CN103773210B - Waterborne two-component polyurethane coating composition - Google Patents
Waterborne two-component polyurethane coating composition Download PDFInfo
- Publication number
- CN103773210B CN103773210B CN201210452211.XA CN201210452211A CN103773210B CN 103773210 B CN103773210 B CN 103773210B CN 201210452211 A CN201210452211 A CN 201210452211A CN 103773210 B CN103773210 B CN 103773210B
- Authority
- CN
- China
- Prior art keywords
- coating composition
- waterborne
- component
- polyurethane coating
- component polyurethane
- 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 - Fee Related
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- 239000011527 polyurethane coating Substances 0.000 title claims abstract description 62
- 239000000203 mixture Substances 0.000 title claims abstract description 59
- 229920000642 polymer Polymers 0.000 claims abstract description 65
- 239000006185 dispersion Substances 0.000 claims abstract description 52
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 claims abstract description 35
- 150000005846 sugar alcohols Polymers 0.000 claims abstract description 33
- 239000005058 Isophorone diisocyanate Substances 0.000 claims abstract description 25
- 230000000051 modifying effect Effects 0.000 claims abstract description 20
- 239000007787 solid Substances 0.000 claims abstract description 15
- 239000000839 emulsion Substances 0.000 claims abstract description 14
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 10
- 229920005862 polyol Polymers 0.000 claims description 31
- 239000003795 chemical substances by application Substances 0.000 claims description 27
- 239000003963 antioxidant agent Substances 0.000 claims description 23
- 230000003078 antioxidant effect Effects 0.000 claims description 23
- 239000011248 coating agent Substances 0.000 claims description 22
- 238000000576 coating method Methods 0.000 claims description 22
- -1 acryl polyol Chemical class 0.000 claims description 21
- 239000000758 substrate Substances 0.000 claims description 19
- 229920005906 polyester polyol Polymers 0.000 claims description 9
- HJOVHMDZYOCNQW-UHFFFAOYSA-N isophorone Chemical compound CC1=CC(=O)CC(C)(C)C1 HJOVHMDZYOCNQW-UHFFFAOYSA-N 0.000 claims description 8
- 229920000728 polyester Polymers 0.000 claims description 7
- 150000002989 phenols Chemical class 0.000 claims description 6
- 239000012948 isocyanate Substances 0.000 claims description 4
- 150000002513 isocyanates Chemical class 0.000 claims description 4
- IIACRCGMVDHOTQ-UHFFFAOYSA-M sulfamate Chemical compound NS([O-])(=O)=O IIACRCGMVDHOTQ-UHFFFAOYSA-M 0.000 claims description 4
- 229920003009 polyurethane dispersion Polymers 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 claims description 2
- 238000004383 yellowing Methods 0.000 abstract description 33
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 60
- 238000002360 preparation method Methods 0.000 description 45
- 238000012360 testing method Methods 0.000 description 33
- 238000000034 method Methods 0.000 description 26
- 150000003077 polyols Chemical class 0.000 description 25
- 239000008199 coating composition Substances 0.000 description 22
- 239000000049 pigment Substances 0.000 description 22
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- 230000000052 comparative effect Effects 0.000 description 18
- 238000003756 stirring Methods 0.000 description 15
- 238000002156 mixing Methods 0.000 description 14
- 238000001914 filtration Methods 0.000 description 13
- 239000004814 polyurethane Substances 0.000 description 11
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- 239000012752 auxiliary agent Substances 0.000 description 9
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 9
- 229920002635 polyurethane Polymers 0.000 description 9
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 8
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- 239000006184 cosolvent Substances 0.000 description 4
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- 239000000047 product Substances 0.000 description 4
- 239000004408 titanium dioxide Substances 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
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- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical class OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 3
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- 238000010790 dilution Methods 0.000 description 3
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- XXMIOPMDWAUFGU-UHFFFAOYSA-N hexane-1,6-diol Chemical class OCCCCCCO XXMIOPMDWAUFGU-UHFFFAOYSA-N 0.000 description 3
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- 229920000768 polyamine Polymers 0.000 description 3
- 239000004417 polycarbonate Substances 0.000 description 3
- 229920006324 polyoxymethylene Polymers 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 239000003643 water by type Substances 0.000 description 3
- DAFHKNAQFPVRKR-UHFFFAOYSA-N (3-hydroxy-2,2,4-trimethylpentyl) 2-methylpropanoate Chemical compound CC(C)C(O)C(C)(C)COC(=O)C(C)C DAFHKNAQFPVRKR-UHFFFAOYSA-N 0.000 description 2
- ARXKVVRQIIOZGF-UHFFFAOYSA-N 1,2,4-butanetriol Chemical compound OCCC(O)CO ARXKVVRQIIOZGF-UHFFFAOYSA-N 0.000 description 2
- SVTBMSDMJJWYQN-UHFFFAOYSA-N 2-methylpentane-2,4-diol Chemical compound CC(O)CC(C)(C)O SVTBMSDMJJWYQN-UHFFFAOYSA-N 0.000 description 2
- SYBYTAAJFKOIEJ-UHFFFAOYSA-N 3-Methylbutan-2-one Chemical compound CC(C)C(C)=O SYBYTAAJFKOIEJ-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 2
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 2
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 150000004703 alkoxides Chemical class 0.000 description 2
- 125000002947 alkylene group Chemical group 0.000 description 2
- XXROGKLTLUQVRX-UHFFFAOYSA-N allyl alcohol Chemical compound OCC=C XXROGKLTLUQVRX-UHFFFAOYSA-N 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 150000001414 amino alcohols Chemical class 0.000 description 2
- 239000002518 antifoaming agent Substances 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
- 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 description 2
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- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 125000004185 ester group Chemical group 0.000 description 2
- 125000004836 hexamethylene group Chemical group [H]C([H])([*:2])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[*:1] 0.000 description 2
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- XLJMAIOERFSOGZ-UHFFFAOYSA-M cyanate Chemical compound [O-]C#N XLJMAIOERFSOGZ-UHFFFAOYSA-M 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- FOTKYAAJKYLFFN-UHFFFAOYSA-N decane-1,10-diol Chemical class OCCCCCCCCCCO FOTKYAAJKYLFFN-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 150000004985 diamines Chemical class 0.000 description 1
- 125000005442 diisocyanate group Chemical group 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 1
- 238000003618 dip coating Methods 0.000 description 1
- ROORDVPLFPIABK-UHFFFAOYSA-N diphenyl carbonate Chemical compound C=1C=CC=CC=1OC(=O)OC1=CC=CC=C1 ROORDVPLFPIABK-UHFFFAOYSA-N 0.000 description 1
- SZXQTJUDPRGNJN-UHFFFAOYSA-N dipropylene glycol Chemical compound OCCCOCCCO SZXQTJUDPRGNJN-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000007720 emulsion polymerization reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000001530 fumaric acid Substances 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- JBFHTYHTHYHCDJ-UHFFFAOYSA-N gamma-caprolactone Chemical compound CCC1CCC(=O)O1 JBFHTYHTHYHCDJ-UHFFFAOYSA-N 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- CATSNJVOTSVZJV-UHFFFAOYSA-N heptan-2-one Chemical compound CCCCCC(C)=O CATSNJVOTSVZJV-UHFFFAOYSA-N 0.000 description 1
- ACCCMOQWYVYDOT-UHFFFAOYSA-N hexane-1,1-diol Chemical class CCCCCC(O)O ACCCMOQWYVYDOT-UHFFFAOYSA-N 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
- 229940051250 hexylene glycol Drugs 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 239000001023 inorganic pigment Substances 0.000 description 1
- 125000003010 ionic group Chemical group 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000001034 iron oxide pigment Substances 0.000 description 1
- GJRQTCIYDGXPES-UHFFFAOYSA-N iso-butyl acetate Natural products CC(C)COC(C)=O GJRQTCIYDGXPES-UHFFFAOYSA-N 0.000 description 1
- FGKJLKRYENPLQH-UHFFFAOYSA-M isocaproate Chemical compound CC(C)CCC([O-])=O FGKJLKRYENPLQH-UHFFFAOYSA-M 0.000 description 1
