.000 description 2
- 125000001188 haloalkyl group Chemical group 0.000 description 2
- 125000001072 heteroaryl group Chemical group 0.000 description 2
- 239000011630 iodine Substances 0.000 description 2
- 229910052740 iodine Inorganic materials 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 150000007517 lewis acids Chemical class 0.000 description 2
- 125000005394 methallyl group Chemical group 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical class CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 239000010955 niobium Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 125000002255 pentenyl group Chemical group C(=CCCC)* 0.000 description 2
- 229920001707 polybutylene terephthalate Polymers 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000005049 silicon tetrachloride Substances 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- RRKODOZNUZCUBN-CCAGOZQPSA-N (1z,3z)-cycloocta-1,3-diene Chemical compound C1CC\C=C/C=C\C1 RRKODOZNUZCUBN-CCAGOZQPSA-N 0.000 description 1
- LWNGJAHMBMVCJR-UHFFFAOYSA-N (2,3,4,5,6-pentafluorophenoxy)boronic acid Chemical compound OB(O)OC1=C(F)C(F)=C(F)C(F)=C1F LWNGJAHMBMVCJR-UHFFFAOYSA-N 0.000 description 1
- 125000000008 (C1-C10) alkyl group Chemical group 0.000 description 1
- 125000004169 (C1-C6) alkyl group Chemical group 0.000 description 1
- 0 *C(c1c(*)c(*)c(*)c(*)c1*)=C Chemical compound *C(c1c(*)c(*)c(*)c(*)c1*)=C 0.000 description 1
- QCEOZLISXJGWSW-UHFFFAOYSA-K 1,2,3,4,5-pentamethylcyclopentane;trichlorotitanium Chemical compound [Cl-].[Cl-].[Cl-].CC1=C(C)C(C)([Ti+3])C(C)=C1C QCEOZLISXJGWSW-UHFFFAOYSA-K 0.000 description 1
- GWYPDXLJACEENP-UHFFFAOYSA-N 1,3-cycloheptadiene Chemical compound C1CC=CC=CC1 GWYPDXLJACEENP-UHFFFAOYSA-N 0.000 description 1
- ZRZHXNCATOYMJH-UHFFFAOYSA-N 1-(chloromethyl)-4-ethenylbenzene Chemical compound ClCC1=CC=C(C=C)C=C1 ZRZHXNCATOYMJH-UHFFFAOYSA-N 0.000 description 1
- KTZVZZJJVJQZHV-UHFFFAOYSA-N 1-chloro-4-ethenylbenzene Chemical compound ClC1=CC=C(C=C)C=C1 KTZVZZJJVJQZHV-UHFFFAOYSA-N 0.000 description 1
- OEVVKKAVYQFQNV-UHFFFAOYSA-N 1-ethenyl-2,4-dimethylbenzene Chemical compound CC1=CC=C(C=C)C(C)=C1 OEVVKKAVYQFQNV-UHFFFAOYSA-N 0.000 description 1
- 238000001644 13C nuclear magnetic resonance spectroscopy Methods 0.000 description 1
- KXYAVSFOJVUIHT-UHFFFAOYSA-N 2-vinylnaphthalene Chemical compound C1=CC=CC2=CC(C=C)=CC=C21 KXYAVSFOJVUIHT-UHFFFAOYSA-N 0.000 description 1
- OGOYZCQQQFAGRI-UHFFFAOYSA-N 9-ethenylanthracene Chemical compound C1=CC=C2C(C=C)=C(C=CC=C3)C3=CC2=C1 OGOYZCQQQFAGRI-UHFFFAOYSA-N 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- VVNCNSJFMMFHPL-VKHMYHEASA-N D-penicillamine Chemical group CC(C)(S)[C@@H](N)C(O)=O VVNCNSJFMMFHPL-VKHMYHEASA-N 0.000 description 1
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 description 1
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical class CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- FOIXSVOLVBLSDH-UHFFFAOYSA-N Silver ion Chemical compound [Ag+] FOIXSVOLVBLSDH-UHFFFAOYSA-N 0.000 description 1
- CIUQDSCDWFSTQR-UHFFFAOYSA-N [C]1=CC=CC=C1 Chemical compound [C]1=CC=CC=C1 CIUQDSCDWFSTQR-UHFFFAOYSA-N 0.000 description 1
- 125000005595 acetylacetonate group Chemical group 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 125000003342 alkenyl group Chemical group 0.000 description 1
- 125000002947 alkylene group Chemical group 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 125000004104 aryloxy group Chemical group 0.000 description 1
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 1
- 150000001639 boron compounds Chemical class 0.000 description 1
- 235000013844 butane Nutrition 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- NHFDIUPJVYYTLG-UHFFFAOYSA-N carbononitridic isocyanide Chemical compound [C-]#[N+]C#N NHFDIUPJVYYTLG-UHFFFAOYSA-N 0.000 description 1
- 239000012876 carrier material Substances 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000004696 coordination complex Chemical class 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 125000001651 cyanato group Chemical group [*]OC#N 0.000 description 1
- 125000004093 cyano group Chemical group *C#N 0.000 description 1
- 125000000753 cycloalkyl group Chemical group 0.000 description 1
- CHVJITGCYZJHLR-UHFFFAOYSA-N cyclohepta-1,3,5-triene Chemical compound C1C=CC=CC=C1 CHVJITGCYZJHLR-UHFFFAOYSA-N 0.000 description 1
- ICPMUWPXCAVOOQ-UHFFFAOYSA-N cycloocta-1,3,5-triene Chemical compound C1CC=CC=CC=C1 ICPMUWPXCAVOOQ-UHFFFAOYSA-N 0.000 description 1
- KDUIUFJBNGTBMD-VXMYFEMYSA-N cyclooctatetraene Chemical compound C1=C\C=C/C=C\C=C1 KDUIUFJBNGTBMD-VXMYFEMYSA-N 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- JLTDJTHDQAWBAV-UHFFFAOYSA-O dimethyl(phenyl)azanium Chemical compound C[NH+](C)C1=CC=CC=C1 JLTDJTHDQAWBAV-UHFFFAOYSA-O 0.000 description 1
