A kind of weather-resistant automobile repair varnish and preparation method thereof

An automotive and weather-resistant technology, applied in the field of coatings, can solve the problems of poor weather resistance and low adhesion, and achieve the effects of bending resistance, strong adhesion and good construction adaptability.

Active Publication Date: 2020-09-15
GUANGDONG YATU CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problems existing in existing automotive coatings (such as poor weather resistance, low adhesion, etc.), the invention provides a weather-resistant automotive repair varnish, which can maintain the hardness of the paint film while maintaining workability, drying speed, and appearance. , Adhesion and weather resistance are significantly improved

Method used

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  • A kind of weather-resistant automobile repair varnish and preparation method thereof
  • A kind of weather-resistant automobile repair varnish and preparation method thereof
  • A kind of weather-resistant automobile repair varnish and preparation method thereof

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Embodiment 1～4

[0040] Embodiments 1-4, weather-resistant automobile repair varnish of the present invention and its preparation

[0041] The formula of embodiment 1~4 of the present invention is as shown in table 1 below:

[0042] Table 1

[0043]

[0044] The preparation method of embodiment 1~4 of the present invention is as follows:

[0045] S1. Take methyl n-pentanone, 3-ethoxy ethyl propionate and dimethyl nylon acid and mix them to obtain solvent A, and put chlorotrifluoroethylene / vinyl ether copolymer resin and fluorine modified solvent into solvent A under stirring. Hydroxyl acrylic resin, after stirring for 2-5 minutes, add acrylate leveling agent and dibutyltin dilaurate, and stir for 10-15 minutes to obtain component A;

[0046] S2. Take xylene and butyl acetate and mix to obtain B solvent, then flush into nitrogen, add hexamethylene diisocyanate trimer under stirring, and stir for 10-15 minutes to obtain B component;

[0047] S3. Mix component A and component B according to...

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Abstract

The invention belongs to the technical field of coatings and particularly relates to weather-resistant automobile repair varnish and a preparation method thereof. The varnish is prepared from a component A and a component B in the weight ratio being 2:1 through mixing. The component A comprises raw materials in percentage by mass as follows: 10%-20% of chlorotrifluoroethylene / vinyl ether copolymerization resin, 58%-68% of fluorine modified hydroxyl acrylic acid, 17%-27% of a solvent A, 0.1%-0.6% of a leveling agent and 0.01%-0.05% of an organic tin drier; the component B comprises raw materials in percentage by mass as follows: 30%-40% of a hexamethylene diisocyanate trimer and 60%-70% of a solvent B. A film formed by the weather-resistant automobile repair varnish is flat and smooth, hasexcellent adhesion, hardness and other properties, has excellent weather resistance, is not prone to pulverization after being subjected to Q-UVB artificial accelerated aging for 5,000 h, has the gloss loss rate of 15% or below and the chromatic aberration delta E of 3 or below and has good application effects.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a weather-resistant automobile repair varnish and a preparation method thereof. Background technique [0002] Since the 1980s, automotive coatings have greatly improved in terms of impact resistance, decoration, anti-corrosion agents, and aging resistance. Development, especially the development of high-performance green and environmentally friendly coatings has become an inevitable trend in the industry. [0003] In the coating system of automotive coatings, varnish is the most critical coating film for protection and decoration, which gives people an intuitive impression and determines the comprehensive performance of the composite coating of automotive repair coatings. The automotive coatings currently on the market are basically composed of polyurethane resin or acrylic resin or amino resin system or two-component polyurethane system plus organic pigments, addit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/04C09D127/12C09D7/20
CPCC09D7/20C09D175/04C08L27/12
Inventor 冯兆均谭立斌王广坤陈容爱冯嘉伟
Owner GUANGDONG YATU CHEM
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