KR0158535B1 - Coating composition for painted steel sheet back side - Google Patents
Coating composition for painted steel sheet back side Download PDFInfo
- Publication number
- KR0158535B1 KR0158535B1 KR1019950040844A KR19950040844A KR0158535B1 KR 0158535 B1 KR0158535 B1 KR 0158535B1 KR 1019950040844 A KR1019950040844 A KR 1019950040844A KR 19950040844 A KR19950040844 A KR 19950040844A KR 0158535 B1 KR0158535 B1 KR 0158535B1
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- South Korea
- Prior art keywords
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- resin
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- epoxy resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 22
- 239000010959 steel Substances 0.000 title claims abstract description 22
- 239000008199 coating composition Substances 0.000 title claims abstract description 19
- 239000003822 epoxy resin Substances 0.000 claims abstract description 32
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 32
- 229920003180 amino resin Polymers 0.000 claims abstract description 24
- 229920001225 polyester resin Polymers 0.000 claims abstract description 24
- 239000004645 polyester resin Substances 0.000 claims abstract description 23
- 239000000203 mixture Substances 0.000 claims abstract description 20
- 229920005862 polyol Polymers 0.000 claims abstract description 14
- 150000003077 polyols Chemical class 0.000 claims abstract description 14
- -1 polyethylene Polymers 0.000 claims abstract description 12
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 11
- 239000000049 pigment Substances 0.000 claims abstract description 9
- 239000003054 catalyst Substances 0.000 claims abstract description 6
- 239000003960 organic solvent Substances 0.000 claims abstract description 6
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 6
- 229920000877 Melamine resin Polymers 0.000 claims description 6
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 6
- GZCGUPFRVQAUEE-SLPGGIOYSA-N aldehydo-D-glucose Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C=O GZCGUPFRVQAUEE-SLPGGIOYSA-N 0.000 claims description 6
- 150000001412 amines Chemical class 0.000 claims description 6
- 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 6
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims description 6
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 5
- 229920000570 polyether Polymers 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 5
- PUPZLCDOIYMWBV-UHFFFAOYSA-N (+/-)-1,3-Butanediol Chemical compound CC(O)CCO PUPZLCDOIYMWBV-UHFFFAOYSA-N 0.000 claims description 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 4
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 claims description 4
- PXKLMJQFEQBVLD-UHFFFAOYSA-N bisphenol F Chemical compound C1=CC(O)=CC=C1CC1=CC=C(O)C=C1 PXKLMJQFEQBVLD-UHFFFAOYSA-N 0.000 claims description 4
- IVJISJACKSSFGE-UHFFFAOYSA-N formaldehyde;1,3,5-triazine-2,4,6-triamine Chemical class O=C.NC1=NC(N)=NC(N)=N1 IVJISJACKSSFGE-UHFFFAOYSA-N 0.000 claims description 4
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 claims description 4
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 claims description 4
- UWJJYHHHVWZFEP-UHFFFAOYSA-N pentane-1,1-diol Chemical compound CCCCC(O)O UWJJYHHHVWZFEP-UHFFFAOYSA-N 0.000 claims description 4
- 239000004593 Epoxy Substances 0.000 claims description 3
- 125000004106 butoxy group Chemical group [*]OC([H])([H])C([H])([H])C(C([H])([H])[H])([H])[H] 0.000 claims description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 3
- 229940058015 1,3-butylene glycol Drugs 0.000 claims description 2
- TXBCBTDQIULDIA-UHFFFAOYSA-N 2-[[3-hydroxy-2,2-bis(hydroxymethyl)propoxy]methyl]-2-(hydroxymethyl)propane-1,3-diol Chemical compound OCC(CO)(CO)COCC(CO)(CO)CO TXBCBTDQIULDIA-UHFFFAOYSA-N 0.000 claims description 2
- LGRFSURHDFAFJT-UHFFFAOYSA-N Phthalic anhydride Natural products C1=CC=C2C(=O)OC(=O)C2=C1 LGRFSURHDFAFJT-UHFFFAOYSA-N 0.000 claims description 2
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 claims description 2
- 229920001807 Urea-formaldehyde Polymers 0.000 claims description 2
- 235000019437 butane-1,3-diol Nutrition 0.000 claims description 2
- JHIWVOJDXOSYLW-UHFFFAOYSA-N butyl 2,2-difluorocyclopropane-1-carboxylate Chemical compound CCCCOC(=O)C1CC1(F)F JHIWVOJDXOSYLW-UHFFFAOYSA-N 0.000 claims description 2
- 235000011187 glycerol Nutrition 0.000 claims description 2
- XXMIOPMDWAUFGU-UHFFFAOYSA-N hexane-1,6-diol Chemical compound OCCCCCCO XXMIOPMDWAUFGU-UHFFFAOYSA-N 0.000 claims description 2
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 claims description 2
- 125000000951 phenoxy group Chemical group [H]C1=C([H])C([H])=C(O*)C([H])=C1[H] 0.000 claims description 2
- 229920006395 saturated elastomer Polymers 0.000 claims description 2
- QXJQHYBHAIHNGG-UHFFFAOYSA-N trimethylolethane Chemical compound OCC(C)(CO)CO QXJQHYBHAIHNGG-UHFFFAOYSA-N 0.000 claims description 2
- 150000002148 esters Chemical class 0.000 claims 1
- 239000002904 solvent Substances 0.000 abstract description 14
- 239000004698 Polyethylene Substances 0.000 abstract description 11