- OGGXGZAMXPVRFZ-UHFFFAOYSA-N dimethylarsinic acid Chemical compound C[As](C)(O)=O OGGXGZAMXPVRFZ-UHFFFAOYSA-N 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- VURFVHCLMJOLKN-UHFFFAOYSA-N diphosphane Chemical compound PP VURFVHCLMJOLKN-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 150000002118 epoxides Chemical class 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 229940071106 ethylenediaminetetraacetate Drugs 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 125000002541 furyl group Chemical group 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 150000002366 halogen compounds Chemical class 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 229910052747 lanthanoid Inorganic materials 0.000 description 1
- 150000002602 lanthanoids Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 239000012968 metallocene catalyst Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- NFWSQSCIDYBUOU-UHFFFAOYSA-N methylcyclopentadiene Chemical compound CC1=CC=CC1 NFWSQSCIDYBUOU-UHFFFAOYSA-N 0.000 description 1
- 125000001570 methylene group Chemical group [H]C([H])([*:1])[*:2] 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical class CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001280 n-hexyl group Chemical group C(CCCCC)* 0.000 description 1
- 150000002790 naphthalenes Chemical class 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 1
- 125000002524 organometallic group Chemical group 0.000 description 1
- 125000001181 organosilyl group Chemical group [SiH3]* 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- HDBWAWNLGGMZRQ-UHFFFAOYSA-N p-Vinylbiphenyl Chemical group C1=CC(C=C)=CC=C1C1=CC=CC=C1 HDBWAWNLGGMZRQ-UHFFFAOYSA-N 0.000 description 1
- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 125000000538 pentafluorophenyl group Chemical group FC1=C(F)C(F)=C(*)C(F)=C1F 0.000 description 1
- WQIQNKQYEUMPBM-UHFFFAOYSA-N pentamethylcyclopentadiene Chemical compound CC1C(C)=C(C)C(C)=C1C WQIQNKQYEUMPBM-UHFFFAOYSA-N 0.000 description 1
- 229910000073 phosphorus hydride Inorganic materials 0.000 description 1
- WKFBZNUBXWCCHG-UHFFFAOYSA-N phosphorus trifluoride Chemical compound FP(F)F WKFBZNUBXWCCHG-UHFFFAOYSA-N 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- LVTJOONKWUXEFR-FZRMHRINSA-N protoneodioscin Natural products O(C[C@@H](CC[C@]1(O)[C@H](C)[C@@H]2[C@]3(C)[C@H]([C@H]4[C@@H]([C@]5(C)C(=CC4)C[C@@H](O[C@@H]4[C@H](O[C@H]6[C@@H](O)[C@@H](O)[C@@H](O)[C@H](C)O6)[C@@H](O)[C@H](O[C@H]6[C@@H](O)[C@@H](O)[C@@H](O)[C@H](C)O6)[C@H](CO)O4)CC5)CC3)C[C@@H]2O1)C)[C@H]1[C@H](O)[C@H](O)[C@H](O)[C@@H](CO)O1 LVTJOONKWUXEFR-FZRMHRINSA-N 0.000 description 1
- 125000004076 pyridyl group Chemical group 0.000 description 1
- 125000000714 pyrimidinyl group Chemical group 0.000 description 1
- 239000012429 reaction media Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229940054334 silver cation Drugs 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 description 1
- 150000003623 transition metal compounds Chemical class 0.000 description 1
- OBAJXDYVZBHCGT-UHFFFAOYSA-N tris(pentafluorophenyl)borane Chemical compound FC1=C(F)C(F)=C(F)C(F)=C1B(C=1C(=C(F)C(F)=C(F)C=1F)F)C1=C(F)C(F)=C(F)C(F)=C1F OBAJXDYVZBHCGT-UHFFFAOYSA-N 0.000 description 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000010626 work up procedure Methods 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 150000003738 xylenes Chemical class 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F297/00—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer
- C08F297/02—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the anionic type
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/28—Titanium compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F10/00—Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F212/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring
- C08F212/02—Monomers containing only one unsaturated aliphatic radical
- C08F212/04—Monomers containing only one unsaturated aliphatic radical containing one ring
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F212/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring
- C08F212/02—Monomers containing only one unsaturated aliphatic radical
- C08F212/04—Monomers containing only one unsaturated aliphatic radical containing one ring
- C08F212/06—Hydrocarbons
- C08F212/08—Styrene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F212/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring
- C08F212/02—Monomers containing only one unsaturated aliphatic radical
- C08F212/04—Monomers containing only one unsaturated aliphatic radical containing one ring
- C08F212/14—Monomers containing only one unsaturated aliphatic radical containing one ring substituted by heteroatoms or groups containing heteroatoms
- C08F212/16—Halogens
- C08F212/18—Chlorine
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F212/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring
- C08F212/02—Monomers containing only one unsaturated aliphatic radical
