Insulating coating composition and insulating coating film
A technology of insulating coatings and compositions, applied in the direction of coatings, etc., can solve the problems of discoloration, affecting product characteristics, deterioration, etc., and achieve the effect of excellent weather resistance
Active Publication Date: 2021-02-23
住井科技(深圳)有限公司
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- Application Information
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Problems solved by technology
[0002] Conventional polyimide paint has a brownish color derived from the resin composition (polyimide precursor) contained in it, but when it is stored as a paint or after forming an insulating film, it is irradiated with ultraviolet rays contained in sunlight or the like. The main problem is that the solvent component is partially decomposed, and discoloration or deterioration occurs, which affects the characteristics of the final product.
Method used
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Embodiment
[0066] A diamine compound is dissolved in a solvent, and an acid dianhydride is added thereto for reaction, thereby obtaining a base polyimide varnish. The types and molar ratios of diamine and acid dianhydride are shown in Table 1.
[0067] A predetermined amount of filler was added to a predetermined amount of basic polyimide varnish while being stirred to obtain a filler-containing polyimide varnish. The type, particle size, addition amount, stirring method, and final solid content of fillers are shown in Table 1. Here, "final solid content" refers to the weight % of the resin part and the filler part in the varnish after the filler is mixed, and is calculated by (the weight of the resin part contained in the varnish+the weight of the filler) / the total weight of the varnish after mixing the filler×100. In the present disclosure, the final solids content may be 25-35 wt%.
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Abstract
The invention relates to an insulating coating composition and an insulating coating film. The insulating coating composition includes a polyimide precursor, an inorganic filler and a solvent, and exhibits L* of 5 or more and less than 70, a* of -10 or more and less than 10, and b* of 15 or more and less than 90 in a CIE L* a* b* system.
Description
technical field [0001] The present invention relates to an insulating coating composition excellent in weather resistance, visibility, and workability. Background technique [0002] Conventional polyimide paint has a brownish color derived from the resin composition (polyimide precursor) contained in it, but when it is stored as a paint or after forming an insulating film, it is irradiated with ultraviolet rays contained in sunlight or the like. The main problem is that the solvent component is partially decomposed, discolored or deteriorated, which affects the characteristics of the final product. Contents of the invention [0003] The problem to be solved by the invention [0004] In view of the above problems, an object of the present invention is to provide an insulating paint composition which is excellent in weather resistance, hardly deteriorates, and excellent in visibility and workability, and a method for improving the storage stability of the paint. [0005] m...
Claims
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Patent Timeline
Login to View More IPC IPC(8): C09D179/08C09D5/25C09D7/48
CPCC08K2201/005C08K2201/011C08K2201/014C08L2201/08C09D5/00C09D179/08C09D7/48C09D7/67C09D7/68C09D7/69C08L33/12C08K9/06C08K3/36
Inventor 尹勇
Owner 住井科技(深圳)有限公司