CN109280475A - Polyurethane electrophoretic coating - Google Patents
Polyurethane electrophoretic coating Download PDFInfo
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- CN109280475A CN109280475A CN201810876141.8A CN201810876141A CN109280475A CN 109280475 A CN109280475 A CN 109280475A CN 201810876141 A CN201810876141 A CN 201810876141A CN 109280475 A CN109280475 A CN 109280475A
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- CN
- China
- Prior art keywords
- polyurethane
- electrophoretic coating
- glycol
- coating
- reaction
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- 238000000576 coating method Methods 0.000 title claims abstract description 51
- 239000011248 coating agent Substances 0.000 title claims abstract description 47
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 25
- 239000004814 polyurethane Substances 0.000 title claims abstract description 25
- 229920005749 polyurethane resin Polymers 0.000 claims abstract description 14
- 229920005862 polyol Polymers 0.000 claims abstract description 10
- 150000003077 polyols Chemical class 0.000 claims abstract description 9
- 239000005056 polyisocyanate Substances 0.000 claims abstract description 8
- 229920001228 polyisocyanate Polymers 0.000 claims abstract description 8
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 5
- 229920000570 polyether Polymers 0.000 claims abstract description 5
- 229920005989 resin Polymers 0.000 claims abstract description 4
- 239000011347 resin Substances 0.000 claims abstract description 4
- 150000005846 sugar alcohols Polymers 0.000 claims abstract description 4
- 239000002202 Polyethylene glycol Substances 0.000 claims abstract description 3
- 229920003054 adipate polyester Polymers 0.000 claims abstract description 3
- 235000021050 feed intake Nutrition 0.000 claims abstract description 3
- 239000011159 matrix material Substances 0.000 claims abstract description 3
- 239000004417 polycarbonate Substances 0.000 claims abstract description 3
- 229920000515 polycarbonate Polymers 0.000 claims abstract description 3
- 229920001223 polyethylene glycol Polymers 0.000 claims abstract description 3
- 229920001451 polypropylene glycol Polymers 0.000 claims abstract description 3
- 238000002156 mixing Methods 0.000 claims abstract 2
- 229920000909 polytetrahydrofuran Polymers 0.000 claims abstract 2
- 238000006243 chemical reaction Methods 0.000 claims description 15
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 239000005058 Isophorone diisocyanate Substances 0.000 claims description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 6
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 6
- 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 description 6
- 235000019441 ethanol Nutrition 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 239000002904 solvent Substances 0.000 claims description 5
- ZNQVEEAIQZEUHB-UHFFFAOYSA-N 2-ethoxyethanol Chemical compound CCOCCO ZNQVEEAIQZEUHB-UHFFFAOYSA-N 0.000 claims description 4
- SVTBMSDMJJWYQN-UHFFFAOYSA-N 2-methylpentane-2,4-diol Chemical compound CC(O)CC(C)(C)O SVTBMSDMJJWYQN-UHFFFAOYSA-N 0.000 claims description 4
- 239000004970 Chain extender Substances 0.000 claims description 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 4
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 4
- 239000012752 auxiliary agent Substances 0.000 claims description 4
- 239000003153 chemical reaction reagent Substances 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 3
- 150000001412 amines Chemical class 0.000 claims description 3
- 239000003054 catalyst Substances 0.000 claims description 3
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 claims description 3
- 229940043237 diethanolamine Drugs 0.000 claims description 3
- -1 trihydroxyethyl Chemical group 0.000 claims description 3
- YXRKNIZYMIXSAD-UHFFFAOYSA-N 1,6-diisocyanatohexane Chemical compound O=C=NCCCCCCN=C=O.O=C=NCCCCCCN=C=O.O=C=NCCCCCCN=C=O YXRKNIZYMIXSAD-UHFFFAOYSA-N 0.000 claims description 2
- DURPTKYDGMDSBL-UHFFFAOYSA-N 1-butoxybutane Chemical compound CCCCOCCCC DURPTKYDGMDSBL-UHFFFAOYSA-N 0.000 claims description 2
- SOIAEOTUSNFHMI-UHFFFAOYSA-N 2-(2-aminoethylamino)ethane-1,1-diol Chemical compound NCCNCC(O)O SOIAEOTUSNFHMI-UHFFFAOYSA-N 0.000 claims description 2
- SBASXUCJHJRPEV-UHFFFAOYSA-N 2-(2-methoxyethoxy)ethanol Chemical compound COCCOCCO SBASXUCJHJRPEV-UHFFFAOYSA-N 0.000 claims description 2
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 claims description 2