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 1
- OQAGVSWESNCJJT-UHFFFAOYSA-N isovaleric acid methyl ester Natural products COC(=O)CC(C)C OQAGVSWESNCJJT-UHFFFAOYSA-N 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000006210 lotion Substances 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 239000000594 mannitol Substances 0.000 description 1
- 235000010355 mannitol Nutrition 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 238000002715 modification method Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 1
- 239000012766 organic filler Substances 0.000 description 1
- 239000012860 organic pigment Substances 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920001610 polycaprolactone Polymers 0.000 description 1
- 239000004632 polycaprolactone Substances 0.000 description 1
- 229920006149 polyester-amide block copolymer Polymers 0.000 description 1
- 229920006146 polyetheresteramide block copolymer Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 150000003141 primary amines Chemical class 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- RQGPLDBZHMVWCH-UHFFFAOYSA-N pyrrolo[3,2-b]pyrrole Chemical compound C1=NC2=CC=NC2=C1 RQGPLDBZHMVWCH-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000000518 rheometry Methods 0.000 description 1
- 238000007761 roller coating Methods 0.000 description 1
- 238000005464 sample preparation method Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- IIACRCGMVDHOTQ-UHFFFAOYSA-N sulfamic acid group Chemical group S(N)(O)(=O)=O IIACRCGMVDHOTQ-UHFFFAOYSA-N 0.000 description 1
- 125000001273 sulfonato group Chemical group [O-]S(*)(=O)=O 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 235000012222 talc Nutrition 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 150000003504 terephthalic acids Chemical class 0.000 description 1
- 150000003512 tertiary amines Chemical group 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- AUHHYELHRWCWEZ-UHFFFAOYSA-N tetrachlorophthalic anhydride Chemical compound ClC1=C(Cl)C(Cl)=C2C(=O)OC(=O)C2=C1Cl AUHHYELHRWCWEZ-UHFFFAOYSA-N 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- YODZTKMDCQEPHD-UHFFFAOYSA-N thiodiglycol Chemical compound OCCSCCO YODZTKMDCQEPHD-UHFFFAOYSA-N 0.000 description 1
- 229950006389 thiodiglycol Drugs 0.000 description 1
- SZHOJFHSIKHZHA-UHFFFAOYSA-N tridecanoic acid Chemical compound CCCCCCCCCCCCC(O)=O SZHOJFHSIKHZHA-UHFFFAOYSA-N 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/62—Polymers of compounds having carbon-to-carbon double bonds
- C08G18/6216—Polymers of alpha-beta ethylenically unsaturated carboxylic acids or of derivatives thereof
- C08G18/625—Polymers of alpha-beta ethylenically unsaturated carboxylic acids; hydrolyzed polymers of esters of these acids
- C08G18/6254—Polymers of alpha-beta ethylenically unsaturated carboxylic acids and of esters of these acids containing hydroxy groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/0804—Manufacture of polymers containing ionic or ionogenic groups
- C08G18/0819—Manufacture of polymers containing ionic or ionogenic groups containing anionic or anionogenic groups
- C08G18/0828—Manufacture of polymers containing ionic or ionogenic groups containing anionic or anionogenic groups containing sulfonate groups or groups forming them
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/44—Polycarbonates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/62—Polymers of compounds having carbon-to-carbon double bonds
- C08G18/6216—Polymers of alpha-beta ethylenically unsaturated carboxylic acids or of derivatives thereof
- C08G18/622—Polymers of esters of alpha-beta ethylenically unsaturated carboxylic acids
- C08G18/6225—Polymers of esters of acrylic or methacrylic acid
- C08G18/6229—Polymers of hydroxy groups containing esters of acrylic or methacrylic acid with aliphatic polyalcohols
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/703—Isocyanates or isothiocyanates transformed in a latent form by physical means
- C08G18/705—Dispersions of isocyanates or isothiocyanates in a liquid medium
- C08G18/706—Dispersions of isocyanates or isothiocyanates in a liquid medium the liquid medium being water
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/77—Polyisocyanates or polyisothiocyanates having heteroatoms in addition to the isocyanate or isothiocyanate nitrogen and oxygen or sulfur
- C08G18/775—Polyisocyanates or polyisothiocyanates having heteroatoms in addition to the isocyanate or isothiocyanate nitrogen and oxygen or sulfur sulfur
-
- 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
-
- 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/06—Polyurethanes from polyesters
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Dispersion Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Paints Or Removers (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The present invention relates to a kind of waterborne two-component polyurethane coating composition, the waterborne two-component polyurethane coating composition includes：(a) one or more polyalcohol water-borne dispersions or water-based emulsion, the hydroxy radical content of the wherein described polyalcohol is 0.5 5.5wt.%, weight based on the polyalcohol is based on 100wt.%, the solid content of the polyalcohol water-borne dispersions or water-based emulsion is 10 70wt.%, and the total weight based on the polyalcohol water-borne dispersions or water-based emulsion is based on 100wt.%；(b) the isophorone diisocyanate polymer or performed polymer of one or more hydrophilic modifyings；The wherein described component (a) and content (b) so that NCO group and the equivalent proportion of hydroxyl are 0.2: 1 to 5: 1 in the waterborne two-component polyurethane coating composition.Value of chromatism after there is the waterborne two-component polyurethane coating composition resisting high-temperature yellowing, film prepared therefrom to be toasted 1 day at 150 DEG C is less than 3.0.
Description
Technical field
The present invention relates to a kind of waterborne two-component polyurethane coating compositions, include isophorone two more particularly to one kind
The aqueous polyurethane coating composition of isocyanates polymer or performed polymer.
Background technology
Bicomponent polyurethane coating is usually by the curing agent component containing isocyanate functional group and to contain hydroxyl or amine
The paint components of base functional group form.Bicomponent polyurethane coating is commonly divided into solvent borne polyurethane coating and aqueous polyurethane
Coating.Aqueous polyurethane coating, especially waterborne two-component polyurethane coating, due to not only remaining solvent borne polyurethane coating
Excellent performance, while also have good environment friendly, have broad application prospects.
Waterborne two-component polyurethane coating under high temperature environment, due to its film high temperature (>=150 DEG C) it is long-term (>=
It is easy to happen Yellowing under toasting for 24 hours), limits its application in the high temperature environment.Have some researchs in recent years to attempt
Improve the resisting high-temperature yellowing performance of polyurethane coating.CN101397475 discloses a kind of polyurethane high temperature resistant long acting anti-corrosive paint
Preparation method, but it belongs to solvent borne polyurethane system, and is not related to resisting high-temperature yellowing performance in the performance of its assessment；
CN1629234 discloses a kind of high-gloss and high temperature resistant silicon-acrylic polyurethane paint and preparation method thereof, but selected resin is organic
The acrylic resin of Si modification, curing agent HDI, and it is not related to the concrete measure of resisting high-temperature yellowing.For another example CN101481578A
A kind of capacitor coating of deep drawing resistant performance and high temperature yellowing resistance and preparation method thereof is disclosed, but it belongs to the poly- ammonia of solvent type
Ester system, and select closed polyisocyanate as curing agent, belongs to the range of baking vanish, cannot film-forming at room temperature.
Therefore there has been no the reports to the waterborne two-component polyurethane coating with resisting high-temperature yellowing performance so far.
