Patent ID: 7638172
Filing Date: 2009-12-29
Classification: C09D,C23C

Abstract:
1. A non-chromate aqueous metal surface treating composition comprising [I] an organosilicon compound obtained through hydrolysis of a mixture comprising (A) 100 parts by weight of a hydrolyzable silane bearing a nitrogen-containing organic group having the general formula (1): wherein R 1 is a nitrogen-free, substituted or unsubstituted, monovalent hydrocarbon group of 1 to 8 carbon atoms, R 2 is an alkoxy or acyloxy group of 1 to 4 carbon atoms, Y is a nitrogen-containing organic group having the general formula (3): wherein R 4 and R 5 , which may be the same or different, are selected from hydrogen and monovalent hydrocarbon groups of 1 to 8 carbon atoms, R 6 and R 7 , which may be the same or different, are selected from divalent hydrocarbon groups of 1 to 8 carbon atoms, and p is an integer of 1 to 3, and m is 0 to 1, or a partial hydrolyzate thereof, and (B) 5 to 200 parts by weight of a hydrolyzable silane having the general formula (2): wherein R 1 is as defined above, R 3 is an alkoxy or acyloxy group of 1 to 4 carbon atoms, n is 0 or 1, and a is an integer of 1 to 10, or a partial hydrolyzate thereof, and [II] water.