Paint composition

A composition and coating technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve problems such as poor coating feel, and achieve the effects of excellent wear resistance and good solvent resistance

Active Publication Date: 2010-03-31
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the disadvantage that the coatings formed by the coating com

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3 and comparative example 1

[0025] Use raw material as shown in table 1, prepare coating composition according to the following method:

[0026] (1) After mixing the main resin, curing agent and optional matte powder, stir at 25°C for 40 minutes at a speed of 1200 rpm, and mix well;

[0027] (2) First add a solvent to the mixture obtained in step (1), stir and dissolve it thoroughly, then add a catalyst and an optional leveling agent and mix evenly to obtain a coating composition.

[0028] Table 1

[0029]

[0030] Coating method

[0031] The coatings prepared in Examples 1-3 and Comparative Example 1 were sprayed on the surface of the silicone rubber key with an automatic spraying line, and the film thickness was 15 microns. Then infrared baked at 145° C. for 30 minutes to obtain a test sample.

Embodiment 4-6 and comparative example 2

[0033] According to raw material as shown in table 2, prepare the coating composition used as printing ink according to the following method:

[0034] (1) After mixing the slightly branched polyester polyol A, the slightly branched polyester polyol B and the pigment, stir at a speed of 800-1600 rpm for 20-60 minutes at normal temperature and pressure, and mix well;

[0035] (2) join the product that step (1) obtains and grind in the grinder, until the ink fineness of testing grinding with scraper fineness gauge is about 5 microns;

[0036] (3) Add hydroxyacrylic resin and curing agent to the product obtained in step (2) and mix uniformly;

[0037] (4) Add solvent, catalyst and optional leveling agent and matt powder to the product obtained in step (3) and mix evenly.

[0038] Table 2

[0039]

[0040]

[0041] Coating method

[0042] The coating compositions prepared in Examples 4-6 and Comparative Example 2 were coated on the surface of the silicone rubber keys by sc...

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Abstract

The invention provides a paint composition, comprising: main body resin, a curing agent, a solvent and a catalyst, wherein the main body resin comprises micro branch polyester polyol and hydroxy acrylic resin, the micro branch polyester polyol A, and micro branch polyester polyol B, the weight average molecular weight of the micro branch polyester polyol A is 400-600, and the weight average molecular weight of the micro branch polyester polyol B is 1800-2500. The coatings obtained from the paint composition of the invention has advantages of excellent abrasive resistance, chemical resistance,solvent resistance, and well adhesive attraction and environment reliability, also has soft and smooth tactility.

Description

technical field [0001] The invention relates to a coating composition, more particularly to a coating composition for silicone rubber surfaces. Background technique [0002] Silicone rubber is widely used as buttons of electronic products such as mobile phones, game consoles, remote controls, and electronic dictionaries due to its good tactile feel. In practical application, because the surface energy of silicone rubber is very low, the adhesion and abrasion resistance of general display ink on its surface are poor, so it is necessary to protect the surface of the ink to make the display ink durable. Keys are often in contact with hands. Due to the different nature of people's work, the surface of the key may be exposed to different chemical substances or exposed to different environments. These chemical substances or environments will corrode the key to varying degrees. For example, in daily life, the cosmetics used by people will corrode the buttons, so the buttons need t...

Claims

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Application Information

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IPC IPC(8): C09D175/04C08J7/04C08L83/04
Inventor 钟海洪崔玉环石化文牟靖文
Owner BYD CO LTD
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