- 229920000573 polyethylene Polymers 0.000 abstract description 11
- 238000009499 grossing Methods 0.000 abstract description 2
- 238000000576 coating method Methods 0.000 description 19
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 18
- 239000011248 coating agent Substances 0.000 description 18
- 239000003973 paint Substances 0.000 description 17
- 229910000019 calcium carbonate Inorganic materials 0.000 description 9
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- 239000011230 binding agent Substances 0.000 description 6
- 230000000704 physical effect Effects 0.000 description 6
- 239000000454 talc Substances 0.000 description 6
- 229910052623 talc Inorganic materials 0.000 description 6
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 5
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- ZXEKIIBDNHEJCQ-UHFFFAOYSA-N isobutanol Chemical compound CC(C)CO ZXEKIIBDNHEJCQ-UHFFFAOYSA-N 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- SVONRAPFKPVNKG-UHFFFAOYSA-N 2-ethoxyethyl acetate Chemical compound CCOCCOC(C)=O SVONRAPFKPVNKG-UHFFFAOYSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000011737 fluorine Substances 0.000 description 3
- 229910052731 fluorine Inorganic materials 0.000 description 3
- 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 description 3
- 239000000463 material Substances 0.000 description 3
- NVKTUNLPFJHLCG-UHFFFAOYSA-N strontium chromate Chemical compound [Sr+2].[O-][Cr]([O-])(=O)=O NVKTUNLPFJHLCG-UHFFFAOYSA-N 0.000 description 3
- 239000008096 xylene Substances 0.000 description 3
- QBDAFARLDLCWAT-UHFFFAOYSA-N 2,3-dihydropyran-6-one Chemical compound O=C1OCCC=C1 QBDAFARLDLCWAT-UHFFFAOYSA-N 0.000 description 2
- ZNQVEEAIQZEUHB-UHFFFAOYSA-N 2-ethoxyethanol Chemical compound CCOCCO ZNQVEEAIQZEUHB-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- 229920006243 acrylic copolymer Polymers 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 239000000440 bentonite Substances 0.000 description 2
- 229910000278 bentonite Inorganic materials 0.000 description 2
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 2
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 2
- XLLIQLLCWZCATF-UHFFFAOYSA-N ethylene glycol monomethyl ether acetate Natural products COCCOC(C)=O XLLIQLLCWZCATF-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 125000001424 substituent group Chemical group 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 1
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 description 1
- NQBXSWAWVZHKBZ-UHFFFAOYSA-N 2-butoxyethyl acetate Chemical compound CCCCOCCOC(C)=O NQBXSWAWVZHKBZ-UHFFFAOYSA-N 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 1
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000004844 aliphatic epoxy resin Substances 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000007761 roller coating Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
Classifications
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- 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
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/22—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes
- B05D7/222—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes of pipes
-
- 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
- C09D161/00—Coating compositions based on condensation polymers of aldehydes or ketones; Coating compositions based on derivatives of such polymers
- C09D161/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C09D161/22—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds
- C09D161/24—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds with urea or thiourea
-
- 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
- C09D161/00—Coating compositions based on condensation polymers of aldehydes or ketones; Coating compositions based on derivatives of such polymers
- C09D161/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C09D161/26—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds
- C09D161/28—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds with melamine
-
- 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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Paints Or Removers (AREA)
Abstract
폴리에스테르계 수지 10-50 중량부, 아미노계 수지 0.1-30 중량부, 에폭시계 수지 0.1-30 중량부, 안료 0.1-30 중량부, 침강방지제 및 평활제 0.1-7 중량부, 경화촉매 0.1-2 중량부, 폴리올 0.1-10 중량부 및 유기용제를 10-50 중량부로 구성된 도장 강판 이면용 피막 조성물이 개시되어 있다. 본 발명의 조성물은 광범위한 온도에서 도장 강판 이면의 스티로폴 및 폴리에틸렌 쉬트 부착성, 가공성, 내용제성 및 경도가 모두 우수하므로 산업적으로 매우 유용하다.10-50 parts by weight of polyester resin, 0.1-30 parts by weight of amino resin, 0.1-30 parts by weight of epoxy resin, 0.1-30 parts by weight of pigment, 0.1-7 parts by weight of antisettling agent and smoothing agent, 0.1-hardening catalyst The coating composition for back surface of the coated steel plate which consists of 2 weight part, 0.1-10 weight part of polyols, and 10-50 weight part of organic solvents is disclosed. The composition of the present invention is very industrially useful because of its excellent styropol and polyethylene sheet adhesion, processability, solvent resistance and hardness at the back of the coated steel sheet at a wide range of temperatures.
