KR102398321B1 - 초저온 속경화성 에폭시 수지의 제조방법 및 이에 의해 제조된 수지를 포함하는 분체도료용 조성물 - Google Patents
초저온 속경화성 에폭시 수지의 제조방법 및 이에 의해 제조된 수지를 포함하는 분체도료용 조성물 Download PDFInfo
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- KR102398321B1 KR102398321B1 KR1020200132383A KR20200132383A KR102398321B1 KR 102398321 B1 KR102398321 B1 KR 102398321B1 KR 1020200132383 A KR1020200132383 A KR 1020200132383A KR 20200132383 A KR20200132383 A KR 20200132383A KR 102398321 B1 KR102398321 B1 KR 102398321B1
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- epoxy resin
- bisphenol
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- powder coating
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- 239000003822 epoxy resin Substances 0.000 title claims abstract description 79
- 229920000647 polyepoxide Polymers 0.000 title claims abstract description 79
- 238000000576 coating method Methods 0.000 title claims abstract description 64
- 239000000843 powder Substances 0.000 title claims abstract description 60
- 239000011248 coating agent Substances 0.000 title claims abstract description 53
- 239000000203 mixture Substances 0.000 title claims abstract description 24
- 229920005989 resin Polymers 0.000 title claims abstract description 17
- 239000011347 resin Substances 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims description 21
- 238000004519 manufacturing process Methods 0.000 claims abstract description 14
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims description 46
- 239000003795 chemical substances by application Substances 0.000 claims description 34
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 23
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 20
- 229940106691 bisphenol a Drugs 0.000 claims description 16
- 229930185605 Bisphenol Natural products 0.000 claims description 14
- 150000005846 sugar alcohols Polymers 0.000 claims description 13
- 150000002762 monocarboxylic acid derivatives Chemical class 0.000 claims description 12
- 125000001931 aliphatic group Chemical group 0.000 claims description 11
- 229920000728 polyester Polymers 0.000 claims description 10
- 230000002194 synthesizing effect Effects 0.000 claims description 10
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 9
- XQXPVVBIMDBYFF-UHFFFAOYSA-N 4-hydroxyphenylacetic acid Chemical compound OC(=O)CC1=CC=C(O)C=C1 XQXPVVBIMDBYFF-UHFFFAOYSA-N 0.000 claims description 8
- PXKLMJQFEQBVLD-UHFFFAOYSA-N bisphenol F Chemical compound C1=CC(O)=CC=C1CC1=CC=C(O)C=C1 PXKLMJQFEQBVLD-UHFFFAOYSA-N 0.000 claims description 8
- 239000004593 Epoxy Substances 0.000 claims description 7
- FJKROLUGYXJWQN-UHFFFAOYSA-N 4-hydroxybenzoic acid Chemical compound OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 claims description 6
- 239000002518 antifoaming agent Substances 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 5
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 claims description 5
- 239000000049 pigment Substances 0.000 claims description 5
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 claims description 4
- 125000002723 alicyclic group Chemical group 0.000 claims description 4
- 125000000217 alkyl group Chemical group 0.000 claims description 4
- 125000004432 carbon atom Chemical group C* 0.000 claims description 4
- PTBDIHRZYDMNKB-UHFFFAOYSA-M 3-hydroxy-2-(hydroxymethyl)-2-methylpropanoate Chemical compound OCC(C)(CO)C([O-])=O PTBDIHRZYDMNKB-UHFFFAOYSA-M 0.000 claims description 3
- 229940090248 4-hydroxybenzoic acid Drugs 0.000 claims description 3
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 claims description 3
