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US 2011/0034620 A1Published application
Abrasion resistant silicone coating composition, coated article, and making method
AssigneeShin-Etsu Chemical Co., Ltd.
InventorKoichi HIGUCHI
Life of this patent
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Abstract
A silicone coating composition is provided comprising (A) a hydrolytic condensate obtained by (co)hydrolytic condensation of an alkoxysilane, (B) colloidal silica, (C) a urethane-modified vinyl polymer, (D) a curing catalyst, and (E) a solvent, the solid content of component (C) being 1 to 30% by weight based on the total solid content of components (A) and (B). The silicone coating composition can be coated and cured to an organic resin substrate without a need for primer, and the cured coating is abrasion resistant and transparent to visible light.
Claims13
An abrasion resistant silicone coating composition comprising
- (A) a hydrolytic condensate obtained by (co)hydrolytic condensation of at least one compound selected from alkoxysilanes having the general formula (1) and partial hydrolytic condensates thereof,
- R1mR2nSi(OR3)4-m-n (1)
- wherein Rl and R2 are each independently hydrogen or a substituted or unsubstituted monovalent hydrocarbon radical, the radicals of R1 and R2 may bond together, R3 is an alkyl radical of 1 to 3 carbon atoms, m and n are each independently 0 or 1, and m+n is 0, 1 or 2,
- (B) colloidal silica,
- (C) a polycarbonate and/or polyester base urethane-modified vinyl polymer,
- (D) a curing catalyst, and
- (E) a solvent, wherein
- the urethane-modified vinyl polymer (C) is present in a solid content of 1 to 30% by weight based on the total solid content of the hydrolytic condensate (A) and the colloidal silica (B).
5 more elements
Dependencies are inferred from the claim text.