Summary of the invention
One aspect of the present invention provides a kind of waterborne two-component polyurethane coating with resisting high-temperature yellowing, described double groups
Point aqueous polyurethane coating composition includes：
(a) one or more polyalcohol water-borne dispersions or water-based emulsion, wherein the hydroxy radical content of the polyalcohol is
0.5-5.5wt.%, the weight based on the polyalcohol is based on 100wt.%, the polyalcohol water-borne dispersions or water-based emulsion
Solid content be 10-70wt.%, the total weight based on the polyalcohol water-borne dispersions or water-based emulsion is based on 100wt.%；
(b) the isophorone diisocyanate polymer or performed polymer of one or more hydrophilic modifyings；
The content of the wherein described component (a) and (b) make NCO group in the waterborne two-component polyurethane coating composition
Equivalent proportion with hydroxyl is 0.2: 1 to 5: 1.In a preferred embodiment, the content of the component (a) and (b) make institute
It is 1.2: 1 to 1.5: 1 to state NCO group and the equivalent proportion of hydroxyl in waterborne two-component polyurethane coating composition.
In an embodiment of the invention, the isophorone diisocyanate polymer of the hydrophilic modifying or performed polymer
NCO content is 10-14wt.%, based on the isophorone diisocyanate polymer of the hydrophilic modifying or the weight of performed polymer
Based on 100wt.%.
In another embodiment, the isophorone diisocyanate polymer or performed polymer of the hydrophilic modifying
The isophorone diisocyanate poly being modified selected from polyether-modified isophorone diisocyanate performed polymer, sulfamate
Body and combinations thereof.
In another embodiment of the invention, acryl polyol, the polyester that the polyalcohol is selected from polyester modification are more
First alcohol and combinations thereof.
In a still further embodiment of the present invention, the composition further includes：(c) antioxidant.Preferably, the antioxidant choosing
From Hinered phenols antioxidant, organic phosphite antioxidant or combinations thereof.Preferably, the content of the antioxidant is 0.01-
5wt.%, the total weight of solids based on the waterborne two-component polyurethane coating composition is based on 100wt.%.
In a still further embodiment of the present invention, the waterborne two-component polyurethane coating composition further includes：(d) aqueous poly-
Urethane dispersion.
Another aspect of the present invention is related to a kind of coated article, and the coated article includes substrate and applies on the substrate
Film, the film prepared according to above-mentioned waterborne two-component polyurethane coating composition.Preferably, film dries at 150 DEG C
Value of chromatism after 1 day roasting is less than 3.0, and the value of chromatism is tested and calculated respectively according to GB11186.2 and GB11186.3.
Specific implementation mode
I.Waterborne two-component polyurethane coating composition
In an embodiment of the invention, a kind of waterborne two-component polyurethane coating composition, the bi-component are provided
Aqueous polyurethane coating composition includes：
(a) one or more polyalcohol water-borne dispersions or water-based emulsion, wherein the hydroxy radical content of the polyalcohol is
0.5-5.5wt.%, the weight based on the polyalcohol is based on 100wt.%, the polyalcohol water-borne dispersions or water-based emulsion
Solid content be 10-70wt.%, the total weight based on the polyalcohol water-borne dispersions or water-based emulsion is based on 100wt.%；
(b) the isophorone diisocyanate polymer or performed polymer of one or more hydrophilic modifyings；
The content of the wherein described component (a) and (b) make NCO group in the waterborne two-component polyurethane coating composition
Equivalent proportion with hydroxyl is 0.2: 1 to 5: 1.In a preferred embodiment, the content of the component (a) and (b) make institute
It is 1.2: 1 to 1.5: 1 to state NCO group and the equivalent proportion of hydroxyl in waterborne two-component polyurethane coating composition.
As used in this application, " polyurethane coating " has meaning well-known to those skilled in the art.Bi-component waterborne
Polyurethane coating can also include color stuffing commonly used in the art, solvent, catalyst in addition to being organized exceptionally comprising above-mentioned (a) and (b)
And the components such as auxiliary agent.
(a) polyalcohol
Polyalcohol in aqueous polyurethane coating field can be commonly used for by being applicable in the polyalcohol of the present invention comprising molecular weight
(Mn) be 400-6000, be preferably the polyalcohol of 400-3000.The polyalcohol is in the form of water-borne dispersions or water-based emulsion
It uses, is used preferably in the form of water-borne dispersions.The water-borne dispersions or water-based emulsion of polyol component can be by water phases
Prepared by the method for middle emulsion polymerization, this method is known to those skilled in the art, such as in B.Vollmert,
" GrundrissderMakromolekularen Chemie ", the first volume, page 181 hereinafter, Vollmert Verlag1988,
Karlsruhe or H.G.Elias, " Makromolek ü le ", volume Two, page 93 are hereinafter, H ü thig＆Wepf Verlag
Explanation in Basel, Heidelberg, New York1992.
The example of the polyalcohol includes, but are not limited to：
1) polyester polyol, the polyester polyol are made by dicarboxylic acids or dicarboxylic acid anhydride with polyol reaction.Institute
The dicarboxylic acids stated is preferably but not limited to the aliphatic carboxylic acid containing 2-12 carbon atom, the fat containing 2-12 carbon atom
Race's carboxylic acid is preferably but not limited to succinic acid, malonic acid, glutaric acid, adipic acid, suberic acid, azelaic acid, decanedioic acid, dodecyl
Carboxylic acid, maleic acid, fumaric acid, phthalic acid, isophathalic acid, terephthalic acids or their mixture.Described two
First carboxylic acid anhydrides is preferably but not limited to phthalic anhydride, tetrachlorophthalic anhydride, maleic anhydride or their mixture.Described is polynary
Alcohol is preferably but not limited to ethylene glycol, diethylene glycol (DEG), 1,2-PD, 1,3-PD, dipropylene glycol, 1,3- methyl propanediols, 1,
4- butanediols, 1,5-PD, 1,6- hexylene glycols, neopentyl glycol, 1,10- decanediols, glycerine, trimethylolpropane or it
Mixture.The polyester polyol further includes the polyester polyol prepared by lactone.The polyester prepared by lactone
Polyalcohol is preferably but not limited to, 6-caprolactone.
2) polycarbonate polyol, the makrolon are obtained with reacting for dihydric alcohol by carbonic acid derivative, carbon
The example of acid derivative includes but not limited to diphenyl carbonate, dimethyl carbonate or phosgene.The suitable example packet of dihydric alcohol
Include but be not limited to ethylene glycol, 1,2- and 1,3-PD, 1,3- and 1,4-butanediol, 1,6- hexylene glycols, 1,8- ethohexadiols, new penta
The bis- methylol hexamethylenes of glycol, Isosorbide-5-Nitrae-, 2- methyl-1s, 3-propanediol, 2,2,4- trimethyls amyl- 1,3- glycol, gather at dipropylene glycol
Propylene glycol, dibutylene glycol, polytetramethylene glycol, bisphenol-A, tetrabromobisphenol A and lactone-modified dihydric alcohol.Dihydric alcohol preferably comprises
The hexylene glycol of 40-100wt.%, preferably 1,6- hexylene glycols and/or hexane diol derivatives, particularly preferably they are in addition to terminal hydroxy group
Also contain ether or ester group.Polycarbonate polyol is preferably line style, but it can be suitably incorporated into multifunctional component, special
It is not low molecular weight polyols, and there is the low degree of branching.The examples of compounds for being suitable for this purpose includes but not limited to third
Triol, trimethylolpropane, 1,2,6- hexanetriols, 1,2,4-butanetriol, trimethylolpropane, pentaerythrite, quinite,
Mannitol and D-sorbite, methyl are with sugar or 1,3,4,6- bis- dewatering hexitols.
3) polyether polyol, the polyether polyol can be reacted with initiator in the presence of catalyst by alkylene oxide
It is made.The catalyst, be preferably but not limited to alkaline hydrated oxide, alkaline alkoxide, Antimony pentachloride, boron fluoride close ether or
Their mixture.The alkylene oxide is preferably but not limited to tetrahydrofuran, ethylene oxide, 1,2- propylene oxide, 1,2-
Epoxy butane, 2,3- epoxy butanes, styrene oxide or their mixture.The initiator, is preferably but not limited to polyhydroxy
Based compound, the polyol, be preferably but not limited to water, ethylene glycol, 1,2-PD, 1,3-PD, diethylene glycol (DEG),
Trimethylolpropane or their mixture.The polyether polyol that polyvinyl is modified can be used for the present invention, this kind of
Product can polymerize in the presence of polyethers with acrylonitrile for example, by styrene and be made (U.S. Patent No. 3,383,351,3,304,
273,3,523,095 and No. 3,110,695；German Patent No. 1,152,536).