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 claims description 3
- VKOUCJUTMGHNOR-UHFFFAOYSA-N Diphenolic acid Chemical compound C=1C=C(O)C=CC=1C(CCC(O)=O)(C)C1=CC=C(O)C=C1 VKOUCJUTMGHNOR-UHFFFAOYSA-N 0.000 claims description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical group CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- 150000002148 esters Chemical class 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 239000004611 light stabiliser Substances 0.000 claims description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 3
- 150000007524 organic acids Chemical class 0.000 claims description 3
- 239000000600 sorbitol Substances 0.000 claims description 3
- QXJQHYBHAIHNGG-UHFFFAOYSA-N trimethylolethane Chemical compound OCC(C)(CO)CO QXJQHYBHAIHNGG-UHFFFAOYSA-N 0.000 claims description 3
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical compound NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 claims description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims 1
- 150000002431 hydrogen Chemical class 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 9
- 238000001723 curing Methods 0.000 description 46
- 230000015572 biosynthetic process Effects 0.000 description 19
- 238000003786 synthesis reaction Methods 0.000 description 18
- 239000010408 film Substances 0.000 description 13
- 230000000704 physical effect Effects 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 11
- 239000000126 substance Substances 0.000 description 9
- 239000008199 coating composition Substances 0.000 description 8
- 238000013035 low temperature curing Methods 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 6
- 239000003973 paint Substances 0.000 description 6
- 238000005259 measurement Methods 0.000 description 5
- ISAOCJYIOMOJEB-UHFFFAOYSA-N benzoin Chemical compound C=1C=CC=CC=1C(O)C(=O)C1=CC=CC=C1 ISAOCJYIOMOJEB-UHFFFAOYSA-N 0.000 description 4
- 239000011261 inert gas Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000004615 ingredient Substances 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 235000000126 Styrax benzoin Nutrition 0.000 description 2
- 244000028419 Styrax benzoin Species 0.000 description 2
- 235000008411 Sumatra benzointree Nutrition 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 238000012644 addition polymerization Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 229960002130 benzoin Drugs 0.000 description 2
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 239000007809 chemical reaction catalyst Substances 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 235000019382 gum benzoic Nutrition 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 229920001225 polyester resin Polymers 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 239000012855 volatile organic compound Substances 0.000 description 2
- OUPZKGBUJRBPGC-UHFFFAOYSA-N 1,3,5-tris(oxiran-2-ylmethyl)-1,3,5-triazinane-2,4,6-trione Chemical compound O=C1N(CC2OC2)C(=O)N(CC2OC2)C(=O)N1CC1CO1 OUPZKGBUJRBPGC-UHFFFAOYSA-N 0.000 description 1
- HMUNWXXNJPVALC-UHFFFAOYSA-N 1-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)C(CN1CC2=C(CC1)NN=N2)=O HMUNWXXNJPVALC-UHFFFAOYSA-N 0.000 description 1
- VWVRASTUFJRTHW-UHFFFAOYSA-N 2-[3-(azetidin-3-yloxy)-4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]pyrazol-1-yl]-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound O=C(CN1C=C(C(OC2CNC2)=N1)C1=CN=C(NC2CC3=C(C2)C=CC=C3)N=C1)N1CCC2=C(C1)N=NN2 VWVRASTUFJRTHW-UHFFFAOYSA-N 0.000 description 1
- LXBGSDVWAMZHDD-UHFFFAOYSA-N 2-methyl-1h-imidazole Chemical compound CC1=NC=CN1 LXBGSDVWAMZHDD-UHFFFAOYSA-N 0.000 description 1
