Patent ID: 8262809
Filing Date: 2012-09-11
Classification: C08G,C08K,C09D,C23C,Y10T

Abstract:
1. A metal surface treatment method for treatment of a surface of a metal material, comprising a treatment solution contact step of contacting the metal material with a metal surface treatment solution to form a chemical conversion coating film on the surface of the metal material; and a water washing step of washing the metal material with water after the treatment solution contact step; wherein the metal surface treatment solution, having a pH from 1.5 to 6.5, comprises: at least one selected from the group consisting of a zirconium compound and a titanium compound substantially not including fluorine, at least one selected from the group consisting of an inorganic acid and a salt thereof, a polyamine compound having a number average molecular weight from 150 to 500,000, and wherein the polyamine compound is an organosiloxane compound selected from one of following Formulas (17) to (21): where R represents —C