Curable composition, cured product, and method for using curable composition

摘要

The present invention is: a curable composition comprising a component (A) and a component (B) in a mass ratio (component (A):component (B)) of 100:0.3 to 100:40, the component (A) being a silane compound copolymer that is represented by a formula (a-1), and has a weight average molecular weight of 800 to 30,000,
(CHR1X0-D-SiO3/2)m(R2SiO3/2)n(CHR1X0-D-SiZO2/2)o(R2SiZO2/2)p(CHR1X0-D-SiZ2O1/2)q(R2SiZ2O1/2)r   (a-1)
wherein R1 is a hydrogen atom, etc., X0 is a halogen atom, etc., D is a single bond, etc., R2 is a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, etc., Z is a hydroxyl group, etc., m and n are independently a positive integer, and o, p, q, and r are independently 0 or a positive integer, and the component (B) being a silane coupling agent that includes a nitrogen atom in its molecule. With the invention, it is possible to provide: a curable composition that produces a cured product that exhibits excellent heat resistance, excellent transparency, and high adhesion; a cured product obtained by curing the curable composition; and a method for using the curable composition as an optical device adhesive, etc.

主权项

1. A curable composition comprising a component (A) and a component (B) in a mass ratio (component (A):component (B)) of 100:1 to 100:20,
the component (A) being a silane compound copolymer that is represented by a formula (a-1), and has a weight average molecular weight of 800 to 30,000,
(CHR1X0-D-SiO3/2)m(R2SiO3/2)n(CHR1X0-D-SiZO2/2)o(R2SiZO2/2)p(CHR1X0-D-SiZ2O1/2)q(R2SiZ2O1/2)r   (a-1) wherein R1 is a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, X0 is a halogen atom, a cyano group, or a group represented by OG (wherein G is a protecting group for a hydroxyl group), D is a single bond or a substituted or unsubstituted divalent organic group having 1 to 20 carbon atoms, R2 is a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms (excluding a case where the alkyl group is substituted with a halogen atom, a cyano group, or the group represented by OG), or a substituted or unsubstituted phenyl group, Z is a hydroxyl group, an alkoxy group having 1 to 10 carbon atoms, or a halogen atom, m and n are independently a positive integer, and o, p, q, and r are independently 0 or a positive integer, and the component (B) being a 1,3,5-N-tris(trialkoxysilylalkyl) isocyanurate represented by a formula (b-3), or an N,N′-bis(trialkoxysilylalkyl)urea represented by a formula (b-4), wherein each of Ra is an alkoxy group having 1 to 6 carbon atoms, provided that a plurality of Ra are either identical or different, and t1 to t5 are independently an integer from 1 to 10.