- C08F212/32—Monomers containing only one unsaturated aliphatic radical containing two or more rings
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F212/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring
- C08F212/34—Monomers containing two or more unsaturated aliphatic radicals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F4/00—Polymerisation catalysts
- C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
- C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
- C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
- C08F4/62—Refractory metals or compounds thereof
- C08F4/64—Titanium, zirconium, hafnium or compounds thereof
- C08F4/659—Component covered by group C08F4/64 containing a transition metal-carbon bond
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F4/00—Polymerisation catalysts
- C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
- C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
- C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
- C08F4/62—Refractory metals or compounds thereof
- C08F4/64—Titanium, zirconium, hafnium or compounds thereof
- C08F4/659—Component covered by group C08F4/64 containing a transition metal-carbon bond
- C08F4/65912—Component covered by group C08F4/64 containing a transition metal-carbon bond in combination with an organoaluminium compound
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F4/00—Polymerisation catalysts
- C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
- C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
- C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
- C08F4/62—Refractory metals or compounds thereof
- C08F4/64—Titanium, zirconium, hafnium or compounds thereof
- C08F4/659—Component covered by group C08F4/64 containing a transition metal-carbon bond
- C08F4/6592—Component covered by group C08F4/64 containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring
Definitions
- the present invention relates to star polymers obtainable by polymerizing vinylaromatic monomers with a branching monomer unit which contains at least two vinylaromatic functional groups, in the presence of a catalyst, obtainable from A) a transition metal complex of subgroup II to VIII, B) a cation-forming agent and C) optionally an aluminum compound.
- the present invention further relates to a process for the production of these star polymers and their use for the production of fibers, films and moldings, in particular injection-molded molding compositions, and the fibers, films and moldings obtainable here.
- syndiotactic polystyrene Due to its crystallinity, syndiotactic polystyrene has a very high melting point of approx. 270 ° C, high rigidity and tensile strength, dimensional stability, a low dielectric constant and a high chemical resistance. The mechanical property profile is maintained even at temperatures above the glass temperature.
- the production of syndiotactic polystyrene in the presence of metallocene catalyst systems is known for example from EP-A-210 615.
- thermoplastics e.g. PS, PB, PMMA, PE, PP, EP, PA6, PA66, PET, PBT, ABS, ASA etc.
- crystallization of the syndiotactic polystyrene often occurs from about 10% conversion.
- EP-A-572 990 describes metallocene-catalyzed copolymers of styrene and ethylene with improved compatibility and high elasticity. However, these copolymers do not have the high stereotacticity and therefore do not achieve the high temperature properties of syndiotactic. Polystyrene.
- Copolymers of styrene and divinylbenzene are described in EP-A-311 099 and EP-A-490 269. Only one vinyl group of divinylbenzene reacts under the reaction conditions. The remaining vinyl groups are used for grafting reactions, or at
- Crosslinking reaction molecular weights of 1,000,000 to 6,000,000 can be obtained.
- Star polymers belong to the branched polymers (Falbe, Römpp Chemie Lexikon, Georg Thieme Verlag, 9th edition, Stuttgart 1992, page 4304). They are usually obtained by polymerizing monomers with polyfunctional initiators as starters, polyaddition of e.g. Epoxides to polyhydric alcohols or by coupling pre-made polymers e.g. Polystyrene Li to a center e.g. Silicon tetrachloride manufactured.
- star polymers made from vinylaromatic monomers which, at the same time, have low melt viscosities at a high molecular weight and also have a high end group functionality for grafting, crosslinking and other polymer-analogous reactions. Furthermore, the star polymers should have an essentially syndiotactic structure, i.e. show more than 30%, especially more than 60% syndiotacticity.
- star polymers defined at the outset with the branching monomer units were found to consist of at least two vinylaromatic functional radicals.
- the molar ratio of vinyl aromatic monomers to the branching monomer unit is generally between 10,000,000: 1 and 10: 1.
- the star polymers according to the invention have a syndiotacticity of more than 60%, generally more than 90%.
