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Priming coating composition and preparation method thereof

A composition and coating technology, used in polyether coatings, polyester coatings, anti-corrosion coatings, etc., can solve problems such as low adhesion, and achieve the effects of improving adhesion, increasing hardness, and improving construction performance

Inactive Publication Date: 2008-04-02
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the invention is to overcome the disadvantages of low adhesion of existing primer coatings, to provide a primer coating with higher adhesion and a preparation method thereof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0024] The preparation method of the multi-layer primer coating of the present invention, the method comprises: mixing thermoplastic acrylic resin and solvent uniformly, then adding pigment, stirring uniformly, wherein, the method also includes adding auxiliary The film-forming components are uniformly mixed, and the auxiliary film-forming components are hydroxyl polymer resins and / or vinyl acetate resins, and the hydroxyl polymer resins are selected from hydroxyl acrylic resins, hydroxyl polyester resins, hydroxyl polyether resins, hydroxyl One or more of alkyd resin or epoxy resin.

[0025] According to the preparation method of the coating composition of the present invention, the addition amount of thermoplastic acrylic resin, solvent, pigment and auxiliary film-forming component is such that the obtained coating composition contains, based on the total weight of the coating composition, 20-60% by weight thermoplastic acrylic resin, 5.0-20% by weight of auxiliary film-form...

Embodiment 1

[0033] 30 grams of thermoplastic acrylate resin (model A-21, glass transition temperature of 105 ° C, product of Rohm and Haas, USA), 10 grams of hydroxy acrylate resin (TIRES 4702, product of NUPLEX), CAB resin (CAB-381- 0.5, Eastman product) 3 grams, leveling agent (EFKA3777) 1.0 grams, and a mixed solvent composed of 15 grams of toluene, 12 grams of butyl acetate, and 4 grams of n-butanol are mixed and stirred until fully dissolved. Then add 10 grams of silver paste (5660NS, Japanese Toyo product) in above-mentioned mixed solution, fully stir to evenly, filter and leave standstill, add isocyanate (model N3390, German Bayer product) 2 grams again, obtain the coating composition provided by the invention X1.

[0034] Based on the total weight of the coating composition, the composition X1 is composed of 34.5% by weight of thermoplastic acrylate resin, 11.5% by weight of hydroxyacrylate resin, 3.4% by weight of CAB resin, 1.1% by weight of leveling agent, and 35.6% by weight o...

Embodiment 2

[0039] With thermoplastic acrylate resin (model A-21, glass transition temperature is 105 ℃, U.S. Rohm and Haas company product) 36 grams, epoxy resin (brand is E-20 or E-12) 12 grams and toluene 8 grams, The mixed solvent that butyl acetate 6 grams, n-butanol 2 grams form and silver paste (5660NS, Japanese Toyo product) 16 grams are made coating composition X2 of the present invention by the preparation method of embodiment 1, with the total amount of coating composition Based on weight, the composition X2 is composed of: 45% by weight of thermoplastic acrylate resin, 12% by weight of epoxy resin, 20% by weight of solvent, and 20% by weight of silver paste.

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PUM

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Abstract

The present invention discloses a priming dope compound; the compound comprises hot plastic acryl resin, palette and solvent. Wherein, the compound also comprises an assistant film component; the assistant film component can be divided into hydroxyl polymer resin, and or chloroacetic resin. The hydroxyl polymer resin can select one or more than one among hydroxyl acrylic acid resin, hydroxyl polyester resin, hydroxyl polyether resin, hydroxyl alkyd or epoxide resin. The priming dope compound has the advantages of much better coating performance, much better adhesion performance between different lacquer levels when making multi-painting; in addition, the rigidity of the lacquer level after being solidified is much higher.

Description

technical field [0001] The invention relates to a primer coating composition and a preparation method thereof. Background technique [0002] At present, the surface of some products, such as the paint layer on the surface of a plastic product, generally includes a primer layer and a topcoat layer. These plastic parts can be, for example, mobile phone shells, mobile phone keyboards, laptops, and cosmetic containers. The primer layer is generally formed by thermoplastic acrylic resin paint, and the top coat layer is generally formed by ultraviolet light curing paint or two-component polyurethane acrylate paint. In this system, the base coat primarily provides the decorative color of the fitting, while the top coat provides surface protection for the base coat as well as the entire fitting. The primer layer can generally be applied in one layer, but sometimes it can also be composed of multiple layers in order to achieve special color effects or functions. [0003] The primer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/00C09D5/12C09D167/00C09D171/00C09D163/00
Inventor 谭伟华贺茂英靳祥东
Owner BYD CO LTD
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