Patent ID: 9567468
Date: 2017-02-14
CPC Classifications: C08G,C09D

Claim:
1. A liquid coating composition for metallic surfaces consisting of: (A) at least one fluorine-containing silane compound of the formula (1), (B) at least one phosphorus-containing silane compound selected from the group consisting of (CH (C) at least one hydrolysable compound of the formula (2), wherein the molar ratio of compounds (A) to (B) is 1:1 to 1:20; and the molar ratio of compounds (B) to (C) is 1:8 to 1:1; and wherein the coating composition is a homogeneous liquid and (D) water, at least one acid and at least one organic solvent wherein letter i is an integer of 0 to 3, j is 0 or 1, and x is equal to 1 or 2, R Z is a divalent organic linking group, R is a divalent hydrocarbon group having 1 to 10 carbon atoms, R R wherein M represents an element selected from the group consisting of Si, Al, Ti, Zr, B, Ge, V, Pb, Sn and Zn, R X is a hydrolysable group, letter m is equal to 3 or 4 depending on the valence of M, and letter l is equal to 0, 1 or 2.