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Aqueous polymer coating composition for automobiles

A water-based polymer and composition technology, used in anti-corrosion coatings, polyester coatings, coatings, etc., can solve the problem of long leveling time and pre-baking time, long and short wavelengths of paint coating film, reducing production takt, etc. problems, to achieve the effect of reducing pre-baking time, short pre-baking time, and improving leveling

Active Publication Date: 2019-08-23
NIPPON PAINT CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Water-based monomolecular coating film (Volume 45, No. 7 of Paint Industry), an article by Xing Wenping and Ge Fei of Jianghuai Automobile Co., Ltd. A coating process of water-based single-coat solid color paint. This process has low VOC emissions, and its appearance and performance can meet the requirements of JAC trucks. However, it has the problem of long leveling time and pre-baking time, which reduces the production cycle.
The appearance of the paint coating film has large long and short waves, and the visual effect is not good

Method used

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  • Aqueous polymer coating composition for automobiles
  • Aqueous polymer coating composition for automobiles
  • Aqueous polymer coating composition for automobiles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] The selected raw materials and consumption of the water-based polymer coating composition for automobiles are as shown in Table 2:

[0048] Table 2

[0049]

[0050] The preparation method of the water-based polymer coating composition for automobiles in this embodiment includes the following steps: adding the components VIACRYL VSC 6800w / 47WA, YG-SD842, diethylene glycol butyl ether, pure water, RHODOLINE 3100, and FS-204 DPM in sequence In a suitable container, stir for 30 minutes, then slowly add CR-97 and BYK-011, stir for 30 minutes, use a sand mill to grind the above mixed materials to a fineness of less than 5um, filter, calculate the yield, according to the yield Slowly add Luwipal069, CYMEL 285, TEGO Wet 280, DYNOL 980, DMEA 10% solution and stir for 30 minutes to obtain the automotive water-based polymer coating composition described in Example 1.

[0051] The automobile water-based polymer coating composition prepared in Example 1 was used to coat the fil...

Embodiment 2

[0067] The automobile water-based polymer coating composition of the present embodiment comprises the component of following parts by weight: 50 parts of VIACRYLVSC 6276w / 44WA, 10 parts of VIACRYL VSC 6800w / 47WA, 4 parts of Luwipal 069 (full methyl etherification), 1 part of CYMEL285 ( Mixed etherification), 1 part of DMEA 10% solution, 5 parts of CR-97, 20 parts of diethylene glycol butyl ether, 5 parts of water, 2 parts of SOLSPERSE27000, 0.1 part of TEGO Wet 280, 0.1 part of DYNOL 980, 1 part of FS- 204 DPM, 0.8 parts BYK-011.

[0068] The preparation method is the same as in Example 1.

Embodiment 3

[0070] The automobile water-based polymer coating composition of the present embodiment comprises the component of following parts by weight: 10 parts of VIACRYLVSC 6276w / 44WA, 50 parts of VIACRYL VSC 6800w / 47WA, 8 parts of Luwipal 069 (full methyl etherification), 2 parts of CYMEL285 ( Mixed etherification), 5 parts of DMEA 10% solution, 15 parts of CR-97, 5 parts of diethylene glycol butyl ether, 1 part of water, 3 parts of SOLSPERSE27000, 0.2 parts of TEGO Wet 280, 0.2 parts of DYNOL 980, 0.3 parts of FS- 204 DPM, 0.3 parts BYK-011.

[0071] The preparation method is the same as in Example 1.

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Abstract

The invention discloses an aqueous polymer coating composition for automobiles. The aqueous polymer coating composition for automobiles comprises, by weight, (a) 10-50 parts of an aqueous acrylic resin secondary dispersion, (b) 10-50 parts of an aqueous polyester-modified acrylic resin secondary dispersion, (c) 1-5 parts of a dispersant, (d) 5-22 parts of a pigment, (e) 5-15 parts of an amino resin, (f) 5-30 parts of a solvent and (g) 1-10 parts of an assistant; and the sum of the weights of the components (a) and (b) is 50-100% of the total weight of the composition. The aqueous polymer coating composition for automobiles of the invention solves the problems of long leveling time in manufacturing of an aqueous coating film in the prior art, low gloss of the aqueous coating film and difficulty in leveling of the aqueous coating film, successfully shortens the leveling time and the pre-baking time, has a small coating film long-short wave, makes a the film flat, and is suitable for coating cars; and the coating film formed after coating has the advantages of high gloss, excellent leveling property, good chemical resistance and high pinhole limit.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a water-based polymer coating composition for automobiles. Background technique [0002] With the development of industry, environmental pollution is becoming more and more serious, PM2.5 seriously exceeds the standard, and the problem of PM2.5 has attracted widespread public attention. Affected by extremely unfavorable weather conditions, the central and eastern regions of my country have experienced long-term, large-scale, heavily polluted haze weather. According to the new ambient air quality standards, the average number of days in 74 key monitoring cities across the country is only 37.6%. Environmental pollution leads to ecological deterioration, leading to a significant increase in the incidence of many diseases. The paint coating industry accounts for a large proportion of environmental pollution factors, and automotive paint coating accounts for about 20% o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/04C09D161/20C09D167/06C09D5/08C09D7/40
CPCC08L2205/025C08L2205/035C09D5/08C09D133/04C09D161/20C09D167/06C09D7/40C08L33/04C08L67/06C08L61/20
Inventor 高增奎方黎明夏天渊印维坚
Owner NIPPON PAINT CHINA
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