Organopolysiloxane containing mercapto group and alkoxysilyl group, and composition comprising same

Abstract

Provided is an organopolysiloxane which is expressed by average compositional formula (1) and which comprises: a mercapto group-containing organic group; and a trialkoxysilyl group-containing organic group and/or a dialkoxymethylsilyl group-containing organic group. The organopolysiloxane exhibits low volatility and excellent adhesiveness and adhesion with respect to an inorganic base material. (A)a(B)b(C)c(D)dSiO(4-a-b-c-d)/2  (1) (In the formula, A represents a mercapto group-containing organic group, B represents a trialkoxysilyl group-containing organic group or a dialkoxymethylsilyl-containing organic group, C represents a hydrolyzable group, D represents a C1-12 alkyl group, a C1-10 haloalkyl group, or a C6-12 aryl group, and a, b, c, and d represent numbers that satisfy 0<a<1,0<b<1,0<c<3,0≤d<1, and 0<a+b+c+d<4.)

Dependencies are inferred from the claim text.