Patent ID: 6787289
Filing Date: 2004-09-07
Classification: C08F,G02B,G03F,Y10S

Abstract:
A radiation sensitive refractive index changing composition comprising (A) a polymerizable compound, (B) a non-polymerizable compound having a lower refractive index than the polymer of the polymerizable compound (A), and (C) a radiation sensitive polymerization initiator,said non-polymerizable compound being selected from the group consisting of a polymer obtained by substituting a fluorine atom for the hydrogen atom of a resin which is selected from the ground consisting of acrylic resin, urethane resin, polyester resin, polycarbonate resin, norbornene resin, styrene resin, polyether sulfone resin, silicon resin, polyamide resin, polyimide resin, polysiloxane resin, fluororesin, polybutadiene resin, vinyl ether resin, and vinyl ester resin; a compound represented by the following formula (1) R1nSi(OR2)4âˆ’nâ€ƒâ€ƒ(1) wherein R1 and R2 may be the same or different and each is a monovalent organic group, and n is an integer of 0 to 2; a hydrolysate of said compound represented by formula (1); a condensate of said hydrolysate of said compound represented by formula (1); a ladder type polysilsesquioxane represented by the following formula (2) wherein R3 is a monovalent organic group, R4 is a hydrogen atom or monovalent organic group, R3 and R4 may be the same or different, and nâ€² is a positive integer corresponding to the molecular weight; a hydrolysate of said ladder type polysilsesquioxane represented by formula (2); and a condensate of said hydrolysate of said ladder type polysilsesquioxane represented by formula (2).