Patent ID: 6733892
Filing Date: 2004-05-11
Classification: C09D,C09K,Y10T

Abstract:
A surface treatment composition, comprising:a partial hydrolysate of a fluorine-containing reactive silane represented by Formula (1): (Rfâ€”Qâ€”)a(R1)bSi(X1)4âˆ’aâˆ’bâ€ƒâ€ƒFormula (1) whereinRf is a monovalent fluorine-containing C1-30 organic group; Q is a single bond or a bivalent linking group; R1 is a hydrogen atom or a monovalent C1-16 organic group; a is 1 or 2; b is 0 or 1, and (a+b) is 1 or 2; and X1 is a hydrolyzable group; wherein a proportion (T1) of a molecule with a molecular weight of at most 2 M in the partial hydrolysate is less than 70% as calculated from Formula (A), wherein M is a molecular weight of the fluorine-containing reactive silane measured by gel permeation chromatography: T1(%)=[W2/W1]Ã—100â€ƒâ€ƒFormula (A); whereinW1 is a total peak area within a molecular weight range of from 300 to 100000 on a gel permeation chromatogram of the partial hydrolysate of the fluorine-containing reactive silane; and W2 is a total peak area within a molecular weight range of from 300 to 2 M on a gel permeation chromatogram of the partial hydrolysate of the fluorine-containing reactive silane; wherein a proportion (T2) of a molecule with a molecular weight of at least 6 M in the partial hydrolysate is less than 10% as calculated from Formula (B): T2(%)=[W3/W1]Ã—100â€ƒâ€ƒFormula (B); whereinW1 is a total peak area within a molecular weight range of from 300 to 100000 on a gel permeation chromatogram of the partial hydrolysate of the fluorine-containing reactive silane; and W3 is a total peak area within a molecular weight range of from 6 M to 100000 on a gel permeation chromatogram of the partial hydrolysate of the fluorine-containing reactive silane; and wherein the partial hydrolysate is obtained by partial hydrolysis of the fluorine-containing reactive silane in the presence of water and nitric acid.