- 239000004129 EU approved improving agent Substances 0.000 description 1
- 239000004606 Fillers/Extenders Substances 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- JQTFRJBBUHWNME-UHFFFAOYSA-N [I+].C(C)[P+](C1=CC=CC=C1)(C1=CC=CC=C1)C1=CC=CC=C1 Chemical compound [I+].C(C)[P+](C1=CC=CC=C1)(C1=CC=CC=C1)C1=CC=CC=C1 JQTFRJBBUHWNME-UHFFFAOYSA-N 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000002612 dispersion medium Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229940082150 encore Drugs 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011094 fiberboard Substances 0.000 description 1
- 238000005227 gel permeation chromatography Methods 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000004850 liquid epoxy resins (LERs) Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 239000002952 polymeric resin Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 239000012463 white pigment Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/03—Powdery paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Paints Or Removers (AREA)
Abstract
Description
항목 | 합성예 (g) | ||||
2 | 3 | 4 | 5 | 6 | |
당량 [g/eq] | 646.3 | 507 | 607.8 | 691 | 652.7 |
용융 점도 [cps] | 3079 | 1750 | 1450 | 4317 | - |
연화점 [℃ | 85.0 | 71.9 | 75.7 | 88.9 | 96.3 |
수평균분자량[Mn] | 1608 | 1238 | 1197 | 1892 | 2189 |
성분 | 실시예 (g) | |||||
1 | 2 | 3 | 4 | 5 | 6 | |
합성예2 | 7.17 | |||||
합성예3 | 8.00 | |||||
합성예4 | 8.88 | |||||
합성예5 | 9.45 | 14.55 | ||||
합성예6 | 14.38 | |||||
KD-410J | 2.83 | 5.45 | 5.62 | |||
HC-5501 | 12.00 | 11.12 | 10.55 | |||
2-MI* | 0.1 | |||||
*2-메틸이미다졸 | ||||||
겔 타임 | 실시예 (분'초”) | |||||
1 | 2 | 3 | 4 | 5 | 6 | |
120℃ | 1'48” | 3'42” | 6'53” | 4'47” | 3'32” | 3'08” |
110℃ | 2'27” | 5'17” | 4'21” |
성분 | 실시예 (g) | 비교예(g) | ||
7 | 8 | 1 | 2 | |
합성예2 의 에폭시수지 |
7.23 | 4.592 | ||
KD-242G | 7.293 | 4.671 | ||
KD-410J | 2.77 | 2.707 | ||
HC-5602 | 5.408 | 5.329 | ||
2-MI | 0.1 | 0.1 | 0.1 | 0.1 |
겔 타임 | 실시예 (분'초”) | |||
150℃ | 41.16” | 52.94” | 1'12” | 1'30” |
130℃ | 1'11” | 1'29” | 2'24” | 2'54” |
120℃ | 1'46” | 2'11” | 2'35” | 3'57” |
110℃ | 2'20” | 4'22” |
성분 | 실시예 (g) | 비교예 (g) | ||
9 | 10 | 3 | 4 | |
합성예2 의 에폭시수지 | 216.9 | 137.8 | ||
KD-242G | 217.7 | 141 | ||
KD-410J | 83.1 | 82.3 | ||
HC-5602 | 162.2 | 159 | ||
Benzoin | 2 | 2 | 2 | 2 |
TiO2 | 150 | 150 | 150 | 150 |
BaSO4 | 48 | 48 | 48 | 48 |
2-MI | 3 | 3 | 3 | 3 |
물성 | 실시예 | ||||||
9-1 | 10-1 | 9-2 | 10-2 | 9-3 | 10-3 | ||
경화조건 | 110℃분 | 120℃분 | 130℃분 | ||||
외관 | 핀홀 | 양호 | 양호 | 양호 | 양호 | 양호 | 양호 |
광택 | 90 | 37 | 109 | 61 | 106 | 90 | |
기계적 물성 |
부착성 | 100/100 | 100/100 | 100/100 | 100/100 | 100/100 | 100/100 |
유연성 | 7.2 mm | 1.05 mm | 8.89 mm | 7.84 mm | 9.34 mm | 9.52 mm | |
충격성 | 500g / 50cm | 500g / 50cm | > 500g / 100cm | 500g / 55cm | > 500g / 100cm | > 500g / 100cm | |
경도 | F | HB | F | HB | F | HB |
물성 | 비교예 | ||||||||
3-1 | 4-1 | 3-2 | 4-2 | 3-3 | 4-3 | 3-4 | 4-4 | ||
경화조건 | 110℃분 | 120℃분 | 130℃분 | 180℃분 | |||||
외관 | 핀홀 | 양호 | 양호 | 양호 | 양호 | 양호 | 양호 | 양호 | 양호 |
광택 | 120 | 94.1 | 120 | 88.2 | 120 | 98.4 | 116 | 97.8 | |
기계적 물성 |
부착성 | 100/100 | 70/100 | 100/100 | 100/100 | 100/100 | 100/100 | 100/100 | 100/100 |
유연성 | 0.4 mm | 0.69 mm | 0.78 mm | 0.97 mm | 2.76 mm | 8.54 mm | 8.02 mm | 8.62 mm | |
충격성 | 500g/10cm | 500g/10cm | 500g/15cm | 500g/30cm | 500g/30cm | 500g/30cm | 500g/50cm | 500g/100cm | |
경도 | 2B | HB | HB | HB | HB | F | HB | HB |
Claims (10)
- 저온경화성 에폭시 수지의 제조방법으로서,
페놀그룹을 1개 이상 포함하는 유기산과 3개 이상의 하이드록시 그룹을 포함하는 알코올을 사용하여 올리고머를 합성하고,
하기 화학식 2의 비스페놀형 에폭시 수지에 상기 합성된 올리고머와 비스페놀계 수지를 반응시켜 된 하기 화학식 1의 저온경화성 에폭시 수지를 제조하는 방법.