4) polythiaether, for example, by thiodiglycol self-condensation and/or with other glycol, dicarboxylic acids, formaldehyde, amino carboxylic acid or
Amino alcohol reaction condensation product obtained.The product is polysulfide generation mixed ether (polythio-mixed ether), polythiaether
Ester or polysulfide polyetheresteramide, are specifically dependent upon the component being used in conjunction with.
5) polyacetals, including by above-mentioned polyalcohol, especially diethylene glycol (DEG), triethylene glycol, 4,4 '-dioxy base oxethyls-hexichol
The polyacetals that base dimethylene, 1,6- hexylene glycols are obtained with formaldehyde.Cyclic ketal can also be passed through by being suitable for the invention polyacetals
Polymerization is made.
6) polyether ester as known in the art containing isocyanates-reactive group.
7) polyesteramide and polyamide, include by multivalence saturation or unsaturated carboxylic acid or their acid anhydrides and multivalence saturation or
The condensation product of basic straight chain prepared by unsaturated amino alcohols, diamines, polyamines or their mixture.
In an embodiment of the invention, polyalcohol be selected from polyester modification acryl polyol, polyester polyol or its
Combination, and used preferably in the form of water-borne dispersions.
The solid content of polyester modification acryl polyol water-borne dispersions for use in the present invention can be 30wt.-
60wt.% can also be 38wt.-45wt.%, and the total weight based on the dispersion is based on 100wt.%；Its hydroxy radical content can
Think 0.5wt.-5.5wt.%, can also be 3.5wt.%-4.5wt.%, the solid content based on the dispersion is pressed
100wt.% is counted.The example of the acryl polyol of polyester modification for use in the present invention includes but not limited to：Purchased from Bayer
Bayhydrol A2227/1 and the Bayhydrol A2058 of Materials Co., Ltd.
The solid content of polyester polyol water-borne dispersions for use in the present invention can be 10wt.-70wt.%, may be used also
Think 35wt.-45wt.%, the total weight based on the dispersion is based on 100wt.%；Its hydroxy radical content can be 0.5wt.-
5.5wt.% can also be 1.5wt.%-4.6wt.%, and the solid content based on the dispersion is based on 100wt.%.It can use
Include but not limited in the example of the polyester polyol of the present invention：Bayhydrol U XP2766 and Bayhydrol U
XP2755。
(b) the isophorone diisocyanate polymer or performed polymer of hydrophilic modifying
As used in this application, " isophorone diisocyanate (IPDI) polymer " refers to the IPDI polyisocyanate cyanogen of non-close
Acid esters self-aggregate can be the mixture of the self-aggregate of the isophorone diisocyanate with different polymerization degree.Preferably,
IPDI polymers are IPDI tripolymers.
Isophorone diisocyanate performed polymer can be used for the present invention.Isophorone diisocyanate performed polymer refers to
Isophorone diisocyanate reacts with co-reactant being blocked using polyurethane segment as skeleton, with NCO group for gained in advance
The polymer of intermediate molecular weight.Suitable co-reactant includes polyamines and polyalcohol.The example of suitable polyamines includes but unlimited
In primary amine and secondary amine and its mixture, the polyureas that amine can also be used to block.Including the amine of tertiary amine functional group can be used for this
Invention, condition are that the amine also includes at least two primary amino groups and/or secondary amino group.The example of suitable polyalcohol includes but not limited to
(such as amino-functional polyureas and hydroxyl-functional (methyl) acrylate step for polyether polyol, polyester polyol, polyurea polylol
Ke Er reaction products), polycaprolactone polyol, polycarbonate polyol, polyurethane polyol, polyvinyl alcohol, have branch hydroxyl
The addition polymers of the unsaturated monomer (such as (methyl) acrylate, allyl alcohol and its mixture containing hydroxyl-functional) of base.It can
Example as isophorone diisocyanate performed polymer of the present invention includes but not limited to401-70。
Isophorone diisocyanate polymer or performed polymer for use in the present invention are the isophorone two of hydrophilic modifying
Isocyanates polymer or performed polymer.The hydrophilic modifying side of the known polyisocyanates polymer of those skilled in the art or performed polymer
Method, such as " hydrophilically modified polyisocyanates (Zhang Faai etc., chemistry notification, 2004, volume 67, w002) ".
Isophorone diisocyanate polymer or performed polymer can pass through nonionic and/or anionic hydrophilic method of modifying system
It is standby.Wherein nonionic hydrophilic modification method can be carried out according to method disclosed in EP-A0540985 and EP-A0959087.The moon from
Sub- hydrophilic modifying can be carried out using phosphate, sulfuric ester or sulfonate ester group.Herein, it is preferable to use sulfonate group
Group, is particularly preferably modified using sulfamic acid salt groups, these groups are present in polyisocyanates in the form of chemical bond
In.
In the present invention, isophorone diisocyanate polymer or performed polymer can also be disclosed according to EP-A0510438
Method carry out mixing hydrophilic modifying, i.e., carried out simultaneously using nonionic polyoxyalkylene group and anion or potential ionic group hydrophilic
It is modified.
In a preferred embodiment of the invention, the IPDI polymers of hydrophilic modifying are selected from what sulfamate was modified
The IPDI performed polymers of IPDI polymers, hydrophilic modifying are selected from polyether-modified IPDI performed polymers.
The polyether-modified IPDI performed polymers, solid content are preferably but not limited to, 60-100wt.%, particularly preferred 68-
72wt.%.Its NCO content is preferably but not limited to, 10-20%, particularly preferred 13-14%.The sulfamate is modified IPDI
Polymer, solid content are preferably but not limited to, 60-100wt.%, particularly preferred 68-72%.Its NCO content is preferred but unlimited
In 10-20%, particularly preferred 10-12%.
(c) aqueous polyurethane dispersion
As used in this application, it refers to being scattered in aqueous medium containing at least one to belong to " aqueous polyurethane dispersion "
Polyurethane or polyurethaneurea polymer or copolymer composition, wherein aqueous medium such as water, including deionized water.The art
Language further includes by dry above-mentioned composition.
In an embodiment of the invention, the solid content of the polyurethane aqueous dispersions is 30-70wt.%, preferably
For 55-65wt.%, based on the total weight of polyurethane aqueous dispersions based on 100wt.%.
(d) antioxidant
In an embodiment of the invention, waterborne two-component polyurethane coating composition also includes antioxidant.Apply for people's will
Other places finds that, when the coating includes antioxidant, gained coating has better resisting high-temperature yellowing.Antioxidant can be applied
Any commonly employed antioxidant in material field, it is preferable that it is anti-that the antioxidant is selected from Hinered phenols antioxidant, organic phosphites
Oxygen agent or combinations thereof.Illustrative Hinered phenols antioxidant is the different monooctyl ester of 3,5- di-t-butyl -4- hydroxy phenylpropionic acids, such as Ciba
Irganox1135.Illustrative organic phosphites antioxidant is, such as Ciba IRGAFOS168.
Those skilled in the art can according to scheduled purposes and it is actual it needs to be determined that antioxidant content, for example,
0.01-5wt.%, the total weight of solids based on the waterborne two-component polyurethane coating composition is based on 100wt.%.