Description
본 발명은 보통 도장 강판이라고 부르는 철판의 이면에 도장하는 피막 조성물에 관한 것으로서, 특히, 광범위한 온도 범위에서 부착성이 우수한 피막 조성물에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating composition coated on the back of an iron plate, commonly referred to as a coated steel sheet, and more particularly to a coating composition excellent in adhesion over a wide temperature range.
일반적으로 도장 강판은 산업용, 일반용등에 광범위하게 사용되는 강판으로 그 이면에는 미관상 또는 방청을 위하여 도료(이면용 도료)를 도장하여 사용하고 있다. 이러한 도장 강판 이면용 도료는 가공성, 경도, 내용제성, 소지와의 밀착성 및 각종 재료와의 부착성등이 요구된다.In general, the coated steel sheet is widely used in industrial, general use, etc., and the back side is used by coating a paint (backside paint) for aesthetics or rust prevention. The paint for back surface of the coated steel sheet is required to have workability, hardness, solvent resistance, adhesion to the substrate, adhesion to various materials, and the like.
종래의 도장 강판 이면용 도료는 미관상 또는 방청을 주목적으로 하는 일반용과 단열목적으로 스티로폴 및 폴리에틸렌 쉬트등을 접착시키는 접착용으로 구별하여 사용하고 있다.Conventional paints for the back of the coated steel sheet are used by distinguishing the adhesive for bonding styropol, polyethylene sheet, etc. for general purpose and adiabatic purpose mainly for aesthetic or antirust.
일반용으로 사용되는 도장 강판 이면용 도료는 주로 폴리에스테르계 수지를 주바인더로 사용하고 보조바인더로 아미노계 수지 또는 에폭시계 수지를 사용하여 경화시키는 시스템이며 이 경우에 도막의 가공성, 경도 및 내용제성은 우수하나 폴티에틸렌 쉬트의 부착성은 매우 나쁘다는 문제점이 제기되고 있다.Paint for the back of steel plate used for general purpose is a system that mainly uses polyester resin as a main binder and an amino resin or epoxy resin as an auxiliary binder, and in this case, processability, hardness and solvent resistance Although excellent, the adhesion of polyethylene sheet is very bad.
또한 스티로폴 접착용으로 사용되는 도장 강판 이면용 도료는 주로 에폭시계 수지를 주바인더로 사용하고 보조바인더로 아미노계 수지 또는 에폭시계 수지를 사용하여 경화시키는 시스템으로, 이 경우에는 스티로폴의 부착성은 우수하나 폴리에틸렌 쉬트의 부착성은 매우 불량하다는 문제점이 제기되고 있다.In addition, the coating material for the back side of the coated steel plate used for styropol adhesion is a system that mainly uses epoxy resin as a main binder and an amino resin or epoxy resin as an auxiliary binder. In this case, the adhesion of styropol is excellent. The problem is that the adhesion of the polyethylene sheet is very poor.
또한, 도장 강판의 외면에 적용되는 도료(도장 강판용 상도도료)는 불소도료, 실리콘 도료, 폴리에스테르 도료등 매우 다양하게 사용되며 상도도료의 종류에 따라 경화온도가 서로 다르다. 종래의 상도도료 경화온도를 소지표면 온도로 표시하면 188∼249℃로 매우 광범위하며 이에 따라 그 이면에 사용하는 이면용 도료 역시 광범위한 온도에서 경화된다. 예를들면 경화온도가 204℃인 이면용 도료를 도장한 강판에 상도도료로 불소도료가 도장되는 경우에는 불소도료의 경화온도가 249℃이므로 불소도료의 경화시 그 이면에 사용된 이면용 도료는 지나친 경화로 인하여 단단한 도막을 형성하여 부착성, 가공성 및 기타 물성이 저하되는 문제점이 제기되고 있으며 이로 인하여 생산효율의 저하 및 인건비의 상승 등의 문제점이 야기되고 있다.In addition, the paint applied to the outer surface of the coated steel sheet (top coating for coated steel sheet) is used in various ways, such as fluorine paint, silicon paint, polyester paint and the curing temperature is different depending on the type of top coat. When the conventional topcoat curing temperature is expressed by the surface temperature of the base material, it is very wide, ranging from 188 to 249 ° C. Accordingly, the backside paint used on the backside is also cured at a wide range of temperatures. For example, if fluorine paint is coated with a top coat on a steel plate coated with a backing paint with a curing temperature of 204 ° C, the curing temperature of the fluorine paint is 249 ° C. Due to excessive hardening, a problem of deterioration of adhesion, processability and other physical properties due to the formation of a hard coating film has been raised, which causes problems such as a decrease in production efficiency and an increase in labor costs.
