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US 4,098,749 AGranted
Anticorrosion primer coating composition
AssigneeDai Nippon Toryo Co., Ltd.
InventorsMinoru Hoshino, Toshio Shinohara, Yukio Kawahara, Katsuji Takase, Toshimoto Tsuji, Jun-ichi Fukuda
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Abstract
The present invention relates to an anticorrosion primer coating composition comprising (i) a polyvinyl butyral resin, (ii) an organo functional silane, (iii) at least one member selected from the group consisting of inorganic borate compounds and polyphosphate compounds, and (iv) phosphoric acid.
Claims10
An anticorrosion primer coating composition comprising
- (i) 100 parts by weight of a polyvinyl butyral resin,
- (ii) 1 to 25 parts by weight of at least one organo functional silane selected from the group consisting of aminoalkoxysilane compounds represented by the following general formula:
- ##STR4## wherein R.sup.1 stands for a divalent hydrocarbon group having 1 to 4 carbon atoms, R.sup.2 and R.sup.3 represent a monovalent hydrocarbon group having 1 to 4 carbon atoms, Z stands for a hydrogen atom or an aminoalkyl group, and m is 1 or 0, and alkylalkoxysilane compounds represented by the following general formula:
- ##STR5## wherein R.sup.4 stands for a divalent hydrocarbon group having 1 to 4 carbon atoms, R.sup.5 and R.sup.6 represent a monovalent hydrocarbon group having 1 to 4 carbon atoms, Q stands for a methacryloxy, acryloxy, glycidoxy or epoxycyclohexyl group, and n is 1 or 0.
- (iii) 20 to 350 parts by weight of at least one member selected from the group consisting of inorganic borate compounds and polyphosphate compounds and (iv) 5 to 50 parts by weight of phosphoric acid.
2 more elements
Dependencies are inferred from the claim text.