Resin composition for water-based high-performance colored bright paint and preparation method thereof

A resin composition, high-performance technology, applied in polyester coatings, coatings, etc., can solve problems such as waste of energy, high baking temperature, and insufficient gloss of glossy solid-color paints

Active Publication Date: 2017-03-15
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 colored bright paint and preparation method thereof
  • Resin composition for water-based high-performance colored bright paint and preparation method thereof
  • Resin composition for water-based high-performance colored bright paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085] The preparation method of water-based castor oil modified alkyd resin is: clean the reactor, put into the reactor in order 23% castor oil, 27% trimethylolpropane and 31% phthalic anhydride, and use 1.5% Rinse the pipes of the reactor with xylene, gradually raise the temperature of the solution in the reactor to 200~210°C for 2 hours, then keep it at 210~220°C for 1.5 hours 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, then raise the temperature of the solution in the reactor to 220~230°C and react for 1h until the acid value is ≤18mgKOH / g, quickly cool down the solution in the reactor to 180°C and then add 5.5% trimellitic anhydride. Keep warm at 180~190°C for 30~60min until the acid value is 40~45mgKOH / g, cool down to 140°C, add 9% anti-white water and stir evenly, add 3% n-butanol at 120°C and stir for 40min, then cool down to room temperature Filtrate the material; finally add DMEA and a certain a...

Embodiment 2

[0087] The preparation method of the water-based castor oil modified alkyd resin is: clean the reactor, put 35% castor oil, 16% trimethylolpropane and 20% phthalic anhydride into the reactor in order, and use 5.5% Rinse the pipeline of the reactor with xylene, gradually raise the temperature of the solution in the reactor to 200~210°C and keep it warm for 1.5h, then keep it at 210~220°C for 1.2h until the acid value is 20~22 mgKOH / g. Running water, that is, do not allow it to reflux, then raise the temperature of the solution in the reactor to 220~230°C and react for 0.5h until the acid value is ≤18mgKOH / g, quickly cool down the solution in the reactor to 185°C, and then add 1.5% trimellitic anhydride , keep warm at 180~190°C for 30~60min until the acid value is 40~45mgKOH / g, cool down to 135°C, add 12% white water and stir evenly, add 10% n-butanol at 115°C and stir for 35min, then drop to Filter the material after normal temperature; finally add DMEA and a certain amount of ...

Embodiment 3

[0089]The preparation method of water-based castor oil modified alkyd resin is as follows: clean the reactor, put 30% castor oil, 20% trimethylolpropane and 25% phthalic anhydride into the reactor in order, and use 5% Rinse the pipeline of the reactor with xylene, gradually raise the temperature of the solution in the reactor to 200~210°C and keep it warm for 2.5h, then keep it at 210~220°C for 2h until the acid value is 20~22 mgKOH / g, divide the reflux water at one time , that is, do not allow it to reflux, then raise the temperature of the solution in the reactor to 220~230°C and react for 1.5h until the acid value is ≤18mgKOH / g, quickly cool down the solution in the reactor to 175°C, and then add 3% trimellitic anhydride, Keep warm at 180~190°C for 30~60min until the acid value is 40~45mgKOH / g, cool down to 145°C, add 8% anti-white water and stir evenly, add 9% n-butanol at 125°C and stir for 35min, then lower to room temperature Finally, filter and discharge; finally add D...

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PUM

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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 also are unsafe to produce and do some harm to the health of employees. Therefore, the coating of the above workpieces must be water-based. [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 gloss of the gloss sol...

Claims

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Application Information

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Patent Type & Authority Patents(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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