Patent ID: 7902314

Claim:
A method for preparing a composition, comprising: reacting an organosilicon hydride having a structure (M 1 ) a (M H ) b (D 1 ) c (T) e (Q) f with an epoxyolefin to form a first intermediate product having a structure (M 1 ) a (M E ) b (D 1 ) c (T) e (Q) f ; wherein M 1 =R 1 R 2 R 3 SiO 1/2 ; M H =R 4 R 5 HSiO 1/2 ; D 1 =R 6 R 7 SiO 2/2 ; T=R 10 SiO 3/2 ; Q=SiO 4/2 ; and M E =R 4 R 5 R E SiO 1/2 ; wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , and R 10 are independently monovalent hydrocarbon radicals; each R E is independently a monovalent hydrocarbon radical containing an epoxy group; and a, b, c, e, and f are stoichiometric subscripts that are zero or positive subject to the following limitations: b has a value such that 0<b≦2; and when (a+c+e+f) is equal to zero, b is equal to 2; reacting said first intermediate product with a cyclic siloxane having a structure (D 6 ), to form a second intermediate product having a structure (M 1 ) a (M E ) b (D 1 ) c (D 6 ) o (T) e (Q) f ; wherein D 6 is R 8 R 28 SiO 2/2 , wherein R 8 is a monovalent hydrocarbon radical, R 28 is a monovalent alkenyl group; a, b, c, e, f, n, and o are stoichiometric subscripts that are zero or positive subject to the following limitations: n is greater than or equal to 3; o is at least 1; b has a value of 2; and when (a+c+e+f) is equal to zero, (b+o) is greater than or equal to 3; and reacting said second intermediate product with an (alkoxy)hydrosilane to form said composition having a structure (M 1 ) a (M E ) b (D 1 ) c (D 2 ) d (T) e (Q) f ; wherein M 1 =R 1 R 2 R 3 SiO 1/2 ; M E =R 4 R 5 R E SiO 1/2 ; D 1 =R 6 R 7 SiO 2/2 ; D 2 =R 8 R 9 SiO 2/2 ; T=R 10 SiO 3/2 ; and Q=SiO 4/2 ; wherein each R E is independently a monovalent hydrocarbon radical containing an epoxy group; R 9 comprises a pendant functional organosilicon group comprising a structure -L 1 -Si(R 11 ) g (OR 12 ) 3-g or L 2 (D 3 ) h -L 3 -Si(R 13 ) g ,(OR 14 ) 3-g′ , wherein L 1 , L 2 , and L 3 are independently divalent linking groups; g and g′ independently have a value from 0 to 2; D 3 =R 18 R 19 SiO 2/2 ; wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 10 , R 11 , R 12 , R 13 , R 14 , R 15 , R 16 , R 17 , R 18 , and R 19 are independently monovalent hydrocarbon radicals; wherein a, b, c, d, e, f, h, and i are stoichiometric subscripts that are zero or positive subject to the following limitations: b has a value of 2; d is greater than or equal to 1; when (a+c+e+f) is equal to zero, (b+d) is greater than or equal to 3; and when i=0, h is at least 1.