본 발명자들은 이와 같은 종래 기술의 문제점을 극복하여 보다 진보된 도장 강판 이면용 피막 조성물을 수득하기 위하여 연구노력한 결과, 바인더로 폴리에스테르계 수지를 결합체로 사용하고, 여기에 아미노계 수지, 에폭시계 수지, 폴리올 등을 혼합사용함으로써 전술한 종래의 도장 강판 이면용 도료가 용도에 따라 각기 다르게 사용되는 단점을 해결하고 하나의 도료로써 광범위한 온도(188∼249℃)에서 일반용과 스티로폴 및 폴리에틸렌 쉬트 접착용 모두에 사용함과 동시에 가공성, 경도 및 내용제성 등이 우수한 도장 강판 이면용 피막 조성물을 수득할 수 있음을 발견하여 본 발명을 완성하였다.The present inventors have tried to overcome the problems of the prior art to obtain a more advanced coating composition for the back surface of the coated steel sheet, and as a result, using a polyester resin as a binder, amino resin, epoxy resin By using a mixture of polyol and the like, the above-described conventional paints for backing steel sheets are used differently depending on the application. As a single paint, both general and styropol and polyethylene sheet adhesives can be used at a wide range of temperatures (188 ~ 249 ℃). The present invention was completed by discovering that a coating composition for back surface of a coated steel sheet having excellent workability, hardness, solvent resistance and the like can be obtained.
본 발명에서 바인더로서는 폴리에스테르계 수지를 사용한다. 폴리에스테르계 수지로서는 1,3-부틸렌글리콜, 펜탄디올, 1,6-헥산디올, 네오펜틸글리콜, 트리메틸올프로판, 테레프탈산, 이소프탈산, 무수프탈산등을 사용한 오일 프리 폴리에스테르 수지, 포화 폴리에스테르 수지, 에폭시 변성 폴리에스테르 수지, 우레탄 변성 폴리에스테르 수지, 아크릴 변성 폴리에스테르 수지, 또는 이들의 혼합물이 사용될 수 있다. 폴리에스테르 수지의 산가, 분자량, 분자량 분포도 및/또는 변성물질에 따라 도막의 부착성, 가공성 및 내용제성이 좌우된다. 사용할 수 있는 바람직한 폴리에스테르 수지의 예로서는 분자량이 5,000 내지 20,000g/mo1e 이고, 산가는 10 이하이고, 불휘발분이 60%인 합성된 폴리에스테르계 수지를 들 수 있다.In the present invention, a polyester resin is used as the binder. As polyester resin, oil-free polyester resin, saturated polyester using 1, 3- butylene glycol, pentanediol, 1, 6- hexanediol, neopentyl glycol, trimethylol propane, terephthalic acid, isophthalic acid, phthalic anhydride, etc. Resin, epoxy modified polyester resin, urethane modified polyester resin, acrylic modified polyester resin, or mixtures thereof can be used. The adhesion, processability and solvent resistance of the coating film depend on the acid value, molecular weight, molecular weight distribution and / or modified substance of the polyester resin. As an example of the preferable polyester resin which can be used, the synthesized polyester-type resin whose molecular weight is 5,000-20,000 g / mo1e, an acid value is 10 or less, and a non volatile matter is 60% is mentioned.
아미노계 수지로서는 순수 우레아-포름알데히드 수지, 변성 우레아-포름알데히드 수지, 순수 멜라민-포름알데히드 수지, 변성 멜라민-포름알데히드 수지 또는 이들의 혼합물이 사용될 수 있다. 아미노계 수지는 주사슬의 모양과 치환기의 종류에 따라 도막의 경도 및 내용제성에 영향을 준다. 이러한 치환기의 예로서는 메톡시기, 에톡시기 및 부톡시기를 들 수 있다. 즉, 메톡시기, 에톡시기 또는 부톡시기로 치환된 아미노 수지 또는 이들의 혼합물을 아미노 수지로서 사용할 수 있다. 또한, 아미노 수지는 예를 들면, 변성 멜라민-포름알데히드 수지와 변성 우레아 포름알데히드수지를 혼합한 것을 사용할 수 있다.As the amino resin, pure urea-formaldehyde resin, modified urea-formaldehyde resin, pure melamine-formaldehyde resin, modified melamine-formaldehyde resin or mixtures thereof can be used. The amino resin affects the hardness and the solvent resistance of the coating film depending on the shape of the main chain and the kind of the substituent. Examples of such a substituent include methoxy group, ethoxy group and butoxy group. That is, an amino resin substituted with a methoxy group, an ethoxy group or a butoxy group or a mixture thereof can be used as the amino resin. As the amino resin, for example, a mixture of a modified melamine-formaldehyde resin and a modified urea formaldehyde resin can be used.
에폭시계 수지로서는 비스페놀 에이형 에폭시 수지, 비스페놀 에프형 에폭시 수지, 페녹시형 에폭시 수지, 다관능성 에폭시 수지, 아민 변성 에폭시 수지, 또는 이들의 혼합물이 사용될 수 있다. 에폭시 수지는 변성된 형태에 따라 도막의 가공성에 영향을 줄 수 있으며 가공성을 향상시키기 위하여 지방족계의 에폭시 수지를 사용할 수도 있다. 에폭시 수지의 예로는 아민으로 변성되고 에폭시 당량이 4,000 내지 6,000(g/당량)인 비스페놀 에이형 에폭시 수지를 들 수 있다.As the epoxy resin, a bisphenol A type epoxy resin, a bisphenol F type epoxy resin, a phenoxy type epoxy resin, a polyfunctional epoxy resin, an amine modified epoxy resin, or a mixture thereof can be used. The epoxy resin may affect the processability of the coating film according to the modified form, and an aliphatic epoxy resin may be used to improve the processability. Examples of the epoxy resins include bisphenol A type epoxy resins modified with amines and epoxy equivalents of 4,000 to 6,000 (g / equivalent).
