| 摘要 |
A metal-coupling composition composed of silane cross-linking and coupling agents wherein the coupling agent includes a vinyl moiety. The coupling composition is a replacement for iron-phosphatizing/chromate primering and chromate primering in zinc phosphatizing processes. In a preferred embodiment, the silane cross-linking agent has the formula (A) and X is a trivalent group, each Y is independently a divalent group or series of divalent groups, each Q is independently -R or -OR and each R is independently a C1-10 alkyl group or aryl group, and -OR group(s) are hydrolysable; and the silane coupling agent has the formula (B) each Q is independently -R or -OR and each R is independently a C1-10 alkyl group or aryl group, and -OR group(s) are hydrolysable. |
