| abstract |
The present invention provides a functional group represented by the formula -SiR 1 R 2 R 3 (wherein, R 1 , R 2 and R 3 represent an alkyl group, an alkoxy group or a hydroxyl group, and at least one represents an alkoxy group) in one molecule ( a) is a hydrophilic functional group selected from at least two, hydroxyl groups (different from those which may be contained in the functional group (a)), amino groups, carboxyl groups, phosphoric acid groups, phosphonic acid groups, sulfone groups, polyoxyethylene chains and amide groups It relates to an aqueous metal surface treatment agent, a treatment method and a treatment metal material which contain one or more (b) and mix | blend the organosilicon compound whose molecular weight is 100-10000 per functional group (b). The water-based metal surface treatment agent can form a film having not only excellent corrosion resistance and adhesion but also heat resistance, weldability, continuous processability and conductivity of the inorganic coating, and anti-fingerprint and coating properties of the organic coating. |