A kind of scratch-coating type mid-coat automotive coating based on thermoplastic acrylic resin and preparation method thereof

A thermoplastic acrylic and resin technology, applied in the direction of coating, can solve problems such as heavy workload, and achieve the effect of improving adhesion, reducing cracking of topcoat, and excellent smoothness of topcoat
CN109321053BActive Publication Date: 2021-03-23清远永昌涂料有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
清远永昌涂料有限公司
Publication Date
2021-03-23

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Abstract

The invention discloses scrape coating type under coat automobile paint based on thermoplastic acrylic resin. The paint is prepared from the following ingredients in parts by weight: 38-44 parts of thermoplastic acrylic resin, 20-25 parts of powder, 0.5-1 part of a wetting dispersant BYK-W966, 2-8 parts of pigment and 0.1-0.3 part of a pigment dispersant; xylene is added until the total weight ofa system is 100 parts by weight; the thermoplastic acrylic resin is NeoCryl B-735 solid thermoplastic acrylic resin. The paint disclosed by the invention has the following excellent properties: 1, thescrape coating hand feeling is good; 2, the solid content is high, the viscosity is not high, and the VOC (volatile organic compounds) discharge is reduced; 3, the ductility is consistent with the ductility of finishing coat; 4, the adhesive force with the finishing coat is good; and 5, the viscosity is low in a high-temperature condition and high in a low-temperature condition.
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Description

technical field

[0001] The invention relates to the field of automotive intermediate coatings, in particular to a scraping type intermediate coating automotive coating based on thermoplastic acrylic resin and a preparation method thereof. Background technique

[0002] Intermediate coating is a coating applied between primer and topcoat. With the development of science and technology, water-based intermediate coating has made great progress. For example, CN201510580874.3 discloses a water-based intermediate coating, calculated by weight percentage, The water-based intermediate paint includes 50-60% epoxy-silicone resin modified polyurethane-acrylic water dispersion, 17-23% anti-rust pigment, 12-17% filler, 0.1-0.3% wetting agent, 0.4-3% propylene glycol-methyl ether, 0.1-0.4% defoamer, 0.1-0.3% dimethylethanolamine and the balance of water. The water-based intermediate paint uses the above-mentioned water dispersion as the base material. The coating film not only has the cha...

Claims

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