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Water-based automobile floating coat and method for preparing same

An automotive and water-based technology, applied in coatings, polyester coatings, etc., can solve the problems of yellowing of coatings, poor water resistance-related properties, and high coating costs, and achieve low organic volatiles, excellent stone chip resistance, and smooth coating film. smooth effect

Active Publication Date: 2013-03-20
湖南湘江关西涂料(长沙)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The automobile intermediate coating has the following disadvantages due to the use of blocked isocyanate: 1) high cost of coating; 2) high curing temperature of coating; 3) yellowing problem of coating; 4) low solid content of coating;
[0005] At present, most of the water-based automotive coatings used in the market have the following problems: 1) The appearance of the water-based intermediate coating is poor, 2) The water-resistant performance of the water-based intermediate coating is poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] The water-based automotive intermediate coating of this embodiment is composed of the following parts by weight: polyester resin A (coconut oleic acid modified water-dispersible polyester resin A1 shown in Table 1) 21kg, dispersant A 1.20kg (air Chemical Products Co., Ltd., SURFYNOL CT-121 is 0.60 kg; Air Chemical Products Co., Ltd., SURFYNOL CT-131 is 0.60 kg), defoamer A (BYK Chemical, BYK-011) 1.35 kg, carbon black (Mitsubishi Chemical, MA-100) 0.07kg, titanium dioxide (U.S. DuPont, R-706 titanium dioxide) 19.5kg, talcum powder (Shenzhen United Xin, LHX-888) 1.50kg, benzoin (Fenghua Jiqi High-tech, BENZION B) 0.75kg, Foaming agent B (Air Chemical Products Co., Ltd., SURFYNOL 104A) 1.80 kg, polyester resin B (Nupces company, Setaqua 6071 AQ-44) 23.90 kg, acrylic emulsion (Nupces company, Setaqua 6802) 3.5 kg, bisphenol A Polyether (Shanghai Yunqiang, BPE-06) 2.00kg, methyl butyl mixed etherified amino resin (Korea American screw, MELCROSS 11) 5kg, acid catalyst (King’s...

Embodiment 2

[0077] The water-based automotive intermediate coating of this embodiment is composed of the following components by weight: polyester resin A (coconut oleic acid modified water-dispersible polyester resin A2 shown in Table 1) 21 kg, dispersant A 1.20 kg (air Chemical Products Co., Ltd., SURFYNOL CT-121 is 0.60 kg; Air Chemical Products Co., Ltd., SURFYNOL CT-131 is 0.60 kg), defoamer A (BYK Chemie, BYK-011) 1.35kg, carbon black (Mitsubishi Chemical, MA-100) 0.07kg, titanium dioxide (U.S. DuPont, R-706 titanium dioxide) 19.5kg, talcum powder (Shenzhen United Xin, LHX-888) 1.50kg, benzoin (Fenghua Jiqi High-tech, BENZION B) 0.75kg, Foaming agent B (Air Chemical Products Co., Ltd., SURFYNOL 104A) 1.80 kg, polyester resin B (Nupces company, Setaqua 6071 AQ-44) 23.90 kg, acrylic emulsion (Nupces company, Setaqua 6802) 3.5 kg, bisphenol A Polyether (Shanghai Yunqiang, BPE-06) 2.00kg, methyl butyl mixed etherified amino resin (Korea American screw, MELCROSS 11) 5kg, acid catalyst (Ki...

Embodiment 3

[0086] The water-based automotive intermediate coating of this embodiment is composed of the following components by weight: polyester resin A (coconut oleic acid modified water-dispersible polyester resin A1 shown in Table 1) 28kg, dispersant A 1.20kg (air Chemical Products Co., Ltd., SURFYNOL CT-121 is 0.60 kg; Air Chemical Products Co., Ltd., SURFYNOL CT-131 is 0.60 kg), defoamer A (BYK-011) 1.35 kg, carbon black (Mitsubishi Chemical, MA-100) 0.07kg, titanium dioxide (U.S. DuPont, R-706 titanium dioxide) 19.5kg, talc (Shenzhen Lianxin, LHX-888) 1.50kg, benzoin (Fenghua Jiqi High-tech, BENZION B) 0.75kg, Foaming agent B (Air Chemical Products Co., Ltd., SURFYNOL 104A) 1.80 kg, polyester resin B (Nupces company, Setaqua 6071 AQ-44) 16.9 kg, acrylic emulsion (Nupces company, Setaqua 6760) 3.5 kg, bisphenol A Polyether (Shanghai Yunqiang, BPE-06) 2.00kg, methyl butyl mixed etherified amino resin (Korea Mescrew, MELCROSS 11) 5kg, acid catalyst (King’s, N 5528) 1.25kg, dispersant ...

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PUM

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Abstract

The invention discloses a water-based automobile floating coat and a method for preparing the same, wherein the water-based automobile floating coat is composed of the following components in parts by weight: 10-30 parts of polyester resin A, 0.5-3 parts of dispersant, 0.5-2 parts of defoamer A, 0-0.5 parts of carbon black, 10-30 parts of titanium dioxide, 0-3 parts of talcum powder, 0.5-2 parts of benzoin, 1-3 parts of defoamer B, 10-30 parts of polyester resin B, 2-6 parts of acrylic emulsion, 1-5 parts of bisphenol A polyether, 2-10 parts of methanol and butanol etherized amino resin, 0.5-2 parts of acid catalyst, 0.1-1 part of dispersant B, 0.1-1 part of substrate wetting agent, 0.2-2 parts of flatting agent, 1-10 parts of methylated amino resin, 0.1-1 part of anti-cratering additive, 0.2-0.5 parts of organic amine and 5-20 parts of de-ionized water. The invention also provides a method for preparing the water-based automobile floating coat. The water-based automobile floating coat provided by the invention is low in VOC content, good in appearance and excellent in water resistance related performance.

Description

technical field [0001] The invention relates to a water-based automobile intermediate coating and a preparation method thereof. Background technique [0002] At present, the widely used automotive intermediate coating is solvent-based intermediate coating, which contains a large amount of organic solvents, and the VOC content of the coating is high, which seriously pollutes the environment; at the same time, organic solvents are flammable and explosive, and exist Fire safety hazard. [0003] CN1357582A on July 10, 2002 discloses a kind of water-dispersed resin and coating thereof for coating in automobiles. The automotive primer is a cross-linked system of water-dispersed polyester with amino resin and blocked isocyanate. [0004] The automobile intermediate coating has the following disadvantages due to the use of blocked isocyanate: 1) high cost of coating; 2) high curing temperature of coating; 3) yellowing problem of coating; 4) low solid content of coating; [0005] ...

Claims

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Application Information

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IPC IPC(8): C09D167/08C09D7/12
Inventor 付长城高明于均慧张杰
Owner 湖南湘江关西涂料(长沙)有限公司
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