- branching monomers are compounds of the general formula I 32
- R a is hydrogen, halogen, or an inert organic radical having up to 20 C atoms, where R a can be the same or different in the case of p> 2 and two radicals R a together with the metal atom bonded to them form a 3 to 8 can form a membered ring and R a can also be a common complex ligand when M is a transition metal,
- Rb is hydrogen, C ⁇ -C alkyl or phenyl
- R c is hydrogen, -CC alkyl, phenyl, chlorine or an unsaturated hydrocarbon radical having 2 to 6 carbon atoms;
- MC Si, Ge, Sn, B, AI, Ga, N, P, Sb, Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Mn, Fe, Ru, Os, Co, Rh, Ir, Ni, Pd, Pt, Cu, Zn, Cd,
- These monomers can be obtained, for example, via the Grignard compounds of chloro (alkyl) styrenes with the corresponding carbon, metal or transition metal compounds, for example the halogen compounds.
- Such reactions are, for example, in the case where M is silicon, germanium or tin in K. Nankishi, J. Chem. Soc. Perkin Trans I, 1990, page 3362.
- Branching monomer units of the formula I in which M denotes carbon, silicon, germanium, tin or titanium are particularly preferred since they are easily accessible.
- the index m is preferably 0 to 8, particularly preferably 0 to 4.
- the invention also relates to the new titanium-containing monomers of the formula Ia
- R a , R b and R as well as m, n and p have the abovementioned meaning.
- the inert organic radicals R a have no essential meaning for the process. Rather, they only serve to saturate the free valences on the M and can be selected for easy access.
- aliphatic, cycloaliphatic, aryl, heteroaryl or aralkyl radicals come into consideration.
- Aliphatic radicals include alkyl, alkoxy, alkenyl or alkynyl radicals with, for example, 1 to 2 or 20 carbon atoms.
- Cycloaliphatic radicals include cycloalkyl radicals with 3 to 8 carbon atoms. Instead of a methylene group in the alkyl or cycloalkyl radical, an oxygen atom in ether function can also be present.
- Aryl radicals are, for example, phenyl or naphthyl radicals, it also being possible for two phenyl groups to be linked to one another via an oxygen.
- Aralkyl radicals are, for example, those having 7 to 20 carbon atoms, which result from the combination of a phenyl radical with an alkyl radical.
- Heteroaryl residues are, for example, pyridyl, pyrimidyl or furyl residues.
- the radicals mentioned can also be further substituted, for example by alkyl, alkoxy, halogen such as fluorine, chlorine or bromine, cyano, nitro, epoxy, carbonyl, ester groupings, amides, etc.
- Two of the radicals R a can also be a 3 to 4 with the atom M.
- Form a 6-membered ring for example by two radicals R a forming an alkylene form a chain in which one or more CH 2 groups can be replaced by 0 in ether function.
- R a can also mean custom ⁇ - or ⁇ -bonded complex ligands such as ethylene, allyl, butadiene, cyclopentadiene, mono- or polysubstituted cyclopentadienes such as methylcyclopentadiene or pentamethylcyclopentadiene, benzene, cyclohexadiene, cycloheptatriene, Cycloheptadiene, cyclooctatetraene, cyclooctatriene, cyclooctadiene, carbonyl, oxalato, cyano, isonitrile, fulminato-C, fulminato-O, cyanato, dinitrogen, ethylenediamine, diethylenetriamine, triethylenetetrain, ethylenediaminetetraacetate, isrocyano, pyrid , ⁇ -dipyridyl, trifluorophosphane, pho
- R b particularly preferably denotes hydrogen or methyl.
- R c represents hydrogen, -CC alkyl such as methyl, ethyl, propyl, isopropyl and n-butyl and the butyl isomers, phenyl, chlorine or an unsaturated hydrocarbon radical with 2 to 6 carbon atoms such as vinyl, allyl, methallyl, butenyl or Pentenyl.
- R 1 is hydrogen or Ci to C alkyl
- R 2 to R 6 independently of one another hydrogen, Ci- to C ⁇ 2 alkyl, Ce to Ci ⁇ -aryl, halogen or where two adjacent radicals together represent cyclic groups having 4 to 15 carbon atoms.
- Vinylaromatic compounds of the formula II are preferably used, in which
- R 1 means hydrogen
- R to R € represent hydrogen, C 1 -C 4 -alkyl, chlorine or phenyl or two adjacent radicals together represent cyclic groups containing 4 to 12 carbon atoms, so that compounds of the general formula II, for example, naphthalene derivatives or anthracene - derivatives.
- Styrene p-methylstyrene, p-chlorostyrene, 2, 4-dimethylstyrene, 4-vinylbiphenyl, 2-vinylnaphthalene or 9 -vinylanthracene.
- vinyl aromatic compounds can also be used, it being possible for one component to also carry further hydrocarbon radicals, such as vinyl groups, allyl groups, methallyl groups, butenyl or pentenyl groups, preferably vinyl groups on the phenyl ring. However, preferably only one vinyl aromatic compound is used.
- Particularly preferred vinyl aromatic compounds are styrene and p-methylstyrene.
- transition metal complexes of the II. To VIII. Subgroup preferably of the III. to VIII. Subgroup used. Complexes of the metals titanium, zirconium and hafnium are very particularly preferred.
