Patent ID: 6827981
Filing Date: 2004-12-07
Classification: C23C,Y10T

Abstract:
A method of treating a metal surface, comprising the steps of:(a) providing a metal surface, said metal surface chosen from the group consisting of: a metal surface having a zinc-containing coating; zinc; and zinc alloy; and (b) applying a silane solution to said metal surface, said silane solution having at least one vinyl silane and at least one bis-silyl aminosilane, wherein said at least one vinyl silane and said at least one bis-silyl aminosilane have been at least partially hydrolyzed, and wherein the bis-silyl aminosilane comprises: wherein:each R6 is individually chosen from the group consisting of: hydrogen and C1-C24 alkyl; each R3 is individually chosen from the group consisting of: substituted aliphatic groups, unsubstituted aliphatic groups, substituted aromatic groups, and unsubstituted aromatic groups; and X2 is either: wherein each R4 is hydrogen; and R5 is chosen from the groups consisting of: substituted and unsubstituted aliphatic groups, and substituted and unsubstituted aromatic groups; and wherein the ratio (by volume) of the total concentration of vinyl silanes to the total concentration of bis-silyl aminosilanes in said silane solution is greater than 5.