(e) pigment and filler
According to the intended purpose of coating composition, coating composition can be transparent (do not include pigment), translucent
Or containing pigment.Therefore coating composition can contain transparent filler and imparting coating composition color and/or effect
Pigment.Organic and inorganic pigment, coloring pigment, fillibility pigment, rheology can be selected from by assigning the pigment of color and/or effect
Controlling pigment, visual effect pigments, conductive pigment, electromagnetic shielding performance pigment and fluorescent pigment, metallic pigments or metal powder
Last, organic and inorganic filler, transparent or covering filler and nano-particle pigment.Assign the inorganic or organic face of color
The example of material includes but not limited to titanium dioxide, micronized titanium dioxide, iron oxide pigment, carbon black, azo pigments, phthalocyanine face
Material, quinacridone or pyrrolo-pyrrole pigments.The example for assigning the pigment of effect includes but not limited to metallic pigments, coated interference pigment
(such as metal oxide coated metallic pigments, such as titanium dioxide-coated or mixed oxide are coated with aluminium), coated mica (such as
Titanium dioxide-coated mica) and similar graphite effect special effect pigments.The example of filler includes but not limited to three hydrations
Aluminium oxide, silica, alumina silicate, barium sulfate, calcium carbonate and talcum.
Those skilled in the art can determine the dosage of pigment and filler, such as 0- according to scheduled purposes and actual needs
200wt.%, based on the total weight of coating composition based on 100wt.%.
(f) solvent
The coating composition of the present invention contains the water as liquid diluent, and optionally it can also contain organic co-solvent
Agent.The amount of organic cosolvent is maintained at bottom line.
Water for coating composition of the present invention is preferably deionized water, and content can be 1-90wt.%, preferably
30-70wt.%, based on the total weight of coating composition based on 100wt.%.
The example for the organic cosolvent that can reside in water includes but not limited to glycol ether ester, such as acetic second
Diol ester, acetic acid butyldiglycol ester, acetic acid methoxy propyl base ester；Ester, such as propylene carbonate (4- methyl-1s, 3- dioxies penta
Ring -2- ketone), ethyl acetate, butyl acetate, isobutyl acetate, pentyl acetate；Ketone, for example, methyl ethyl ketone, methyl propyl ketone,
Methyl isopropyl Ketone, methyl iso-butyl ketone (MIBK), diisobutyl ketone, methyl amyl ketone, cyclohexanone, isophorone；Aromatic hydrocarbons, such as first
Benzene, dimethylbenzene, Solvesso100 (aromatic hydrocarbons mixture that boiling range is 155-185 DEG C), Solvesso150 (boiling range 182-202
DEG C aromatic hydrocarbons mixture) and aliphatic hydrocarbon.Organic co-solvent agent content can be 0-15wt.%, preferably 0-5wt.%, based on painting
The total weight of feed composition is based on 100wt.%.
(g) other auxiliary agents
In addition to said components (c) antioxidant, coating composition of the invention can also contain at least one auxiliary agent.The auxiliary agent
Can be selected from auxiliary agent commonly used in the art, such as wetting dispersing agent, substrate wetting agents, auxiliary rheological agents, plasticizer, levelling agent,
Antifoaming agent and catalyst.Above-mentioned term all has meaning known to those skilled in the art.
Auxiliary agent can in or after the process add, or can be first polynary with above-mentioned (a) before coating composition mixing
After alkoxide component or (b) isocyanate component mixing, gained mixture is mixed with other components again.
Those skilled in the art can determine the type and dosage of required auxiliary agent, example according to scheduled purposes and actual needs
If the dosage of wetting dispersing agent can be 0-5wt.%, the dosage of levelling agent can be 0-4.5wt.%, the use of substrate wetting agents
Amount can be 0-3wt.%, and the dosage of antifoaming agent can be 0-2.2wt.%, and the dosage of auxiliary rheological agents can be 0-4wt.%, with
Upper dosage is based on the total weight of the solid of coating composition based on 100wt.%.
The coating composition of the present invention can be made as follows：In aqueous medium, for example, by high-speed mixer,
Dissolvers or above-mentioned each component of online dissolvers (In-Line-Dissolver) mixing and dispersed coating composition.
II.Coated article
Another aspect of the present invention additionally provides a kind of coated article, the coated article include substrate and be coated in the substrate
On film, the film prepared according to above-mentioned waterborne two-component polyurethane coating composition.Waterborne two-component polyurethane coating
Composition can be by preparing coating system provided by the invention to be administered in substrate well known to a person skilled in the art method
Product, these methods include but not limited to blade coating, rod coating, spraying, roller coating, brushing, flow coat, cutter painting and dip-coating.One of the invention
In embodiment, the coating composition is administered to by way of blade coating or rod coating in substrate.In an embodiment of the invention,
Before being administered in substrate, first each component of coating composition of the present invention is mixed to form the present invention in single container
Coating composition.The each component of the coating composition of the present invention can also be fed to bi-component or plural component spray gun respectively
In, each component in spray gun to mix, then is sprayed in substrate and forms film, to prepare the coated article of the present invention.
Specifically, it can be 1-500 μm, preferably 3-150 μm for single layer film.The final coating of multilayer film
Thickness can be predefined as 10-2000 μm, preferably 50-1000 μm, and can be to spray 10-150 μ every time according to intended purpose
The increment of m is formed.
The coating of the coating composition of the present invention can carry out at room temperature or at a temperature of higher or lower than room temperature.
Before starting solidification under high temperature, there may be of short duration sudden strains of a muscle to do the stage, but the stage is not required in that.Solidification temperature can be with
Change in 5-200 DEG C, can particularly change in 20-150 DEG C, most preferably 100-150 DEG C.Hardening time can be
Such as 5 minutes to 24 hours.Preferably, coating composition of the invention is crosslinked 24 hours at a temperature of 20-35 DEG C, Huo Zhe
It is crosslinked 30-60 minutes at a temperature of 80-150 DEG C.
Cured film can be sanded and/or be polished to obtain the smooth surface of required thickness.The base material or product of coating
Required shape can be cut into.The film of coated article provided by the invention not only has good mechanical performance, has simultaneously
Good resisting high-temperature yellowing, the film toasted 1 day at 150 DEG C after value of chromatism be less than 3.0, the value of chromatism according to
“GB11186.2《The measurement method of film color》Second part (color measuring) " is tested, according to " GB11186.3《Film
The measurement method of color》Part III (Colorimetry) " is calculated.
Waterborne two-component polyurethane coating composition provided by the invention can be applied in any substrate, the substrate
Example includes but not limited to：Timber, plastics, paper, fabric, leather, glass, ceramics, gypsum, masonry, concrete, metal (example
Such as iron, steel and aluminium) or film.The film can be the film that the coating composition of the present invention is formed after coating, can also
It is the film formed after other coating compositions apply.
Further aspect of the present invention is related to above-mentioned waterborne two-component polyurethane coating composition and is used to prepare above-mentioned coated article
Purposes.
The present invention is explained in greater detail below by preparation embodiment.
Embodiment
With reference to specific embodiment, the present invention is further explained.Although it is understood that these embodiments are only used for
Illustrate the present invention and is not meant to limit the scope of the invention.The test method of actual conditions is not specified in the following example, leads to
Often according to normal condition, or carry out according to the normal condition proposed by manufacturer.Unless otherwise indicated, all percentage and number
By weight.
Mentioned raw material is as shown in the table herein.
In each embodiment of the present invention, the resisting high-temperature yellowing of the film made from coating composition of the present invention is tested
And other performance, as shown in table 1 below.In table 1, each test event and corresponding testing standard or method, corresponding are listed
Ground selection and pretreatment and corresponding test sample preparation method, wherein value of chromatism (Δ E) must apply for weight
The resisting high-temperature yellowing of material.
Table 1：The preparation method of each test event and testing standard or method, the selection of ground and pretreatment, test sample
Component A is the component being prepared based on aqueous polyol dispersions or lotion, and component B is to be based on containing isocyanic acid
The curing agent component of ester group.
Comparative example C1
The comparative example of C1 series has selected the hexa-methylene of 9 kinds of different aqueous polyol dispersions and hydrophilic modifying
Diisocyanate (HDI) polymer is as coating film forming matter.
Below by taking C1-1 as an example, illustrate the preparation method of formula.C1-2 to C1-9 and C1-1 difference lies in：Match in coating
Different types of aqueous polyol dispersions, but the preparation of curing agent, auxiliary agent and formula selected in formula are used in side instead
Method is identical as C1-1.
