Patent ID: 9518200
Filing Date: 2016-12-13
CPC Classification: C08F,C09J,Y10T

Claim Text:
1. A curable resin composition, comprising: a polymerizable vinyl monomer, a curing agent comprising an organic peroxide, a paraffin, a (meth)acrylic acid, a reducing agent, and an acrylic block copolymer having a structure of formula (II): wherein [a [a [b] is a polymer block consisting of poly-n-butylacrylate, and having a glass transition temperature of from −50 to −45° C.; a ratio of a total mass of [a the polymerizable vinyl monomer comprises from 30 to 80 parts by mass of (A) a methylmethacrylate monomer, from 10 to 50 parts by mass of (B) a phenoxyethylmethacrylate monomer and/or a 2-hexylethylmethacrylate monomer, and from 1 to 20 parts by mass of (C) a 2,2-bis(4-(meth)acryloxydiethoxyphenyl)propane monomer and/or an ethylene oxide-modified bisphenol A dimethacrylate monomer; the curable resin composition, when cured, has a haze of from 3% to 10%, expressed as a ratio of diffuse transmittance over luminous transmittance; wherein a total content of the polymerizable vinyl monomer, the curing agent, the paraffin, the (meth)acrylic acid, the reducing agent, and the acrylic block copolymer having a structure of formula (II) is at least 90 mass %; and a content of the acrylic block copolymer is from 40 to 70 parts by mass per 100 parts by mass of the polymerizable vinyl monomer.