- BYACHAOCSIPLCM-UHFFFAOYSA-N 2-[2-[bis(2-hydroxyethyl)amino]ethyl-(2-hydroxyethyl)amino]ethanol Chemical compound OCCN(CCO)CCN(CCO)CCO BYACHAOCSIPLCM-UHFFFAOYSA-N 0.000 claims description 2
- SDXAWLJRERMRKF-UHFFFAOYSA-N 3,5-dimethyl-1h-pyrazole Chemical compound CC=1C=C(C)NN=1 SDXAWLJRERMRKF-UHFFFAOYSA-N 0.000 claims description 2
- FBPFZTCFMRRESA-KVTDHHQDSA-N D-Mannitol Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-KVTDHHQDSA-N 0.000 claims description 2
- 229930195725 Mannitol Natural products 0.000 claims description 2
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 2
- TVXBFESIOXBWNM-UHFFFAOYSA-N Xylitol Natural products OCCC(O)C(O)C(O)CCO TVXBFESIOXBWNM-UHFFFAOYSA-N 0.000 claims description 2
- LHIJANUOQQMGNT-UHFFFAOYSA-N aminoethylethanolamine Chemical compound NCCNCCO LHIJANUOQQMGNT-UHFFFAOYSA-N 0.000 claims description 2
- 239000002518 antifoaming agent Substances 0.000 claims description 2
- PDXRQENMIVHKPI-UHFFFAOYSA-N cyclohexane-1,1-diol Chemical compound OC1(O)CCCCC1 PDXRQENMIVHKPI-UHFFFAOYSA-N 0.000 claims description 2
- 235000011187 glycerol Nutrition 0.000 claims description 2
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 claims description 2
- 229940051250 hexylene glycol Drugs 0.000 claims description 2
- 239000000594 mannitol Substances 0.000 claims description 2
- 235000010355 mannitol Nutrition 0.000 claims description 2
- HEBKCHPVOIAQTA-UHFFFAOYSA-N meso ribitol Natural products OCC(O)C(O)C(O)CO HEBKCHPVOIAQTA-UHFFFAOYSA-N 0.000 claims description 2
- CRVGTESFCCXCTH-UHFFFAOYSA-N methyl diethanolamine Chemical compound OCCN(C)CCO CRVGTESFCCXCTH-UHFFFAOYSA-N 0.000 claims description 2
- WHIVNJATOVLWBW-UHFFFAOYSA-N n-butan-2-ylidenehydroxylamine Chemical compound CCC(C)=NO WHIVNJATOVLWBW-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
- 239000002562 thickening agent Substances 0.000 claims description 2
- 239000000080 wetting agent Substances 0.000 claims description 2
- 239000000811 xylitol Substances 0.000 claims description 2
- HEBKCHPVOIAQTA-SCDXWVJYSA-N xylitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)CO HEBKCHPVOIAQTA-SCDXWVJYSA-N 0.000 claims description 2
- 235000010447 xylitol Nutrition 0.000 claims description 2
- 229960002675 xylitol Drugs 0.000 claims description 2
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims 2
- 150000002148 esters Chemical class 0.000 claims 2
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims 2
- HXKKHQJGJAFBHI-UHFFFAOYSA-N 1-aminopropan-2-ol Chemical compound CC(O)CN HXKKHQJGJAFBHI-UHFFFAOYSA-N 0.000 claims 1
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 claims 1
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 claims 1
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 claims 1
- 229910021529 ammonia Inorganic materials 0.000 claims 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims 1
- 239000000843 powder Substances 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract description 2
- 239000003973 paint Substances 0.000 description 8
- 239000004593 Epoxy Substances 0.000 description 5
- 239000006185 dispersion Substances 0.000 description 4
- 239000000839 emulsion Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 2
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-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
- 230000005611 electricity Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 125000003700 epoxy group Chemical group 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229940043265 methyl isobutyl ketone Drugs 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 230000009182 swimming Effects 0.000 description 2
- SDZIJVBMSLNEJL-UHFFFAOYSA-N 2-(2-aminoethylamino)ethane-1,1,1-triol Chemical compound NCCNCC(O)(O)O SDZIJVBMSLNEJL-UHFFFAOYSA-N 0.000 description 1
- OPKOKAMJFNKNAS-UHFFFAOYSA-N N-methylethanolamine Chemical compound CNCCO OPKOKAMJFNKNAS-UHFFFAOYSA-N 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- CDQSJQSWAWPGKG-UHFFFAOYSA-N butane-1,1-diol Chemical compound CCCC(O)O CDQSJQSWAWPGKG-UHFFFAOYSA-N 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 229940028356 diethylene glycol monobutyl ether Drugs 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000001962 electrophoresis Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000027555 hydrotropism Effects 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 239000006115 industrial coating Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- JCGNDDUYTRNOFT-UHFFFAOYSA-N oxolane-2,4-dione Chemical compound O=C1COC(=O)C1 JCGNDDUYTRNOFT-UHFFFAOYSA-N 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- 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
