Liquid curable resin composition

Details Liquid curable resin composition Liquid curable resin composition

C - Chemistry, Metallurgy

08

G

C08G 18/48 (2006.01) C03C 17/32 (2006.01) C03C 25/10 (2006.01) C04B 41/48 (2006.01) C04B 41/83 (2006.01) C08G 18/32 (2006.01) C08G 18/66 (2006.01) C08G 18/67 (2006.01) G02B 1/10 (2006.01)

Patent

CA 2118421

2118421 9321248 PCTABS00027 A liquid curable resin composition comprising a urethane (meth)acrylate obtained by the reaction of: (A) a polyether polyol compound containing, as structural units, groups represented by the following formulas: (1) -CH2CH2O-, (2) -CH2CH(R)O-, and (3) one or more groups selected from groups (a) -CH2CH2CH2CH2O-, (b), and (c) as shown above, wherein R represents an alkyl group containing two or more carbon atoms, and R1 and R2 are independently selected from a hydrogen atom or a methyl group; (B) a polyisocyanate compound; and (C) a (meth)acrylate compound having a hydroxy group. The composition exhibits a high curing rate, its cured material has a low Young's modulus and a high gel ratio, provides superior heat resistance and light resistance, and generates only a small amount of hydrogen gas. It is thus particularly suitable as a material for optical fiber coating.

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