폴리올로서는 에틸렌 글리콜, 프로필렌 글리콜, 펜탄디올, 네오펜틸 글리콜, 디에틸렌 글리콜, 글리세린, 트리메틸올에탄, 펜타에리스리톨, 디펜타에리스리톨, 폴리에테르폴리올 등을 사용할 수 있다. 바람직하게는, 수산기가 50 내지 500인 폴리에테르 폴리올을 사용한다. 폴리올의 구조와 분자량에 따라 도막의 부착성, 가공성 및 기타 물성에 영향을 줄 수도 있다.Ethylene glycol, propylene glycol, pentanediol, neopentyl glycol, diethylene glycol, glycerin, trimethylol ethane, pentaerythritol, dipentaerythritol, polyether polyol and the like can be used as the polyol. Preferably, polyether polyols having a hydroxyl group of 50 to 500 are used. Depending on the structure and molecular weight of the polyol, it may affect the adhesion, processability and other physical properties of the coating film.
도장 강판 이면용 도료의 물성은 폴리에스테르계 수지, 아미노계 수지 그리고 에폭시계 수지의 사용비율에 따라서 도막의 부착성 및 기타 물성이 크게 좌우되므로 그 비율을 적절히 사용하여야 한다. 폴리에스테르계 수지는 도막의 가공성에 주로 영향을 주며, 아미노계 수지와 에폭시계 수지는 경도, 내용제성 및 부착성에 영향을 준다.The physical properties of the paint for the back of the coated steel sheet are highly dependent on the adhesion and other physical properties of the coating film depending on the use ratio of the polyester resin, the amino resin and the epoxy resin. Polyester resin mainly affects the processability of the coating film, amino resin and epoxy resin affect the hardness, solvent resistance and adhesion.
본 발명에 따르는 도장 강판 이면용 피막 조성물에 사용되는 상기 수지들의 사용비율은 폴리에스테르계 수지 10-50 중량부, 아미노계 수지 0.1-30 중량부, 그리고 에폭시계 수지가 0.1-7 중량부의 범위인 것이 바람직하다. 일반적으로, 폴리에스테르계 수지가 10부 이하의 양으로 사용되는 경우에는 도막의 경도 및 내용제성은 양호하나 가공성이 취약하며, 폴리에스테르계 수지가 50부 이상 사용되는 경우에는 도막의 가공성은 양호하나 경도 및 내용제성이 취약하다. 또한 아미노계 수지 및 에폭시계 수지가 30부 이상 사용될 경우에는 도막의 가공성이 취약하다.The use ratio of the resins used in the coating composition for back surface of coated steel sheet according to the present invention is in the range of 10-50 parts by weight of polyester resin, 0.1-30 parts by weight of amino resin, and 0.1-7 parts by weight of epoxy resin. It is preferable. Generally, when the polyester resin is used in an amount of 10 parts or less, the hardness and solvent resistance of the coating film are good, but the workability is poor. When the polyester resin is used at 50 parts or more, the coating film is good. Hardness and solvent resistance are weak. Moreover, when 30 parts or more of an amino resin and an epoxy resin are used, workability of a coating film is weak.
본 발명의 주목적의 하나인 부착성은 물리적인 부착 또는 화학적인 부착에 의하여 이루어지므로 이를 충분히 고려하여야 한다. 도막의 부착성은 사용된 안료의 함량과 형태에 따라 좌우될 수도 있으므로 안료를 적절히 선택 및 사용하여야 한다.One of the main objectives of the present invention, adhesion is achieved by physical or chemical attachment, so this should be considered sufficiently. The adhesion of the coating film may depend on the content and form of the pigment used, so the pigment should be selected and used appropriately.
안료로는 탈크, 스트론튬 크로메이트, 티타늄 디옥사이드, 탄산칼슘, 크레이, 알루미늄 실리케이트, 산화철, 카본블랙 등을 사용할 수 있다.As the pigment, talc, strontium chromate, titanium dioxide, calcium carbonate, cray, aluminum silicate, iron oxide, carbon black, or the like can be used.
본 발명에 따르는 조성물의 도장방법은 스프레이에 의한 코팅, 커튼 플로우 코팅, 디핑 코팅, 롤러 코팅 등을 사용할 수 있으며 작업시 발생되는 기포의 제거 및 작업성을 도와주기 위하여 첨가제를 사용할 수도 있다. 본 발명에서는 안료의 침강을 방지하기 위하여 유기벤토나이트와 같은 침강방지제, 아크릴 코폴리머와 같은 평활제, 디노닐나프탈렌디설폰산과 같은 경화촉매를 사용할 수 있다.The coating method of the composition according to the present invention may be used by spray coating, curtain flow coating, dipping coating, roller coating and the like, and additives may be used to help remove bubbles and workability generated during operation. In the present invention, in order to prevent the settling of the pigment, a settling agent such as organic bentonite, a leveling agent such as an acrylic copolymer, and a curing catalyst such as dinonylnaphthalenedisulfonic acid may be used.
