Patent ID: 7847050

Claim:
A crosslinkable organopolysiloxane composition comprising (A) a keto-containing organopolysiloxane having the compositional formula (1): [R 2 SiO] a [RSiO 3/2 ] b [R(Q)SiO] c [QSiO 3/2 ] d (1) wherein R is a keto-free monovalent organic group of 1 to 20 carbon atoms, Q is a keto-containing monovalent organic group of 2 to 20 carbon atoms, the subscripts a, b, c and d are numbers in the range: 0≦a<1, 0≦b<1, 0≦c≦0.3, 0≦d≦0.3, 0<c+d≦0.3, a+b+c+d=1, and (b+d)/(a+c)<1, and (B) a compound having at least two hydrazido and/or semicarbazido groups reactive with keto groups in the molecule.