- branching monomer block of the formula I already contains a transition metal M, in particular titanium, it can, depending on the concentration used, be used in addition to its function as a branching block and at the same time as catalyst component A.
- catalyst component A Metallocene complexes are preferred as catalyst component A). Those of the general formula III are particularly preferred
- R 7 to R 11 are hydrogen, C ** .- to Cio-alkyl, 5- to 7-membered cycloalkyl, which in turn can carry C ⁇ ⁇ to Cg-alkyl groups as substituents, C & - to Cis-aryl or
- Arylalkyl and, where appropriate, two adjacent radicals together can also represent cyclic groups having 4 to 15 carbon atoms, or Si (R 12 ) 3 ,
- M a metal of III. to VI. Subgroup of the Periodic Table of the Elements or a metal from the lanthanide series
- Z 1 to Z 5 are hydrogen, halogen, Ci- to Cio-alkyl, C ⁇ - bis
- Particularly preferred metallocene complexes of the general formula III are those in which
- M stands for a metal of subgroup IV of the Periodic Table of the Elements, ie for titanium, zirconium or hafnium, in particular for titanium
- Z 1 to Z 5 are C ⁇ to Cio-alkyl, C ⁇ ⁇ to Cio-alkoxy or halogen.
- Metallocene complexes such as those described in EP-A 584 646 can also be used. Mixtures of different metallocene complexes can also be used.
- Such complex compounds can be synthesized by methods known per se, the reaction of the appropriately substituted cyclic hydrocarbon anions with halides of titanium, zirconium, hafnium, vanadium, niobium or tantalum being preferred.
- the catalyst systems can contain open-chain or cyclic alumoxane compounds as compound B) forming metallocenium ions.
- open-chain or cyclic alumoxane compounds of the general formula IV or V are suitable
- R 13 is a C 1 -C 6 -alkyl group, preferably methyl or ethyl group and k is an integer from 5 to 30, preferably 10 to 25.
- oligomeric alumoxane compounds are usually prepared by reacting a solution of trialkyl aluminum with water and include in EP-A 284 708 and US-A 4,794,096.
- the oligomeric alumoxane compounds obtained are mixtures of different lengths, both linear and cyclic chain molecules, so that k is to be regarded as the mean.
- the alumoxane compounds can also be present in a mixture with other metal alkyls, preferably with aluminum alkyls. It has proven to be advantageous to use the metallocene complexes and the oligomeric alumoxane compound in amounts such that the atomic ratio between aluminum from the oligomeric alumoxane compound and the transition metal from the metallocene complexes is in the range from 10: 1 to 10 6 : 1, in particular is in the range from 10: 1 to 10: 1.
- Coordination complex compounds selected from the group consisting of strong, neutral Lewis acids, the ionic compounds with Lewis acid cations and the ionic compounds with Bronsted acids can also be used as cations as the metallocenium ion-forming compound B).
- M 1 is an element of III.
- Main group of the periodic table means, in particular B, Al or Ga, preferably B,
- Y is an element of I. to VI. Main group or the I. to VIII.
- Subgroup of the periodic table means 10
- Ci to Cio-cycloalkyl which can optionally be substituted with C 1 -C 10 -alkyl groups, halogen, C 1 -C 2 s -alkoxy, s- to C s -aryloxy, silyl or mercaptyl groups
- a represents integers from 1 to 6
- d corresponds to the difference a - z, but d is greater than or equal to 1.
- Carbonium cations, oxoniu cations and sulfonium cations as well as cationic transition metal complexes are particularly suitable.
- the triphenylmethyl cation, the silver cation and the 1, 1 '-dimethylferrocenyl cation should be mentioned in particular.
- non-coordinating counterions in particular boron compounds, as they are also mentioned in WO 91/09882, preferably tetrakis (pentafluorophenyl) borate.
- Ionic compounds with Bronsted acids as cations and preferably also non-coordinating counterions are mentioned in WO 93/3067, the preferred cation is N, N-dimethylanilinium.
- the molar ratio of boron from the compound forming the metallocenium ion to transition metal from the metallocene complex is in the range from 0.1: 1 to 10: 1, in particular in the range from 1: 1 to 5: 1.
- the catalyst system used in the process according to the invention can contain an aluminum compound as component C). This can e.g. through the general formula VIII
- R 14 to R 16 represent hydrogen, fluorine, chlorine, bromine, iodine or Ci to -C 2 alkyl, preferably Ci to Cg alkyl,
- R 14 to R 15 are preferably the same and represent C 1 -C 6 -alkyl such as methyl, ethyl, isobutyl or n-hexyl, R 16 preferably denotes hydrogen.
- Component C) is preferably present in the catalyst system in an amount of 1: 2000 to 1: 1, in particular 1: 800 to 1:10 (molar ratio of transition metal from III to Al from VIII).
- Aromatic hydrocarbons are usually used as solvents for the metallocene complexes, preferably with 6 to 20 carbon atoms, in particular xylenes, toluene and ethylbenzene and mixtures thereof.