The preparation of component A
50.00g Bayhydrol A145 are put into agitator vessel, are stirred under the rotating speed of 1200rpm, are delayed successively
Slow input 0.10g Borchi-Gel PW25,0.20g BYK024,0.70g TEGODispers752W, 13.8g R960,
5.45g deionized waters then improve speed of agitator to 3000rpm, and this rotating speed are kept to disperse 25 minutes, check fineness at this time,
If fineness≤15 μm stop high speed dispersion；If 15 μm of fineness ＞, should continue high speed dispersion, until fineness≤15 μm
Until.Behind fineness≤15 μm, mixing speed is reduced to 1000rpm, slowly puts into 0.6g BYK348, and this rotating speed is kept to stir
It mixes 5 minutes, that is, completes the preparation of component A.
Component A, with the strainer filtering of 400 mesh, and is stored 24 hours using preceding elder generation in sealing container.
The preparation of component B
Component B is Bayhydur2655, with MPA with curing agent: MPA=3: 1 dilution proportion.
Sample preparation and test
It is formulated according to shown in the following table 2, component A and component B 70.85/17.30 precises, machinery in mass ratio is stirred
Mix make within 5 minutes component A and component B uniformly mixing to get to waterborne two-component polyurethane coating.According to the ground listed by table 1, bottom
Material preprocess method and method for making sample carry out sample preparation, then measure the value of chromatism of sample, and test result is as follows shown in table 3.
The formula of 2 comparative example C1-1 to C1-9 of table
The resisting high-temperature yellowing test result of 3 comparative example C1 series of table
It is by the test result of table 3 it is found that different using the hexa-methylene two of various aqueous polyol dispersions and hydrophilic modifying
Cyanate (HDI) polymer as film made from coating film forming matter, by 150 DEG C of high-temperature bakings for 24 hours after, have occurred apparent
Yellowing, value of chromatism Δ E are all higher than 3, it is difficult to realize excellent resisting high-temperature yellowing.Applicant has found simultaneously, different
Aqueous polyol dispersions, resisting high-temperature yellowing are also not quite similar, wherein Bayhydrol A2227/1 and Bayhydrol U
XP2766 shows relatively good resisting high-temperature yellowing in comparative example C1 series formula.
Comparative example C2 series
The comparative example of C2 series has selected Bayhydrol A2227/1 as aqueous polyol dispersions, selects
Different types of hexamethylene diisocyanate (HDI) polymer that can be used in aqueous polyurethane coating with bi component is as painting
Expect curing agent.
Below by taking C2-1 as an example, illustrate the preparation method of formula.C2-2 to C2-6 and C2-1 difference lies in：Match in coating
It has been used instead in side and different types of has used different types of hexamethylene diisocyanate (HDI) poly instead in formulation for coating material
Body, but the preparation method of aqueous disperse polyol selected in being formulated, auxiliary agent and formula is identical as C2-1.
The preparation of component A
50.00Bayhydrol A2227/1 are put into agitator vessel, are stirred under the rotating speed of 1200rpm, are delayed successively
Slow input 0.10g Borchi-Gel PW25,0.2g BYK024,0.7g TEGODispers752W, 13.8g R960,5.45g
Deionized water then improves speed of agitator to 3000rpm, and this rotating speed is kept to disperse 25 minutes, fineness is checked at this time, if fineness
≤ 15 μm, then stop high speed dispersion；If 15 μm of fineness ＞, should continue high speed dispersion, until the μ n of fineness≤15.When
Behind fineness≤15 μm, mixing speed is reduced to 1000rpm, slowly puts into 0.6g BYK348, and this rotating speed is kept to stir 5 minutes,
Complete the preparation of component A.
Component A, with the strainer filtering of 400 mesh, and is stored 24 hours using preceding elder generation in sealing container.
The preparation of component B
Component B is Bayhydur3100, with MPA with curing agent: MPA=3: 1 dilution proportion.
Sample preparation and test
It by component A and component B 70.85/22.67 precises in mass ratio, is mixed using mechanical agitation, stirring 5
Minute, so that component A and component B is sufficiently mixed uniformly.With after the strainer filtering of 400 mesh i.e. can be used.
It is formulated according to shown in the following table 4, component A and component B 70.85/17.30 precises, machinery in mass ratio is stirred
Mix make within 5 minutes component A and component B uniformly mixing to get to waterborne two-component polyurethane coating.According to the ground listed by table 1, bottom
Material preprocess method and method for making sample carry out sample preparation, then measure the value of chromatism of sample, and test result is as follows shown in table 5.
The formula of 4 comparative example C2-1 to C2-6 of table
Table 5：The resisting high-temperature yellowing test result of comparative example C2 series
By the test result of table 5 it is found that using preferred aqueous polyol dispersions can disperse in water with various
Hexamethylene diisocyanate (HDI) polymer as film made from coating film forming matter, for 24 hours by 150 DEG C of high-temperature bakings
Afterwards, apparent Yellowing has occurred, value of chromatism Δ E is all higher than 3, it is difficult to realize excellent resisting high-temperature yellowing.
Embodiment E1
The preparation of component A
50.00g Baydrol A2227/1 are put into agitator vessel, are stirred under the rotating speed of 1200rpm, are delayed successively
Slow input 0.10g Borchi-Gel PW25,0.2g BYK024,0.7g TEGO Dispers752W, 13.8g R960,
5.45g deionized waters then improve speed of agitator to 3000rpm, and this rotating speed are kept to disperse 25 minutes, check fineness at this time,
If fineness≤15 μm stop high speed dispersion；If 15 μm of fineness ＞, should continue high speed dispersion, until fineness≤15 μm
Until.Behind fineness≤15 μm, mixing speed is reduced to 1000rpm, slowly puts into 0.6g BYK348, and this rotating speed is kept to stir
It mixes 5 minutes, that is, completes the preparation of component A.
Component A, with the strainer filtering of 400 mesh, and is stored 24 hours using preceding elder generation in sealing container.
The preparation of component B
Component B is Bayhydur XP2759, is sulfamate modified isophorone diisocyanate (IPDI) poly
Body, with MPA with curing agent: MPA=3: 1 dilution proportion.
Sample preparation and test
It by component A and component B 70.85/51.21 precises in mass ratio, is mixed using mechanical agitation, stirring 5
Minute, so that component A and component B is sufficiently mixed uniformly.With after the strainer filtering of 400 mesh i.e. can be used.
Sample preparation is carried out according to ground, pre-treatment of substrate method and the method for making sample listed by table 1, then measures the aberration of sample
Value, test result is as follows shown in table 6.
The resisting high-temperature yellowing test result of 6 embodiment E1 of table
In the present embodiment, sulfamate modified isophorone diisocyanate (IPDI) polymer has been used
Bayhydur XP2759 as curing agent, film obtained by 150 DEG C of high-temperature bakings for 24 hours after, apparent Huang does not occur
Become phenomenon, value of chromatism △ E are respectively less than 3, hence it is evident that better than comparative example C1 series and C2 series.
Embodiment E2
The preparation of component A
50.00g Baydrol A2227/1 are put into agitator vessel, are stirred under the rotating speed of 1200rpm, are delayed successively
Slow input 0.10g Borchi-Gel PW25,0.2g BYK024,0.7g TEGODispers752W, 13.8g R960,5.45g
Deionized water then improves speed of agitator to 3000rpm, and this rotating speed is kept to disperse 25 minutes, fineness is checked at this time, if fineness
≤ 15 μm, then stop high speed dispersion；If 15 μm of fineness ＞, should continue high speed dispersion, until fineness≤15 μm.When
Behind fineness≤15 μm, mixing speed is reduced to 1000rpm, slowly puts into 0.6g BYK348, and this rotating speed is kept to stir 5 minutes,
Complete the preparation of component A.