(화학식 1)
(화학식 2)
(식 중, n은 0.1 내지 30의 실수이고, R1 및 R2는 독립적으로 수소, 치환 또는 비치환된 탄소원자 1내지 5의 알킬기이고, X는 1개 이상의 하이드록시기를 포함한 에스터 결합 또는 CR1R2 그룹으로서 X의 20-30%은 하이드록시기를 포함한 에스터 결합이다) - 1항에 있어서, 상기 비스페놀형 에폭시 수지는 에폭시 당량이 150-300 g/eq 이며, 상기 비스페놀계 수지는 비스페놀-A 또는/및 비스페놀-F 인 것을 특징으로 하는 저온경화성 에폭시 수지를 제조하는 방법.
- 1항에 있어서, 상기 비스페놀형 에폭시 수지는 60-80 중량부이고 상기 합성된 올리고머는 15-30 중량부이고, 상기 비스페놀계 수지는 5-15 중량부이며, 상기 에폭시 수지는 당량이 400-1000 g/eq 인 저온경화성 에폭시 수지를 제조하는 방법.
- 1항에 있어서, 상기 화학식 1 및 2의 에폭시 수지의 R1 및 R2는 수소 또는 메틸이고, n은 1 내지 15의 실수인 것을 특징으로 하는 저온경화성 에폭시 수지를 제조하는 방법.
- 1항에 있어서, 상기 올리고머는 페놀그룹을 포함하는 모노카르복시산 또는 그 유도체와 하이드록시기가 3-4개인 지방족 또는 지환족 다가 알코올을 반응시켜서 된 것임을 특징으로 하는 저온경화성 에폭시 수지를 제조하는 방법.
- 5항에 있어서, 상기 페놀 그룹을 포함하는 모노카르복시산 또는 그 유도체 65-75 중량부와 상기 하이드록시기가 3-4개인 지방족 또는 지환족 다가 알코올 25-35 중량부의 비율로 사용되는 것을 특징으로 하는 저온경화성 에폭시 수지를 제조하는 방법.
- 제 5항 또는 6항에 있어서, 상기 페놀 그룹을 포함하는 모노카르복시산 또는 그 유도체는 4-하이드록시페닐아세트산, 디 페놀산, 4-하이드록시 벤조인 산 및 이들의 조합으로 구성되는 군에서 선택된 것이고, 상기 지방족 다가 알코올은 트리메틸올프로판, 트리메틸올에탄, 글리세롤, 3-하이드록시-2-(하이드록시메틸)-2-메틸프로파노에이트, 솔비톨 및 이들의 조합으로 구성되는 군에서 선택된 것임을 특징으로 하는 저온경화성 에폭시 수지를 제조하는 방법
- 제 5항 또는 6항에 있어서, 상기 올리고머의 산가는 0-4 mg KOH/g 이며, 수평균 분자량(Mn)은 500-1500인 것을 특징으로 하는 저온경화성 에폭시 수지를 제조하는 방법.
- 제 1항 내지 6항중 어느 한 항에 기재된 방법에 의해 제조된 에폭시수지 100중량부에 대해 페놀릭계 경화제, 2-시아노구아니딘 또는 폴리에스테르계 경화제 2 내지 200중량부를 포함함을 특징으로 하는 분체도료용 조성물.
- 제 9항에 있어서, 안료, 충진제, 광안정제, 경화촉진제, 흐름성 개선제 및 탈포제로 이루어지는 군으로부터 선택된 하나 이상을 더 포함하는 것을 특징으로 하는 분체도료용 조성물.
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