- the metallocene complexes can be used unsupported or supported.
- Suitable carrier materials are, for example, silica gels, preferably those of the formula Si0 2 • bAl 2 0 3 , where b is a number in the range from 0 to 2, preferably 0 to 0.5; essentially aluminum silicates or silicon dioxide.
- the carriers preferably have a particle diameter in the range from 1 to 200 ⁇ m, in particular 30 to 80 ⁇ m. Products of this type are commercially available, for example as Silica Gel 332 from Grace.
- Other carriers include finely divided polyolefins, for example finely divided polypropylene or polyethylene, but also polyethylene glycol, polybutylene terephthalate, polyethylene terephthalate, polyvinyl alcohol, polystyrene, syndiotactic polystyrene, polybutadiene, polycarbonates or their copolymers.
- the molar ratio of transition metal catalyst A) to vinyl aromatic monomer is generally 1: 1000 to
- the invention further relates to a process for the preparation of the new star polymers, which can be carried out by observing the stated process conditions.
- a special embodiment of the method consists in carrying it out using a co-rotating, tightly intermeshing and thus self-cleaning twin-screw extruder, preferably in one stage.
- the reaction temperature is generally between -80 and 150 ° C, preferably between 0 ° and 120 ° C. However, it is also possible for a temperature gradient from 0 to 120 ° C. to be created around the reaction tube via temperature-controlled housing sheaths.
- the extruder can consist of several individual zones that can be tempered at different temperatures.
- the outside diameter of the co-rotating, preferably two-speed kneading and conveying elements of the twin-screw extruders is preferably in the range from 25 to 70 mm, in particular 30 to 58 mm.
- the free gap spaces between the extruder housing and the screw element are in the range from 0.2 to 0.8 mm, in particular from 0.3 to 0.5 mm.
- the screw speed can range from 3 to 500 revolutions per minute, preferably 5 to 30 revolutions per minute.
- the average residence time in the extruder can be 0.1 to 240 minutes, preferably 2 to 20 minutes.
- the average residence time in the extruder can be regulated via the number of housing blocks.
- the number of housing blocks is preferably in the range from 6 to 20, in particular from 8 to 12.
- 10 housing blocks are particularly preferably used, with back-degassing taking place in the first housing block, the starting materials being metered into the second, the housing blocks 3 to 8 being reaction housing blocks, the housing blocks 9 and 10 can be heated at a different temperature and the housing block 10 serves as a discharge housing.
- the process is preferably carried out in such a way that the vinylaromatic compound, the branching monomer unit, the metallocenium ion-forming compound B) and, if appropriate, the aluminum compound C) are mixed under an inert gas atmosphere and metered into the first housing block of the extruder.
- a solution or suspension of the transition metal complex A) can also be metered onto the first housing block (zone).
- Cyclic and acyclic hydrocarbons such as butanes, pentanes, hexanes or heptanes, as well as aromatic hydrocarbons, such as benzene, toluene or ethylbenzene, and oxygen-containing solvents are to be mentioned as solvents substances such as tetrahydrofuran, halogen-containing coal, .hydrogens such as dichloromethane or nitrogen-containing hydrocarbons such as N-methylpiperidine and mixtures thereof.
- the metered amount is preferably chosen such that 500 to 2000 g / h of the mixture of vinylaromatic compound, components B) and, if appropriate, C) are added, and 100 to 200 cm 3 / h of the solution or suspension of the metal complex.
- the polymerization is preferably carried out in the vinyl aromatic compound as the reaction medium, i.e. carried out in bulk.
- the process is technically simple to carry out, high conversions are achieved, and the risk of the extrusion outlet openings sticking or growing is low.
- a further preferred embodiment consists in that the reaction mixture containing, as components, the vinyl aromatic monomers, the branching monomer unit and the catalyst system from A) a transition metal complex from subgroup II to VIII, B) a cation-forming agent and C) optionally an aluminum compound , activated by premixing and then poly erized in a mixing kneader.
- the premixing is preferably carried out at a temperature at which the reaction mixture is still liquid and the polymerization does not start. Depending on the components used for the reaction mixture, this temperature is in a range from -30 to +140, preferably from 0 to 70 and particularly preferably from 15 to 30 ° C. Furthermore, in the activation according to the invention, the premixing is preferably carried out in such a way that the residence time and the temperature are chosen such that, in addition to the onset of the polymerization reaction, there is also no damage to the catalyst despite thorough mixing for the activation.
- the activation by premixing the reaction mixture is advantageously carried out shortly or immediately before the polymerization reaction.
- the period between activation by premixing and polymerization is 0 to 60, preferably 0.01 to 45 and particularly preferably 0.1 to 30 minutes, it being preferred for the premixing to take place essentially without any reaction occurring.
- the process is advantageously carried out without solvents.
- the monomers used initially act as solvents. It is also advantageous to carry out the process in an inert gas atmosphere, for example made of nitrogen or argon, if possible to exclude moisture. Hydrogen can also be metered into the inert gas stream.
