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US 6,855,768 B2Granted
Coating composition, coating method, and coated article
AssigneesShin-Etsu Chemical Co., Ltd., Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
InventorsKazuyuki Matsumura, Masaaki Yamaya, Koichi Higuchi, Muneo Kudo, Yoshifumi Kato, Takashi Komori, Toshihisa Shimo
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Abstract
A coating composition comprising the reaction product of a benzotriazole compound having a polymerizable vinyl group and a hydroxyl group with a silane compound and/or a (partial) hydrolyzate thereof is applied to plastic substrates, typically polycarbonate resin substrates to form transparent coatings having improved mar, weather and chemical resistance.
Claims8
A primer coating composition comprising:
- an alkoxy group-containing organic copolymer obtained by polymerizing monomer units comprising (I) a UV-absorbing benzotriazole based vinyl monomer, (II) an alkoxysilyl group-containing vinyl monomer, and (III) another copolymerizable monomer, wherein the alkoxysilyl group-containing vinyl monomer accounts for 0.1 to 50% by weight of the copolymer;
- and
- 0.1 to 50 parts by weight of a compound obtained by reacting an amino group-containing alkoxysilane with an epoxy group-containing alkoxysilane and a silylating agent and amidating the reaction product thereof, per 100 parts by weight of said organic copolymer.
Dependencies are inferred from the claim text.