용제로는 방향족 및 지방족계의 유기용제를 사용할 수 있으며, 그 예로는 크실렌, 톨루엔, 아세톤, 메탄올, 에탄올, 부탄올, 이소프로필알콜, 메틸이소부틸케톤, 에틸렌글리콜모노메틸에테르, 에틸렌글리콜모노에틸에테르, 에틸렌글리콜모노부틸에테르, 에틸렌글리콜모노메틸에테르아세테이트, 에틸렌글리콜모노에틸에테르아세테이트, 에틸렌글리콜모노부틸에테르아세테이트 및 셀로솔브계 용제등을 들 수 있다.As the solvent, aromatic and aliphatic organic solvents may be used. Examples thereof include xylene, toluene, acetone, methanol, ethanol, butanol, isopropyl alcohol, methyl isobutyl ketone, ethylene glycol monomethyl ether, and ethylene glycol monoethyl ether. And ethylene glycol monobutyl ether, ethylene glycol monomethyl ether acetate, ethylene glycol monoethyl ether acetate, ethylene glycol monobutyl ether acetate and cellosolve solvents.
전기한 본 발명의 도장 강판 이면용 피막 조성물은 일반적으로 폴리에스테르계 수지 10-50 중량부를 안료 0.1-30 중량부와 균일하게 혼합하고, 아미노계 수지 0.1 -30 중량부 및 에폭시계 수지 0.1-30 중량부를 첨가하여 균일하게 혼합한 다음, 침강방지제와 평활제 등의 첨가제 0.1-7 중량부, 폴리올 0.1-10 중량부, 경화촉매 0.1-2.0 중량부 및 유기용제 10-50 중량부를 첨가하고 균일하게 혼합함으로써 제조될 수 있다.In general, the coating composition for back surface of the coated steel sheet of the present invention is uniformly mixed with 10-30 parts by weight of a polyester resin and 0.1-30 parts by weight of a pigment, and 0.1-30 parts by weight of an amino resin and 0.1-30 parts of an epoxy resin. Add the weight parts and mix uniformly, add 0.1-7 parts by weight of additives such as antisettling agent and leveling agent, 0.1-10 parts by weight of polyol, 0.1-2.0 parts by weight of curing catalyst and 10-50 parts by weight of organic solvent It can be prepared by mixing.
이하 본 발명을 보다 구체적으로 이해할 수 있도록 실시예를 기재하나, 본 발명이 이에 국한되는 것은 아니다.Hereinafter, examples will be described so that the present invention can be understood in more detail, but the present invention is not limited thereto.
[실시예 1]Example 1
[피막 조성물의 제조][Production of Coating Composition]
분자량이 5,000 내지 20,000g/mo1e 이고, 산가는 10 이하이고, 불휘발분이 60%인 합성된 폴리에스테르계 수지 33 중량부를 스트론튬 크로메이트 4 중량부, 티타늄 옥사이드 15 중량부, 탄산칼슘 5 중량부 및 착색안료로서 산화철 0.4 중량부와 균일하게 혼합하고, 아미노 수지로서 변성 멜라민-포름알데히드 수지와 변성 우레아-포름알데히드 수지를 혼합한 변성 아미노 수지 5.4 중량부 및 에폭시 수지로서 와이디 011(국도화학사의 상품명) 12.6 중량부를 첨가하여 균일하게 혼합한다.33 parts by weight of a synthetic polyester resin having a molecular weight of 5,000 to 20,000 g / mo1e, an acid value of 10 or less, and a nonvolatile content of 60%, 4 parts by weight of strontium chromate, 15 parts by weight of titanium oxide, 5 parts by weight of calcium carbonate, and coloring 5.4 parts by weight of a modified amino resin obtained by uniformly mixing with 0.4 parts by weight of iron oxide as a pigment and a modified melamine-formaldehyde resin and a modified urea-formaldehyde resin as an amino resin, and YDID 011 (trade name of Kukdo Chemical Co., Ltd.) Add 12.6 parts by weight and mix uniformly.
다음에, 침강방지제로서 유기벤토나이트 2.5부와 평활제로서 아크릴코폴리머 0.2 중량부, 폴리올로서 수산기가 50 내지 500인 폴리에테르 폴리올 5.5 중량부, 경화촉매로서 디노닐나프탈렌 디설폰산 0.4 중량부 및 유기용제로서 이소부탄올 5 중량부, 셀로솔브 아세테이트 7 중량부 및 크실렌 4 중량부를 첨가하고 균일하게 혼합하여 피막 조성물을 제조한다. 사용된 성분의 조성을 하기 표 1에 나타낸다.Next, 2.5 parts of organic bentonite as an antisettling agent, 0.2 parts by weight of an acrylic copolymer as a smoothing agent, 5.5 parts by weight of a polyether polyol having a hydroxyl group of 50 to 500 as a polyol, 0.4 part by weight of dinonylnaphthalene disulfonic acid as a curing catalyst, and an organic solvent 5 parts by weight of isobutanol, 7 parts by weight of cellosolve acetate and 4 parts by weight of xylene were added and mixed uniformly to prepare a coating composition. The composition of the components used is shown in Table 1 below.