Component A, with the strainer filtering of 400 mesh, and is stored 24 hours using preceding elder generation in sealing container.
The preparation of component B
Component B is Bayhydur XP401-70, is polyether-modified isophorone diisocyanate (IPDI) polymer, uses
MPA is diluted with curing agent/MPA=3/1.
Sample preparation and test
It by component A and component B 70.85/33.52 precises in mass ratio, is mixed using mechanical agitation, stirring 5
Minute, so that component A and component B is sufficiently mixed uniformly.With after the strainer filtering of 400 mesh i.e. can be used.
According to current embodiment require that the project tested, according to ground, pre-treatment of substrate method and the sample preparation listed by table 1
Method carries out sample preparation.For embodiment E2 after (150 DEG C) bakings of high temperature, the test result of value of chromatism is listed in table 8.
The resisting high-temperature yellowing test result of 8 embodiment E2 of table
Therefore embodiment E2 is according to the test result of comparative example C1 series, preferably Bayhydrol
Polyether-modified isophorone diisocyanate (IPDI) polymer has been used alone as aqueous polyol dispersions in A2227/1
Bayhydur XP401-70 as curing agent, film obtained by 150 DEG C of high-temperature bakings for 24 hours after, do not occur apparent
Yellowing, value of chromatism △ E are respectively less than 3, hence it is evident that better than comparative example C1 series and C2 series.It can be seen that exclusive use amino
Sulfonate modified isophorone diisocyanate (IPDI) polymer Bayhydur XP401-70 are as curing agent to improving double groups
The resisting high-temperature yellowing of aqueous polyurethane coating is divided to play the role of vital.
Embodiment E3
The preparation of component A
50.00g Baydrol U XP2766 are put into agitator vessel, are stirred under the rotating speed of 1200rpm, successively
Slowly input 0.10g Borchi-Gel PW25,0.2g BYK024,0.7g TEGODispers752W, 13.8g R960,
5.45g deionized waters then improve speed of agitator to 3000rpm, and this rotating speed are kept to disperse 25 minutes, check fineness at this time,
If fineness≤15 μm stop high speed dispersion；If 15 μm of fineness ＞, should continue high speed dispersion, until fineness≤15 μm
Until.Behind fineness≤15 μm, mixing speed is reduced to 1000rpm, slowly puts into 0.6g BYK348, and this rotating speed is kept to stir
It mixes 5 minutes, that is, completes the preparation of component A.
Component A, with the strainer filtering of 400 mesh, and is stored 24 hours using preceding elder generation in sealing container.
The preparation of component B
Component B is Bayhydur XP401-70, is polyether-modified isophorone diisocyanate (IPDI) polymer, uses
MPA is diluted with curing agent/MPA=3/1.
Sample preparation and test
It by component A and component B 70.85/33.7 precises in mass ratio, is mixed using mechanical agitation, stirs 5 points
Clock makes component A and component B be sufficiently mixed uniformly.With after the strainer filtering of 400 mesh i.e. can be used.According to current embodiment require that into
The project of row test carries out sample preparation according to ground, pre-treatment of substrate method and the method for making sample listed by table 1.Embodiment E3 is through height
After (150 DEG C) bakings of temperature, the test result of value of chromatism is listed in table 9.
Table 9：The resisting high-temperature yellowing test result of embodiment E3
Therefore embodiment E3 is according to the test result of comparative example C1 series, preferably Bayhydrol U
Polyether-modified isophorone diisocyanate (IPDI) polymer has been used alone as aqueous polyol dispersions in XP2766
Bayhydur XP401-70 as curing agent, film obtained by 150 DEG C of high-temperature bakings for 24 hours after, do not occur apparent
Yellowing, value of chromatism △ E are respectively less than 3, hence it is evident that better than comparative example C1 series and C2 series.It can be seen that exclusive use amino
Sulfonate modified isophorone diisocyanate (IPDI) polymer Bayhydur XP401-70 are as curing agent to improving double groups
The resisting high-temperature yellowing of aqueous polyurethane coating is divided to play the role of vital.
Embodiment E4
The preparation of component A
40.70g Baydrol A2227/1 are put into agitator vessel, are stirred under the rotating speed of 1200rpm, are delayed successively
Slow input 0.10g Borchi-Gel PW25,0.2g BYK024,0.7g TEGODispers752W, 13.8g R960,5.45g
Deionized water then improves speed of agitator to 3500rpm, and this rotating speed is kept to disperse 25 minutes.Disc type dispersion impeller is changed to
Special dispersing head is sanded, under middle low speed (about 800rpm) stirring, pearl is sanded in input about 60g, improves speed of agitator extremely
3000rpm, and this rotating speed is kept to be sanded 60 minutes, fineness is checked at this time, if fineness≤15 μm, stops being sanded；If fineness ＞
15 μm, then it should continue to be sanded, until fineness≤15 μm.
The above material is filtered using the strainer of 100-200 mesh, mixing speed is reduced to 1000rpm, slowly puts into
0.6g BYK348,1g Ciba Irganox1135,3.6g Texanol, add 0.50gBorchi-Gel PW25, and keep
This rotating speed stirs 5 minutes, that is, completes the preparation of component A.
Component A, with the strainer filtering of 400 mesh, and is stored 24 hours using preceding elder generation in sealing container.
The preparation of component B
Component B is Bayhydur XP2759, is sulfamate modified isophorone diisocyanate (IPDI) poly
Body is diluted with MPA with curing agent/MPA=3/1.
Sample preparation and test
It by component A and component B 66.15/33.30 precises in mass ratio, is mixed using mechanical agitation, stirring 5
Minute, so that component A and component B is sufficiently mixed uniformly.With after the strainer filtering of 400 mesh i.e. can be used.According to current embodiment require that
The project tested carries out sample preparation according to ground, pre-treatment of substrate method and the method for making sample listed by table 1.Embodiment E4 warps
After (150 DEG C) bakings of high temperature, the test result of value of chromatism is listed in table 10.
The resisting high-temperature yellowing test result of 10 embodiment E4 of table
Therefore embodiment E4 is according to the test result of comparative example C1 series, preferably Bayhydrol
Sulfamate modified isophorone diisocyanate (IPDI) has been used alone as aqueous polyol dispersions in A2227/1
Polymer Bayhydur XP2759 are added to Hinered phenols antioxidant Irganox1135 in formula as curing agent,
After 150 DEG C of high-temperature baking 96h apparent Yellowing does not occur for its film obtained, and value of chromatism △ E are less than 3, no
It is only substantially better than comparative example C1 series and C2 series, and is better than embodiment E1.It can be seen that adding Hinered phenols in formula
Antioxidant plays certain effect to the resisting high-temperature yellowing for improving waterborne two-component polyurethane coating.
Embodiment E5
The preparation of component A
35.06g Baydrol A2227/1,10.52g Impranil LP RSC1537 are put into agitator vessel,
It is stirred under the rotating speed of 1200rpm, slowly puts into 0.13g Borchi-Gel PW25,0.2gBYK024,0.7g TEGO successively
Dispers752W, 14.45g R960,5.02g deionized water then improve speed of agitator to 3500rpm, and keep this rotating speed
Dispersion 25 minutes.Disc type dispersion impeller is changed to, Special dispersing head is sanded, under middle low speed (about 800rpm) stirring, input is about
Pearl is sanded in 60g, improves speed of agitator to 3000rpm, and this rotating speed is kept to be sanded 60 minutes, checks fineness at this time, if fineness≤
15 μm, then stop being sanded；If 15 μm of fineness ＞ should continue to be sanded, until fineness≤15 μm.
The above material is filtered using the strainer of 100-200 mesh, mixing speed is reduced to 1000rpm, slowly puts into
0.6g BYK348,1g Ciba Irganox1135,3.39g Texanol, and this rotating speed is kept to stir 5 minutes, i.e. completion group
Divide the preparation of A.
Component A, with the strainer filtering of 400 mesh, and is stored 24 hours using preceding elder generation in sealing container.
