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Resin composition for water-based high-performance color gloss coating and preparation method of resin composition

A resin composition, high-performance technology, used in polyester coatings, coatings, etc., can solve the problems of unstable gloss, high baking temperature, and high cost of water-based baking paint

Active Publication Date: 2015-01-21
肇庆千江高新材料科技股份公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, water-based baking varnishes with comparable performance to solvent-based baking varnishes have the following problems: 1. The baking temperature is too high, at least above 160°C, which wastes energy; 2. Due to the relatively late development of domestic water-based resins, they mainly rely on imports. The cost is relatively high; 3. The luster of the bright solid color paint is not high enough, and it needs to be covered to meet the requirements; 4. When the general water-based baking paint is diluted with water, the gloss is unstable and the gloss will often decrease a lot
[0004] In response to the above defects, the applicant filed a patent application on December 19, 2013 for a water-based automotive paint and its preparation method and method of use. The technical scheme used, but the dispersion performance and storage performance of the baking paint corresponding to this technical scheme need to be improved

Method used

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  • Resin composition for water-based high-performance color gloss coating and preparation method of resin composition
  • Resin composition for water-based high-performance color gloss coating and preparation method of resin composition
  • Resin composition for water-based high-performance color gloss coating and preparation method of resin composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085] The preparation method of the water-based castor oil modified alkyd resin is: clean the reactor, and put 23% castor oil, 27% trimethylolpropane and 31% phthalic anhydride into the reactor in order, and use 1.5% Rinse the pipes of the reactor with xylene, gradually heat up the solution in the reactor to 200~210℃ for 2h, then keep it at 210~220℃ for 1.5h until the acid value is 20~22 mgKOH / g, and divide the reflux water at one time , That is, do not allow it to reflux, and then heat the solution in the reaction kettle to 220~230°C for 1 hour until the acid value is ≤18mgKOH / g, quickly cool the solution in the reaction kettle to 180°C, and add 5.5% trimellitic anhydride. Incubate at 180~190℃ for 30~60mins until the acid value is 40~45mgKOH / g, then cool down to 140℃, add 9% anti-white water and stir evenly, add 3% n-butanol at 120℃, stir for 40min, then cool to room temperature Filter out the material; finally add DMEA and a certain amount of water to neutralize, and adjust ...

Embodiment 2

[0087] The preparation method of water-based castor oil modified alkyd resin is: clean the reactor, and put 35% castor oil, 16% trimethylolpropane and 20% phthalic anhydride into the reactor in order, and use 5.5% Rinse the pipes of the reaction kettle with xylene, gradually heat up the solution in the reaction kettle to 200~210℃ for 1.5h, and then keep it at 210~220℃ for 1.2h until the acid value is 20~22 mgKOH / g, and then divide it all at once. Flowing water, that is, no reflux, then heat up the solution in the reactor to 220~230℃ for 0.5h until the acid value is ≤18mgKOH / g, quickly cool the solution in the reactor to 185℃ and add 1.5% trimellitic anhydride , Keep the temperature at 180~190℃ for 30~60min until the acid value is 40~45mgKOH / g, then cool down to 135℃, add 12% anti-white water and stir evenly, add 10% n-butanol and stir for 35min at 115℃, then reduce to After normal temperature, filter and discharge; finally add DMEA and a certain amount of water to neutralize, a...

Embodiment 3

[0089] The preparation method of the water-based castor oil modified alkyd resin is: clean the reactor, and put 30% castor oil, 20% trimethylolpropane and 25% phthalic anhydride into the reactor in order, and use 5% Rinse the pipes of the reactor with xylene, gradually heat up the solution in the reactor to 200~210℃ for 2.5h, then keep it at 210~220℃ for 2h until the acid value is 20~22 mgKOH / g, and divide the reflux water at one time , That is, do not allow it to reflux, and then heat the solution in the reaction kettle to 220~230°C for 1.5h until the acid value is ≤18mgKOH / g, quickly cool the solution in the reaction kettle to 175°C, and add 3% trimellitic anhydride. Incubate at 180~190℃ for 30~60mins until the acid value is 40~45mgKOH / g, then cool to 145℃, add 8% anti-white water and stir evenly, add 9% n-butanol at 125℃ and stir for 35min, then reduce to room temperature After filtering and discharging; finally add DMEA and a certain amount of water to neutralize, and adjus...

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Abstract

The invention discloses a resin composition for a water-based high-performance color gloss coating and a preparation method of the resin composition. The resin composition is prepared from 30%-60% of water-based castor oil-modified alkyd resin and 40%-70% of water-based acrylic resin, wherein the water-based castor oil-modified alkyd resin is mainly prepared from castor oil, trimethylolpropane, phthalic anhydride, trimellitic anhydride, butoxyethanol, n-butyl alcohol and xylene; and the water-based acrylic resin is prepared from a solvent, methyl methacrylate, butyl acrylate, styrene, hydroxyethyl methylacrylate, crylic acid, benzoyl peroxide, tert-butyl peroxybenzoate, ammonium hydroxide and water. The pigment disclosed by the invention is easily dispersed to below 10 microns, and is stable in storage; the prepared coating performance is excellent; and the glossiness of a film is not reduced during adding water and diluting.

Description

Technical field [0001] The invention relates to a resin composition for water-based high-performance colored bright paint and a preparation method. Background technique [0002] The coatings used for the coating of metal surfaces such as trucks, transport vehicles, agricultural vehicles, truck boxes, mechanical equipment, and hardware components are mainly solvent-based coatings. Solvent-based coatings not only cause serious pollution to the environment, but are also unsafe in production and have certain harm to the health of employees. Therefore, the coating of the above workpieces must be water-based. [0003] At present, water-based baking paints with performance equivalent to solvent-based baking paints have the following problems: 1. The baking temperature is too high, at least 160℃ above, which wastes energy; 2. As the development of domestic water-based resins is relatively late, they mainly rely on imports. The cost is relatively high; 3. The gloss of the bright solid col...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/08C09D133/12C09D133/08C09D133/14C08G63/49C08F220/14C08F220/18C08F212/08C08F220/28C08F220/06
CPCC08F220/14C08F220/1804C08F220/28C08G63/48C09D133/12C09D167/08C08L67/08C08L33/14C08L33/12C08F212/08C08F220/06C08F220/281
Inventor 李会宁陈仕箐
Owner 肇庆千江高新材料科技股份公司
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