[실시예 2]Example 2
변성 아미노 수지를 14.5중량%를 사용하고, 에폭시 수지로서 와이디 011(국도화학사의 상품명) 6.5중량%를 사용하고, 탄산칼슘 5중량% 대신에 탈크 1.3중량% 및 탄산칼슘 3.7중량%를 사용한 것을 제외하고는 실시예 1에서와 동일한 방법으로 피막 조성물을 제조한다. 사용된 성분의 조성을 하기 표 1에 나타낸다.14.5% by weight of the modified amino resin, 6.5% by weight of WYD 011 (trade name of Kukdo Chemical Co., Ltd.), and 1.3% by weight of talc and 3.7% by weight of calcium carbonate were used instead of 5% by weight of calcium carbonate. Except for producing a coating composition in the same manner as in Example 1. The composition of the components used is shown in Table 1 below.
[실시예 3]Example 3
변성 아미노 수지를 14.5중량%를 사용하고, 에폭시 수지로서 와이디 011대신에 와이디 020(국도화학사의 상품명) 6.5중량%를 사용하고, 탄산칼슘 5중량% 대신에 탈크 2.5중량% 및 탄산칼슘 2.5중량%를 사용한 것을 제외하고는 실시예 1에서와 동일한 방법으로 피막 조성물을 제조한다. 사용된 성분의 조성을 하기 표 1에 나타낸다.14.5% by weight of modified amino resin, 6.5% by weight of DY 020 (trade name of Kukdo Chemical Co., Ltd.) instead of YDl 011 as epoxy resin, 2.5% by weight of talc and 2.5% by weight of calcium carbonate instead of 5% by weight of calcium carbonate A coating composition was prepared in the same manner as in Example 1 except that the wt% was used. The composition of the components used is shown in Table 1 below.
[실시예 4]Example 4
변성 아미노 수지를 14.5중량%를 사용하고, 에폭시 수지로서 와이디 011대신에 와이디 011(국도화학사의 상품명)을 아민으로 변성시킨 에폭시 수지 6.5중량%를 사용하고, 탄산칼슘 5중량% 대신에 탈크 3.7중량% 및 탄산칼슘 1.3중량%를 사용한 것을 제외하고는 실시예 1에서와 동일한 방법으로 피막 조성물을 제조한다. 사용된 성분의 조성을 하기 표 1에 나타낸다.14.5 weight% of modified amino resin, 6.5 weight% of epoxy resin which modified WYD 011 (trade name of Kukdo Chemical Co., Ltd.) with an amine instead of WYD 011 as epoxy resin, and talc instead of 5% by weight of calcium carbonate A coating composition was prepared in the same manner as in Example 1, except that 3.7 wt% and 1.3 wt% calcium carbonate were used. The composition of the components used is shown in Table 1 below.
[실시예 5]Example 5
변성 아미노 수지를 14.5중량%를 사용하고, 에폭시 수지로서 와이디 011대신에 와이디 020(국도화학사의 상품명)을 아민으로 변성시킨 에폭시 수지 6.5중량%를 사용하고, 탄산칼슘 5중량% 대신에 탈크 5중량%를 사용한 것을 제외하고는 실시예 1에서와 동일한 방법으로 피막 조성물을 제조한다. 사용된 성분의 조성을 하기 표 1에 나타낸다.14.5 weight% of modified amino resin, 6.5 weight% of epoxy resin which modified WYD 020 (trade name of Kukdo Chemical Co., Ltd.) with an amine instead of WIDI 011 as an epoxy resin, and talc instead of 5 weight% of calcium carbonate A coating composition was prepared in the same manner as in Example 1 except that 5 wt% was used. The composition of the components used is shown in Table 1 below.
[비교예 1]Comparative Example 1
폴리에스테르계 수지, 아미노 수지 및 폴리올을 사용하지 않고, 에폭시 수지로서 와이디 011(국도화학사의 상품명) 54 중량부를 스트론튬 크로메이트 4 중량부, 티타늄 옥사이드 17.5 중량부, 탈크 5 중량부 및 착색안료 0.4 중량부와 균일하게 혼합한 다음, 침강방지제 2.5부, 평활제 0.2 중량부, 경화촉매 0.4 중량부 및 유기용제로서 이소부탄올 5 중량부, 셀로솔브 아세테이트 7 중량부 및 크실렌 4 중양부를 첨가하고 균일하게 혼합하여 비교용 조성물을 제조한다. 사용된 성분의 조성을 하기 표 1에 나타낸다.Without using a polyester resin, an amino resin and a polyol, 54 parts by weight of WYD 011 (trade name), 4 parts by weight of strontium chromate, 17.5 parts by weight of titanium oxide, 5 parts by weight of talc, and 0.4 weight of pigmented pigment as epoxy resins And uniformly mixed with 2.5 parts by weight of anti-settling agent, 0.2 parts by weight of leveling agent, 0.4 parts by weight of curing catalyst and 5 parts by weight of isobutanol, 7 parts by weight of cellosolve acetate and 4 parts by weight of xylene 4 as organic solvents and mixed uniformly. To prepare a comparative composition. The composition of the components used is shown in Table 1 below.
