Patent ID: 7125926
Filing Date: 2006-10-24
Classification: C03C,C08G,C09D,G02B,Y10T

Abstract:
1. A surface treatment agent comprising: (A) a hydrolyzable metal alkoxide or a hydrolyzate thereof, (B) a fluorocompound containing a perfluoroalkyl group and a functional group reactive with the hydrolyzable metal alkoxide (A), (C) an adhesion improvement agent, and (D) a fluoropolymer having a number-average molecular weight of at least 500, wherein a one-layer film formed from the surface treatment agent has a graded refractive index structure, and the fluoropolymer (D) is a polymer of the general formula (3): wherein x and y are from 1 to 500, the structural unit M is derived from a fluorine-containing ethylenic monomer and is a structural unit derived from a fluorine-containing ethylenic monomer of the formula (M): (in which, X X X Rf a is an integer of from 0 to 3, and b and c are, the same or different, 0 or 1), and the structural unit N is a structural unit obtained by reacting an unsaturated carboxylic acid of the formula (A): (in which R X X f is 0 or 1), or a derivative thereof, with the Y