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Coating composition containing polyamide-imide resin

A technology of imide resin and composition, applied in lubricating compositions, coatings, additives, etc., can solve problems such as weakening of lubricating durability, and achieve the effect of excellent lubricating durability

Active Publication Date: 2015-04-29
DOW CORNING TORAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] However, when a polyamide-imide resin composition using γ-butyrolactone as a solvent is used as a binder for a lubricant, the durability of lubrication of the binder on products treated therewith is different from the use based on The solvent situation of amides is weakened compared to

Method used

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  • Coating composition containing polyamide-imide resin
  • Coating composition containing polyamide-imide resin
  • Coating composition containing polyamide-imide resin

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example

[0066] Hereinafter, the present invention will be described in detail based on practical examples, but the present invention is not limited to these practical examples.

[0067] [Practical example 1]

[0068] Powdered graphite was added to a polyamide-imide resin solution (manufactured by Hitachi Chemical Co., Ltd.) prepared in 1,3-dimethyl-2-imidazolidinone (DMI). , solid content: about 30% by mass), the solution contains polyamide-imide resin dissolved in DMI, so that the content of powdered graphite is 50 parts by mass per 100 parts by mass polyamide-imide resin, and then Mix at room temperature. This mixture was diluted with DMI so that the solid content concentration was 15% by mass to form a coating composition to be used in evaluation tests.

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Abstract

The present invnetion relates to a coating composition comprising: (a) a resin solution containing a polyamide-imide resin and a solvent having a urea bond; and (b) a powdered solid lubricant. The coating composition containing a polyamide-imide resin does not raise any concern about reproductive toxicity and has excellent lubrication durability.

Description

technical field [0001] The present invention relates to coating compositions comprising polyamide-imide resins. [0002] This application claims priority from Japanese Patent Application No. 2012-172050 filed on Aug. 2, 2012, the contents of which are incorporated herein by reference. Background technique [0003] Polyamide-imide resins are resin materials that exhibit excellent heat resistance and mechanical strength. Polyamide-imide resins are therefore used as binder components of coating compositions having lubricious properties. [0004] Conventionally, polyamide-imide resins use amide-based solvents such as N-methylpyrrolidone (NMP), N-ethylpyrrolidone (NEP), N,N-dimethylacetamide, and N,N-dimethoxy Methylformamide was synthesized. This is because the amide-based solvent has excellent polyamide-imide resin solubility as a solvent and excellent handleability. [0005] However, the reproductive toxicity of amide-based solvents is a concern and there is a trend to con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D179/08C09D133/24C08K5/37C08L79/08
CPCC09D7/65C09D7/61C09D7/20C09D179/08C09D133/24C08K5/37C08L79/08C10M125/02C10M133/44C10M149/18
Inventor 山口哲司山下二郎
Owner DOW CORNING TORAY CO LTD
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