The preparation of component B
Component B is Bayhydur2759, is diluted with curing agent/MPA=3/1 with MPA.
Sample preparation and test
It by component A and component B 71.28/28.73 precises in mass ratio, is mixed using mechanical agitation, stirring 5
Minute, so that component A and component B is sufficiently mixed uniformly.With after the strainer filtering of 400 mesh i.e. can be used.According to current embodiment require that
The project tested carries out sample preparation according to ground, pre-treatment of substrate method and the method for making sample listed by table 1.Take 100 degree of bakings
Condition of cure solidification in roasting 1 hour.The test event and Comparative result of embodiment E5 and embodiment E1 is listed in table 11.
The test event and Comparative result of table 11 embodiment E5 and embodiment E1
Compared with the formula of embodiment E1, embodiment E5 is by aqueous polyol dispersions Bayhydrol A2227/1 and water
Dispersions of polyurethanes Impranil LP RSC1537 are with 7/3 ratio (solid content) blending for property.By table 11 as it can be seen that ensureing
Under the premise of resisting high-temperature yellowing unobvious decline, flexibility of the paint film after high-temperature baking has obtained significant raising.
In conclusion the present invention selects water soluble acrylic acid polyol dispersions and poly- isophorone diisocyanate polymer
Or film forming matter of the performed polymer as coating, it is used to prepare the aqueous polyurethane coating of Bi-component high-temperature resistant, can be greatlyd improve
The resisting high-temperature yellowing of waterborne two-component polyurethane coating.Antioxidant is added in formula, bi-component water can be further increased
The resisting high-temperature yellowing of property polyurethane coating.The addition of aqueous polyurethane point dispersion simultaneously, effectively improves the coating system
Flexibility, making paint film, not only xanthochromia is small after high-temperature baking, but also flexibility is good.In addition, the coating has longer make
With phase, faster drying time, good hardness and excellent chemical-resistant.
Claims (9)
1. a kind of waterborne two-component polyurethane coating composition, the waterborne two-component polyurethane coating composition include：
(a) one or more polyalcohol water-borne dispersions or water-based emulsion, wherein the hydroxy radical content of the polyalcohol is 0.5-
5.5wt.%, the weight based on the polyalcohol based on 100wt.%, consolidate by the polyalcohol water-borne dispersions or water-based emulsion
Content is 10-70wt.%, and the total weight based on the polyalcohol water-borne dispersions or water-based emulsion is based on 100wt.%；
(b) the isophorone diisocyanate polymer or performed polymer of one or more hydrophilic modifyings；
The wherein described component (a) and content (b) make NCO group and hydroxyl in the waterborne two-component polyurethane coating composition
The equivalent proportion of base is 0.2: 1 to 5: 1；The waterborne two-component polyurethane coating composition also includes：(c) antioxidant；It is described anti-
Oxygen agent is selected from Hinered phenols antioxidant, organic phosphite antioxidant or combinations thereof；The content of the antioxidant is 0.01-
5wt.%, the total weight of solids based on the waterborne two-component polyurethane coating composition is based on 100wt.%.
2. waterborne two-component polyurethane coating composition according to claim 1, wherein the different Fo Er of the hydrophilic modifying
The NCO content of ketone diisocyanate polymer or performed polymer is 10-14wt.%, the isophorone two based on the hydrophilic modifying
Isocyanates polymer or the weight of performed polymer are based on 100wt.%.
3. waterborne two-component polyurethane coating composition according to claim 1, wherein the different Fo Er of the hydrophilic modifying
Ketone diisocyanate polymer or performed polymer are selected from polyether-modified isophorone diisocyanate performed polymer, sulfamate changes
The isophorone diisocyanate polymer and combinations thereof of property.
4. waterborne two-component polyurethane coating composition according to claim 1, wherein the polyalcohol changes selected from polyester
The acryl polyol of property, polyester polyol and combinations thereof.
5. waterborne two-component polyurethane coating composition according to claim 1, the component (a) and the content of (b) make
It is 1.2: 1 to 1.5: 1 to obtain NCO group and the equivalent proportion of hydroxyl in the waterborne two-component polyurethane coating composition.
6. waterborne two-component polyurethane coating composition according to any one of claims 1-5, wherein the bi-component
Aqueous polyurethane coating composition further includes：(d) aqueous polyurethane dispersion.
7. a kind of coated article includes the film of substrate and coating on the substrate, the film is according in claim 1-6
It is prepared by any one of them waterborne two-component polyurethane coating composition.
8. coated article according to claim 7, the value of chromatism after the film toasts 1 day at 150 DEG C is less than 3.0,
The value of chromatism is tested and is calculated respectively according to GB 11186.2 and GB 11186.3.
9. the waterborne two-component polyurethane coating composition according to any one of claim 1-6 is used to prepare according to right
It is required that the purposes of the coated article described in 7 or 8.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210452211.XA CN103773210B (en) | 2012-10-22 | 2012-10-22 | Waterborne two-component polyurethane coating composition |
| PCT/EP2013/071942 WO2014064035A2 (en) | 2012-10-22 | 2013-10-21 | Two-component waterborne polyurethane coating composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210452211.XA CN103773210B (en) | 2012-10-22 | 2012-10-22 | Waterborne two-component polyurethane coating composition |
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| CN103773210B true CN103773210B (en) | 2018-10-16 |
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| WO (1) | WO2014064035A2 (en) |
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| CN103980811B (en) * | 2014-05-19 | 2017-06-16 | 上海维度化工科技有限公司 | A kind of high-efficiency antimicrobial aqueous polyurethane floor coatings and preparation method thereof |
| CN106280000A (en) * | 2016-08-30 | 2017-01-04 | 贝内克-长顺汽车内饰材料（张家港）有限公司 | A kind of automotive interior material with pearlescent appearance being adapted to vacuum forming |
| CN108285674A (en) * | 2018-01-05 | 2018-07-17 | 河北晨阳工贸集团有限公司 | A kind of environment-friendly type anti-blue light antibacterial self-drying paint and preparation method thereof |
| CN108250930A (en) * | 2018-01-30 | 2018-07-06 | 河北晨阳工贸集团有限公司 | A kind of agricultural machinery environment protecting water-based paint and preparation method |
| WO2020038994A1 (en) | 2018-08-24 | 2020-02-27 | Covestro Deutschland Ag | A composition, preparation method and application thereof |
| CN110857329A (en) * | 2018-08-24 | 2020-03-03 | 科思创德国股份有限公司 | Polyurethane composition and preparation method and application thereof |
| EP3841139B1 (en) * | 2018-08-24 | 2023-10-04 | Covestro Intellectual Property GmbH & Co. KG | A polyurethane composition, preparation method and application thereof |
| CN111621001B (en) * | 2020-06-04 | 2022-03-15 | 深圳市前海博扬研究院有限公司 | UV (ultraviolet) curing water-based resin and preparation method thereof |
| CN114621666A (en) * | 2020-12-11 | 2022-06-14 | 广东华润涂料有限公司 | Two-component polyurethane coating compositions, coatings formed therefrom, and coated articles |
| CN113136135A (en) * | 2021-04-16 | 2021-07-20 | 广东金涂宝新材料股份有限公司 | Double-component polyurethane self-extinction velvet-feel finish coating and preparation method thereof |
| CN113289045B (en) * | 2021-05-18 | 2022-07-08 | 长春工业大学 | Preparation of super-hydrophilic medical polyurethane foam dressing |
| CN114292579A (en) * | 2021-12-10 | 2022-04-08 | 浙江亚欣包装材料有限公司 | Coating method of composite film |
| CN114133503A (en) * | 2021-12-13 | 2022-03-04 | 西安交通大学 | High-temperature yellowing-resistant nonionic waterborne polyurethane and preparation method thereof |
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| WO2014064035A2 (en) | 2014-05-01 |
| CN103773210A (en) | 2014-05-07 |
| WO2014064035A3 (en) | 2014-07-03 |
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