- C09D175/08—Polyurethanes from polyethers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/44—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for electrophoretic applications
- C09D5/4419—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for electrophoretic applications with polymers obtained otherwise than by polymerisation reactions only involving carbon-to-carbon unsaturated bonds
- C09D5/4465—Polyurethanes
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Paints Or Removers (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The present invention relates to polyurethane electrophoretic coatings, matrix resin uses polyurethane resin, the polyurethane resin is by the average functionality 2 ~ 5 of a) .10 ~ 40 part molecular weight 400 ~ 15000: polypropylene glycol, polyethylene glycol, EO/PO block polyether polyol, EO/PO blending feed intake one of polyether polyol, adipate polyester polyalcohol, polycarbonate polyol, polytetrahydrofuran polyol or a variety of, react and are prepared with b) .5 ~ 200 part polyisocyanates.This hair has the following advantages and beneficial effects: (1) type and ratio raw materials used according to polyurethane resin, is capable of the flexibility of any adjusting coating；(2) according to the type for using polyisocyanates, it can make coating that there is excellent weatherability.
Description
[technical field]
The present invention relates to polyurethane electrophoretic coatings.
[background technique]
In recent years, due to environmental pollution increasingly aggravate and continuous reinforcement of the people for environmental consciousness, industrial coating by
Solvent type hydrotropism starts to change.Electrophoretic coating has a series of oil paints and does not have as a member in water paint
The advantages of, such as a large amount of organic solvents are saved, atmosphere pollution is greatly reduced using water as dissolving medium using water soluble paint
And environmental hazard, safety and sanitation, while avoiding the hidden danger of fire；Coating efficiency is high, and paint loss is small, and the utilization rate of coating can
Up to 90%~95%；Coating thickness is uniform, and adhesive force is strong, and coating quality is good, workpiece each position such as internal layer, recess, weld seam etc.
Place can obtain uniform, smooth paint film, solve other coating process to the coating problem of complex-shaped workpieces；Production efficiency
Height constructs and automatic continuous production can be achieved, greatly improves labor efficiency etc..
Conventional electrophoretic coating is divided into epoxy and acrylic acid two major classes, and wherein epoxies electrophoretic coating is excellent anti-due to having
Corruption and adhesive force, the priming paint for being widely used as complicated metal material use.But not due to the flexibility of epoxies electrophoretic coating
Foot, is often unable to satisfy requirement of many industries to coating impact resistance.
[summary of the invention]
The main purpose of the present invention is to provide a kind of electrophoresis coatings using resin based on polyurethane.This electricity
Swimming coating can significantly improve the flexibility of paint film while meeting anti-corrosive properties and adhesive force, while can also take into account acrylic acid
The weather resistance of class electrophoretic coating.
To achieve the goals above, a kind of polyurethane electrophoretic coating is provided, matrix resin uses polyurethane resin, described
Polyurethane resin be by
A) average functionality 2~5 of .10~40 part molecular weight 400~15000: polypropylene glycol, polyethylene glycol, EO/PO
Feed intake polyether polyol, adipate polyester polyalcohol, polycarbonate polyol, poly- tetrahydro is blended in block polyether polyol, EO/PO
One of furan polyols are a variety of, with
B) polyisocyanates reaction in .5~200 part is prepared.
Further above-mentioned electrophoretic coating also has following ingredient:
Including curing agent.
The curing agent is by 10~50 parts of polyisocyanates and 1~100 part of end-capping reagent, and 0.001~5 part of polyurethane is with urging
Agent and appropriate solvent heat up in the reaction vessel, carry out being prepared for reaction 2~15 hours between 40-150 DEG C.
Including mill base and auxiliary agent.
The auxiliary agent is one of levelling agent, wetting agent, dispersing agent, thickener, defoaming agent or a variety of mixtures.
