Polyurethane paint for disposable spray finishing and application

A polyurethane coating, one-time technology, applied in polyurea/polyurethane coatings, coatings, etc., can solve the problems of high energy consumption, low processing efficiency, high cost, etc., and achieve simple spraying process, low energy consumption and cost, and less pollution Effect

Inactive Publication Date: 2009-02-04
深圳市美丽华科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the need for multiple spraying, the processing efficien

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Get 24.6 parts (weight) of hydroxyl acrylic resin, 23.2 parts (weight) of thermoplastic acrylic acid, add 0.5 part (weight) of defoamer and 0.5 part (weight) of leveling agent, wherein defoamer selects BYK-141 type defoamer for use, The leveling agent is BYK-354 type wetting agent. After the formed mixture is uniformly dispersed at a low speed, 31.7 parts (weight) of butyl acetate solvent are added, then stirred for 10 minutes, and then 19.5 parts (weight) of black color paste are added. Disperse evenly and filter with 300 mesh gauze to get the finished product.

Embodiment 2

[0046] Get 27.01 parts (weight) of hydroxyl polyurethane resin, 25.47 parts (weight) of thermoplastic acrylic acid, add 0.5 part (weight) of BYK-141 type defoamer and 0.5 part (weight) of BYK-354 type wetting agent, after low speed dispersion, Add 30 parts (by weight) of butyl acetate thickener, stir for 10 minutes, then add 16.52 parts (by weight) of black color paste, disperse evenly, and filter with 300 mesh gauze to obtain the finished product.

Embodiment 3

[0048] Take 30 parts (weight) of hydroxyl polyurethane resin, 29 parts (weight) of thermoplastic acrylic resin, add 0.5 parts (weight) of BYK-141 type defoamer and 0.5 parts (weight) of BYK-354 type wetting agent, and disperse evenly at low speed , add 25 parts (weight) of butyl acetate, stir for 10 minutes, then add 15 parts (weight) of black color paste, disperse evenly and filter with 300 mesh gauze to get the finished product.

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PUM

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Abstract

The present invention relates to a polyurethane coating sprayed for one time and an application thereof. The weight percentages of the ingredients of the coating are as follows: 20 to 30 percent of hydroxylated acrylic resin; 20 to 30 percent of thermoplastic acrylic resin; 30 to 40 percent of butyl acetate, 0.2 to 1 percent of leveling agent; 0.2 to 1 percent of defoamer; 5 to 10 percent of solvent. In addition, 1 to 25 percent of color sizing can be added into the formula. The solid content of the hydroxylated acrylic resin and the thermoplastic acrylic resin is equal to or larger than 40 percent; the leveling agent is acrylic ester; the defoamer is organic silicon; the solvent is propylene glycol monomethyl ether acetate; the color sizing is mixture composed of inorganic or organic pigment, dispersant, acrylic resin and solvent. The coating of the present invention can be sprayed on the plastic shells of electronic products and electric appliances. The coating is characterized by simple spraying technique, low energy consumption, low cost, relatively low pollution, more environment-friendliness, etc.

Description

【Technical field】 [0001] The invention relates to an organic coating, in particular to a polyurethane coating for one-time spraying which is used for spraying plastic casings of electronic and electrical appliances and only needs to be sprayed once. 【Background technique】 [0002] At present, various electronic or electrical products, such as digital cameras, notebook computers, mobile phones, etc., have been widely used in people's lives. The shells of these products are mostly made of plastics and plastic materials, and the shells all need to be sprayed with coatings for protection and decoration on the surface after processing and molding. The traditional coatings for casings are mostly thermoplastic acrylic primers and polyurethane coatings for the top coat. The spraying process generally adopts the process of spraying the primer, middle coat and top coat respectively. Due to the need for multiple spraying, the processing efficiency is low, the energy consumption is hig...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D133/00C08J7/04
Inventor 鲁春风
Owner 深圳市美丽华科技股份有限公司
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