[실험예 1]Experimental Example 1
상기 수득된 실시예 1 - 5 및 비교예 1의 피막 조성물을 20cm × 15cm × 0.35mm의 아연도금강판으로 된 시편에 바-코터로 도장한다. 도장시편을 분위기 온도가 232℃인 오븐안에서 경화시켜 건조 도막 두께가 5㎛인 시편을 얻는다. 이 시편으로 다음과 같이 내용제성, 연필경도, 스티로폴 접착성 및 폴리에틸렌 쉬트 접착성을 시험한다.The coating compositions of Examples 1-5 and Comparative Example 1 obtained above were coated with a bar coater on specimens made of galvanized steel sheets of 20 cm × 15 cm × 0.35 mm. The coated specimen is cured in an oven with an ambient temperature of 232 ° C. to obtain a specimen having a dry coating thickness of 5 μm. This specimen is tested for solvent resistance, pencil hardness, styropol adhesion and polyethylene sheet adhesion as follows.
내용제성 : 메틸에틸케톤을 거즈에 묻힌 후 왕복으로 문지르면서 도막이 손상되어 소지가 보일 때까지의 왕복 횟수를 측정한다.Solvent resistance: Methyl ethyl ketone is applied to the gauze and rubbed in a reciprocating manner to measure the number of round trips until the coating is damaged and visible.
연필강도 : 미쓰비시 유니 경도필을 사용하여 측정한다.Pencil Strength: Measured using Mitsubishi Uni Hardness Pencil.
스티로폴 접착성 : 먼저 소지위에 접착제를 바른 후 접착시킬 스티로폴(100 × 100 × 20H㎣)을 접착시킨다. 0.18㎏/㎠의 하중으로 5분동안 압착시킨 다음 하중을 제거하여 24시간 실온에서 방치한다. 방치후 스티로폴을 제거하여 표면상태를 평가한다.Styropol adhesiveness: First, apply adhesive on the base, and then attach the styropol (100 × 100 × 20H㎣) to be bonded. After pressing for 5 minutes at a load of 0.18 kg / cm 2, the load was removed and left at room temperature for 24 hours. After standing, the styropol is removed and the surface condition is evaluated.
폴리에틸렌 쉬트 접착성 : 폴리에틸렌 시트는 발포 폴리에틸렌 쉬트를 사용하며, 표면온도계를 사용하여 소지표면온도를 120℃로 일정하게 유지시킨 후 롤러(3kg)를 사용하여 폴리에틸렌 쉬트를 열융착시킨다. 쉬트를 제거한 후 표면상태를 평가한다.Polyethylene Sheet Adhesive: Polyethylene sheet is made of foamed polyethylene sheet, and the surface temperature is kept constant at 120 ℃ using a surface thermometer, and then the polyethylene sheet is heat-sealed using a roller (3kg). After removing the sheet, the surface condition is evaluated.
도료의 물성 시험결과를 표 2에 나타낸다.Table 2 shows the test results of the physical properties of the paints.
[실험예 2]Experimental Example 2
상기 실시예 5의 조성물에 대하여 각각의 소지표면온도(188℃ - 249℃)로 경화시킨 후 실험예 1에서와 같은 방법으로 물성을 측정하였다.The composition of Example 5 was cured at each substrate surface temperature (188 ° C-249 ° C) and then physical properties were measured in the same manner as in Experimental Example 1.
결과는 하기 표 3과 같다.The results are shown in Table 3 below.
상기 실험 결과에서 나타난 바와 같이 본 발명의 조성물은 188℃ 내지 249℃의 광범위한 경화온도에서 내용제성 및 경도가 비교 조성물보다 우수하며, 스티로폴 접착성 및 폴리에틸렌 쉬트 접착성이 모두 우수함을 알 수 있다.As shown in the above experimental results, the composition of the present invention has excellent solvent resistance and hardness at a wide range of curing temperatures of 188 ° C. to 249 ° C., and is superior to both the styropol adhesive and the polyethylene sheet adhesive.
Claims (4)
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| KR1019950040844A KR0158535B1 (en) | 1995-11-11 | 1995-11-11 | Coating composition for painted steel sheet back side |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990063337A (en) * | 1997-12-23 | 1999-07-26 | 남창우 | Polypropylene resin composition excellent in paintability |
| KR101872857B1 (en) | 2017-03-14 | 2018-06-29 | 주식회사 엔투에이 | Subminiature wide angle image pickup lens system |
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1995
- 1995-11-11 KR KR1019950040844A patent/KR0158535B1/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990063337A (en) * | 1997-12-23 | 1999-07-26 | 남창우 | Polypropylene resin composition excellent in paintability |
| KR101872857B1 (en) | 2017-03-14 | 2018-06-29 | 주식회사 엔투에이 | Subminiature wide angle image pickup lens system |
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