- the premixing is preferably carried out so that there is no reaction. It is also advantageous that the polymers are obtained in such a way that they can be processed further, preferably extruded, essentially immediately after the polymerization. This is preferably the case if the polymerization is driven to high yields in the process and, accordingly, the polymer has a low residual monomer content. This residual monomer content is below 10, preferably below 5 and particularly preferably below 3% by weight, based on the weight of the polymer. The residual monomer content still remaining in the polymer can be removed, for example, by evaporation or by applying a vacuum.
- the process according to the invention is preferably carried out in a mixing-kneading reactor with an extruder connected to it, without having to carry out further work-up steps, for example distilling off larger amounts of residual monomer, which occur in particular in the case of low conversions.
- the method thus allows the polymer to be further processed essentially immediately after its production.
- star polymers obtainable in this way are suitable for the production of fibers, for example monofilaments, foils and moldings, in particular for molding compositions produced in injection molding in electrical or high-temperature-resistant applications. Due to their high olefinic end groups, they can also be modified by grafting, crosslinking or other polymer-analogous reactions and processed alone or in blends with thermoplastic polymers, rubbers, fillers, etc.
- Examples 1-8 below illustrate the invention. Their properties are compared in Table 1 with syndiotactic polystyrene VI.
- Tetrakis (4-vinylbenzyl) silane and tetrakis (4 -vinylbenzyl) titanium were obtained by Grignard linking 4-chloromethylstyrene with silicon tetrachloride and titanium tetrachloride, respectively.
- the molar masses and molar mass distribution were determined by means of high-temperature GPC with 1,2,4-trichlorobenzene as solvent at 140 ° C. The calibration was carried out using narrowly distributed polystyrene standards.
- melt viscosity index was according to DIN 53 735 at 290 ° C. 10 kg weight determined.
- the olefinic end groups were determined by 13 C-NMR spectroscopy.
- Example 1 was repeated with higher proportions of tetrakis (4-vinylbenzyl) silane and the molar ratios styrene / tetrakis (4 -vinylbenzyl) silane from Table 1.
- Example 1 was repeated without tetrakis (4-vinylbenzyl) silane.
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- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Inorganic Chemistry (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Artificial Filaments (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
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Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002263994A CA2263994A1 (en) | 1996-08-26 | 1997-08-13 | Star polymers and process for producing the same |
BR9711234A BR9711234A (pt) | 1996-08-26 | 1997-08-13 | Pol¡mero estrela processos para sua prepara-Æo e utiliza-Æo composto de tit nio e fibra pelicula ou pe-a moldada |
AU41185/97A AU4118597A (en) | 1996-08-26 | 1997-08-13 | Star polymers and process for producing the same |
JP10511227A JP2000517358A (ja) | 1996-08-26 | 1997-08-13 | スターポリマーおよびその製造方法 |
EP97938901A EP0920463A1 (de) | 1996-08-26 | 1997-08-13 | Sternpolymere und verfahren zu deren herstellung |
US09/242,731 US6353070B1 (en) | 1996-08-26 | 1997-08-13 | Star polymers and process for producing the same |
Applications Claiming Priority (2)
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DE19634375.5 | 1996-08-26 | ||
DE19634375 | 1996-08-26 |
Related Child Applications (2)
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US09/242,731 A-371-Of-International US6353070B1 (en) | 1996-08-26 | 1997-08-13 | Star polymers and process for producing the same |
US09/773,043 Division US6303806B2 (en) | 1996-08-26 | 2001-01-31 | Star polymers, and their preparation |
Publications (1)
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WO1998008881A1 true WO1998008881A1 (de) | 1998-03-05 |
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PCT/EP1997/004432 WO1998008881A1 (de) | 1996-08-26 | 1997-08-13 | Sternpolymere und verfahren zu deren herstellung |
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US (2) | US6353070B1 (de) |
EP (1) | EP0920463A1 (de) |
JP (1) | JP2000517358A (de) |
KR (1) | KR20000035856A (de) |
CN (1) | CN1228791A (de) |
AU (1) | AU4118597A (de) |
BR (1) | BR9711234A (de) |
CA (1) | CA2263994A1 (de) |
TR (1) | TR199900388T2 (de) |
TW (1) | TW438825B (de) |
WO (1) | WO1998008881A1 (de) |
ZA (1) | ZA977594B (de) |
Cited By (6)
