Abstract This invention relates to (meth)acrylates represented by formula (1): <IMAGE> (1) wherein, R1 and R2 are each independently H or CH3 and average value of n is 1-5; resin composite comprising (A) an urethane (meth)acrylate and/or epoxy (meth)acrylate, (B) a (meth)acrylate represented by formula (1) above, (C) an ethylenically unsaturated compound other than component (A) or (B), and (D) a photopolymerization initiator; and cured products of said resin composites. The cured products of said resin composites of this invention have high refractive index and are superior in mold release property, shape reproducibility, restorability, and scratch resistance and suited in particular for transmission type screens.
A lens material for transmission screen comprising (A) a (meth)acrylate selected from the group consisting of a urethane (meth)acrylate, an epoxy (meth)acrylate, and a combination of a urethane (meth)acrylate and an epoxy (meth)acrylate, (B) a (meth)acrylate represented by formula (2): ##STR16## wherein, R 1 and R 2 are each independently H or CH 3 and average value of n is 1-5; (C) an ethylenically unsaturated compound other than component (A) or (B), and (D) a photopolymerization initiator.
Claim 2
Dependent Claim
77 words
A lens material for transmission screen comprising (A) a (meth)acrylate selected from the group consisting of a urethane (meth)acrylate, an epoxy (meth)acrylate, and a combination of a urethane (meth)acrylate and an epoxy (meth)acrylate, (B) a (meth)acrylate represented by formula (2): ##STR16## wherein, R 1 and R 2 are each independently H or CH 3 and average value of n is 1-5; (C) an ethylenically unsaturated compound other than component (A) or (B), and (D) a photopolymerization initiator.
Claim 3
Dependent Claim
67 words
A lens material for transmission screen described in claim 1, comprising (A) a (meth)acrylate selected from the group consisting of a urethane (meth)acrylate, an epoxy (meth)acrylate, and a combination of a urethane(meth)acrylate and an epoxy (meth)acrylate, (B) a (meth)acrylate represented by formula (4): ##STR17## wherein, average value of m is 1-4; (C) an ethylenically unsaturated compound other than component (A) or (B), and (D) a photopolymerization initiator.