A kind of automobile water-based polymer coating composition

A water-based polymer and composition technology, used in polyester coatings, anti-corrosion coatings, coatings, etc., can solve the problems of long leveling time and pre-baking time, long and short wavelengths of paint coating film, and poor visual effect. Good and other problems, to achieve the effect of reducing pre-baking time, short pre-baking time, and smooth appearance

Active Publication Date: 2021-04-13
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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  • A kind of automobile water-based polymer coating composition
  • A kind of automobile water-based polymer coating composition
  • A kind of automobile water-based polymer coating composition

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 a water-based polymer coating composition for automobiles, which comprises the following components in parts by weight: (a) 10-50 parts of water-based acrylic resin secondary dispersion, (b) water-based polyester modified acrylic resin secondary dispersion 10-50 parts of dispersion, (c) 1-5 parts of dispersant, (d) 5-22 parts of pigment, (e) 5-15 parts of amino resin, (f) 5-30 parts of solvent, (g) auxiliary agent 1-10 parts; the weight sum of (a) and (b) accounts for 50-100% of the total weight. The water-based polymer coating composition for automobiles of the present invention solves the problems of long leveling time, low luster of water-based coating film and difficult leveling of water-based coating film in the prior art, and successfully reduces leveling time and pre-treatment time. The baking time, the length of the coating film is small, and the coating film is smoother. It is suitable for the coating of cars. After coating, it has the advantages of high gloss, excellent leveling, 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 Patents(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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