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WO1999020449A1 (en) * | 1997-10-17 | 1999-04-29 | The Dow Chemical Company | Injection-molded articles made from long chain branched syndiotactic monovinylidene aromatic polymers |
US5965682A (en) * | 1997-05-30 | 1999-10-12 | The Dow Chemical Company | Fibers made from long chain branched syndiotactic vinyl aromatic polymers |
US5990256A (en) * | 1997-05-30 | 1999-11-23 | The Dow Chemical Company | Long chain branched syndiotactic vinyl aromatic polymers |
EP0979842A1 (de) * | 1998-08-13 | 2000-02-16 | Basf Aktiengesellschaft | Thermoplastische Formmassen auf der Basis von Sternpolymeren, thermoplastischen Elastomeren und Polyarylenethern |
WO2003065312A1 (en) | 2002-01-28 | 2003-08-07 | Modul-System Sweden Ab | A method for control of parked vehicles |
CN100358903C (zh) * | 2004-09-02 | 2008-01-02 | 罗门哈斯电子材料有限公司 | 方法 |
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EP1219649A4 (de) * | 2000-04-19 | 2003-07-23 | Idemitsu Petrochemical Co | Verfahren zur herstellung von funktionalem styrolcopolymer und funktionales styrolcopolymer |
US7531588B2 (en) * | 2004-07-30 | 2009-05-12 | Momentive Performance Materials Inc. | Silane compositions, processes for their preparation and rubber compositions containing same |
US7928258B2 (en) | 2004-08-20 | 2011-04-19 | Momentive Performance Materials Inc. | Cyclic diol-derived blocked mercaptofunctional silane compositions |
US7718819B2 (en) * | 2006-02-21 | 2010-05-18 | Momentive Performance Materials Inc. | Process for making organofunctional silanes and mixtures thereof |
US7510670B2 (en) * | 2006-02-21 | 2009-03-31 | Momentive Performance Materials Inc. | Free flowing filler composition based on organofunctional silane |
US7504456B2 (en) * | 2006-02-21 | 2009-03-17 | Momentive Performance Materials Inc. | Rubber composition containing organofunctional silane |
US7919650B2 (en) * | 2006-02-21 | 2011-04-05 | Momentive Performance Materials Inc. | Organofunctional silanes and their mixtures |
US8097744B2 (en) * | 2006-08-14 | 2012-01-17 | Momentive Performance Materials Inc. | Free flowing filler composition comprising mercapto-functional silane |
US8008519B2 (en) | 2006-08-14 | 2011-08-30 | Momentive Performance Materials Inc. | Process for making mercapto-functional silane |
US7550540B2 (en) * | 2006-08-14 | 2009-06-23 | Momentive Performance Materials Inc. | Rubber composition and articles therefrom both comprising mercapto-functional silane |
US7368584B2 (en) * | 2006-08-14 | 2008-05-06 | Momentive Performance Materials Inc. | Mercapto-functional silane |
CN101029134B (zh) * | 2007-03-15 | 2010-11-17 | 复旦大学 | 以离子型铱配合物为核的星状聚合物及其合成方法和应用 |
US7816435B2 (en) * | 2007-10-31 | 2010-10-19 | Momentive Performance Materials Inc. | Halo-functional silane, process for its preparation, rubber composition containing same and articles manufactured therefrom |
WO2022254902A1 (ja) * | 2021-06-04 | 2022-12-08 | Agc株式会社 | 新規な有機ケイ素化合物、新規な架橋剤、硬化性組成物、プリプレグ、積層体、金属張積層板および配線基板 |
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- 1997-08-13 BR BR9711234A patent/BR9711234A/pt unknown
- 1997-08-13 EP EP97938901A patent/EP0920463A1/de not_active Withdrawn
- 1997-08-13 TR TR1999/00388T patent/TR199900388T2/xx unknown
- 1997-08-13 AU AU41185/97A patent/AU4118597A/en not_active Abandoned
- 1997-08-13 US US09/242,731 patent/US6353070B1/en not_active Expired - Fee Related
- 1997-08-13 CN CN97197476A patent/CN1228791A/zh active Pending
- 1997-08-13 KR KR1019997001550A patent/KR20000035856A/ko not_active Application Discontinuation
- 1997-08-13 CA CA002263994A patent/CA2263994A1/en not_active Abandoned
- 1997-08-13 JP JP10511227A patent/JP2000517358A/ja active Pending
- 1997-08-25 TW TW086112188A patent/TW438825B/zh not_active IP Right Cessation
- 1997-08-25 ZA ZA977594A patent/ZA977594B/xx unknown
-
2001
- 2001-01-31 US US09/773,043 patent/US6303806B2/en not_active Expired - Fee Related
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EP0979842A1 (de) * | 1998-08-13 | 2000-02-16 | Basf Aktiengesellschaft | Thermoplastische Formmassen auf der Basis von Sternpolymeren, thermoplastischen Elastomeren und Polyarylenethern |
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CN100358903C (zh) * | 2004-09-02 | 2008-01-02 | 罗门哈斯电子材料有限公司 | 方法 |
Also Published As
Publication number | Publication date |
---|---|
TR199900388T2 (xx) | 1999-04-21 |
TW438825B (en) | 2001-06-07 |
BR9711234A (pt) | 1999-08-17 |
AU4118597A (en) | 1998-03-19 |
JP2000517358A (ja) | 2000-12-26 |
CN1228791A (zh) | 1999-09-15 |
EP0920463A1 (de) | 1999-06-09 |
KR20000035856A (ko) | 2000-06-26 |
US6303806B2 (en) | 2001-10-16 |
US6353070B1 (en) | 2002-03-05 |
ZA977594B (en) | 1999-02-25 |
US20010009966A1 (en) | 2001-07-26 |
CA2263994A1 (en) | 1998-03-05 |
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