The neutralizer is one or more in low molecule amine or low molecular acid.
Component a heats up in the reaction vessel with component b and solvent, carries out between 40-150 DEG C reaction 2~15 hours,
Then 0.1~10 part of chain extender, 0.001~5 part of polyurethane catalyst is added, continuation carries out reaction 2 between 40-150 DEG C
Polyurethane resin is prepared within~15 hours.
The polyisocyanates are as follows: TDI, TDI tripolymer, any type of MDI, any form MDI tripolymer,
One of HDI, HDI trimer, IPDI, IPDI tripolymer, HMDI or a variety of mixtures.
The chain extender are as follows: ethylene glycol, propylene glycol, butanediol, hexylene glycol, cyclohexanediol, glycerine, trihydroxy methyl third
Alkane, pentaerythrite, mannitol, xylitol, monoethanolamine, methyl-ethanolamine, diethanol amine, methyl diethanolamine, three ethyl alcohol
One of amine, hydroxyethyl ethylenediamine, dihydroxy ethyl ethylenediamine, trihydroxyethyl ethylenediamine, tetrahydroxyethyl-ethylene diamine are a variety of mixed
Close object.
The end-capping reagent are as follows: methanol, ethyl alcohol, isopropanol, n-butanol, glycol monoethyl ether, ethylene glycol monoethyl ether, second two
One of alcohol monobutyl ether, diethylene glycol monomethyl ether, diethylene glycol monobutyl ether, methyl ethyl ketoxime, dimethyl pyrazole are a variety of mixed
Close object.
This hair has the following advantages and beneficial effects:
(1) type and ratio raw materials used according to polyurethane resin are capable of the flexibility of any adjusting coating；
(2) according to the type for using polyisocyanates, it can make coating that there is excellent weatherability.
[specific embodiment]
For ease of further understanding the present invention, the following example elaborates details particularly, but implementation of the invention
Mode is without being limited thereto.
Embodiment 1
1) electrophoretic coating polyurethane resin
Equipped with thermometer, blender and reflux condensing tube reaction flask in, sequentially add formula ratio PPG1000,
MDI, organotin T12, methyl iso-butyl ketone (MIBK), heating stirring is reacted at 60 DEG C, keeps the temperature 5 hours.Then 30 DEG C are cooled to,
Triethanolamine is added, is heated to 45 DEG C, stirs 2 hours, obtains electrophoretic coating polyurethane resin.
2) electrophoretic coating polyaminoester emulsion is prepared
In equipped with thermometer, blender reaction flask, the above-mentioned substance of formula ratio is sequentially added, is existed using dispersion impeller
Disperse 20 minutes under 1500rpm, obtains electrophoretic coating polyaminoester emulsion.
3) polyurethane electrophoretic coating tank liquor
Above-mentioned substance is added by formula ratio, is dispersed at 800 rpm using dispersion impeller 15 minutes, it is poly- to obtain electrophoretic coating use
Urethane tank liquor.
Embodiment 2
1) electrophoretic coating polyurethane resin
Equipped with thermometer, blender and reflux condensing tube reaction flask in, sequentially add formula ratio EP copolymerization 2000,
IPDI, organotin T12, butanone, heating stirring is reacted at 60 DEG C, keeps the temperature 8 hours.Then 30 DEG C are cooled to, first is added
Base diethanol amine is heated to 45 DEG C, stirs 2 hours, obtains electrophoretic coating polyurethane resin.
2) electrophoretic coating polyaminoester emulsion is prepared
In equipped with thermometer, blender reaction flask, the above-mentioned substance of formula ratio is sequentially added, is existed using dispersion impeller
Disperse 20 minutes under 1500rpm, obtains electrophoretic coating polyaminoester emulsion.
3) polyurethane electrophoretic coating tank liquor
Above-mentioned substance is added by formula ratio, is dispersed at 800 rpm using dispersion impeller 15 minutes, it is poly- to obtain electrophoretic coating use
Urethane tank liquor.
Making sheet test and (the Conventional epoxy electricity of embodiment 3 are carried out to the polyurethane electrophoretic coating that embodiment 1, embodiment 2 obtain
Swimming coating) it compares, film thickness 25-30um, test relevant parameter is shown in Table 1.
The color inhibition comparison of 1 embodiment 1 of table, 3 coating of embodiment 2 and embodiment
(1) add value of chromatism (2) paint film impact test instrument (3) cross-cut tester method of roasting 180 DEG C of 1h
As seen from the data in Table 1, polyurethane electrophoretic coating possesses outstanding flexibility while having excellent salt fog resistance,
And use the polyurethane of IPDI more for good weatherability.It is obviously high using the performance of polyurethane system in electrophoretic coating
In epoxy systems.
The foregoing is merely highly preferred embodiment of the present invention, are not used in the limitation present invention.The technical staff of this neighborhood according to
Announcement of the invention, the modification made for the present invention all should be within the scope of the present invention.
Claims (10)
1. a kind of polyurethane electrophoretic coating, it is characterised in that matrix resin uses polyurethane resin, and the polyurethane resin is
By
A) average functionality 2 ~ 5 of .10 ~ 40 part molecular weight 400 ~ 15000: polypropylene glycol, polyethylene glycol, EO/PO block are poly-
Ethoxylated polyhydric alcohol, feed intake polyether polyol, adipate polyester polyalcohol, polycarbonate polyol, polytetrahydrofuran of EO/PO blending are more
One of first alcohol is a variety of, with
B) polyisocyanates reaction in .5 ~ 200 part is prepared.
2. polyurethane electrophoretic coating as described in claim 1, it is characterised in that including curing agent.
3. polyurethane electrophoretic coating as claimed in claim 2, it is characterised in that the curing agent is by 10 ~ 50 parts of polyisocyanic acid
Ester and 1 ~ 100 part of end-capping reagent, 0.001 ~ 5 part of polyurethane catalyst and appropriate solvent heat up in the reaction vessel, in 40-
It carries out being prepared for reaction 2 ~ 15 hours between 150 DEG C.
4. polyurethane electrophoretic coating as claimed in claim 1 or 2, it is characterised in that including mill base and auxiliary agent.
5. polyurethane electrophoretic coating as claimed in claim 4, it is characterised in that the auxiliary agent is levelling agent, wetting agent, divides
One or more of powder, thickener, defoaming agent scalemic thereof.
6. polyurethane electrophoretic coating as claimed in claim 5, it is characterised in that the neutralizer is low molecule amine or low molecule
It is one or more of in acid.
7. polyurethane electrophoretic coating as described in claim 1, it is characterised in that component a is reacting appearance with component b and solvent
It heats up in device, is carried out between 40-150 DEG C reaction 2 ~ 15 hours, 0.1 ~ 10 part of chain extender, 0.001 ~ 5 part of poly- ammonia is then added
Ester catalyst, continuation carry out polyurethane resin being prepared in reaction 2 ~ 15 hours between 40-150 DEG C.
8. polyurethane electrophoretic coating as described in claim 1, it is characterised in that the polyisocyanates are as follows: TDI, TDI tri-
Aggressiveness, any type of MDI, the tripolymer of any form MDI, HDI, HDI trimer, IPDI, IPDI tripolymer, in HMDI
One or more of mixtures.
9. polyurethane electrophoretic coating as described in claim 1, it is characterised in that the chain extender are as follows: ethylene glycol, propylene glycol, fourth
Glycol, hexylene glycol, cyclohexanediol, glycerine, trimethylolpropane, pentaerythrite, mannitol, xylitol, monoethanolamine, methyl
Monoethanolamine, diethanol amine, methyl diethanolamine, triethanolamine, hydroxyethyl ethylenediamine, dihydroxy ethyl ethylenediamine, trihydroxyethyl
One or more of ethylenediamine, tetrahydroxyethyl-ethylene diamine quality arbitrarily compares mixture.
10. polyurethane electrophoretic coating as described in claim 1, it is characterised in that the end-capping reagent are as follows: methanol, ethyl alcohol, different
Propyl alcohol, n-butanol, glycol monoethyl ether, ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, diethylene glycol monomethyl ether, diethylene glycol list
One or more of butyl ether, methyl ethyl ketoxime, dimethyl pyrazole quality arbitrarily compares mixture.
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| CN201810876141.8A CN109280475A (en) | 2018-08-03 | 2018-08-03 | Polyurethane electrophoretic coating |
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| CN201810876141.8A CN109280475A (en) | 2018-08-03 | 2018-08-03 | Polyurethane electrophoretic coating |
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Cited By (1)
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| CN117567932A (en) * | 2023-12-05 | 2024-02-20 | 科顺防水科技股份有限公司 | Composition for single-component polyurethane waterproof coating, and preparation and application thereof |
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