Branched polysiloxanes and their use

摘要

Branched, olefinically unsaturated and silicon hydride groups-containing polysiloxane polymers (I) are new. Branched, olefinically unsaturated and silicon hydride groups-containing polysiloxane polymers of formula (M a1-M1 a2-M2 a3-D11 b1-D1 b2-D2 b3-T c1-T1 c2-T2 c3-Q d) (I) are new. M : [R2(R1) 2SiO 1 / 2]; M1 : [(R1) 2HSiO 1 / 2]; M2 : [R3(R1) 2SiO 1 / 2]; D11 : [(R1) 2SiO 2 / 2]; D1 : [R1HSiO 2 / 2]; D2 : [R1R3SiO 2 / 2]; T : [R4SiO 3 / 2]; T1 : [HSiO 3 / 2]; T2 : [R3SiO 3 / 2]; Q : [SiO 4 / 2]; R1 : 1-30C hydrocarbyl (optionally branched and optionally saturated), preferably 1-30C aliphatic hydrocarbyl or 6-30C aromatic hydrocarbyl, preferably CH 3 (preferred) or phenyl; R2 : R1 (preferred), preferably CH 3, alkoxy or OH; R3 : olefinically unsaturated hydrocarbyl, preferably terminal double bond-containing hydrocarbyl, preferably allyl or vinyl (preferred); R4 : R1 or hydrocarbyl (optionally branched or cyclic, optionally saturated, and containing heteroatom); either a1, c2, c3 : 0-50, preferably 0; c1 : 0-50, preferably greater than 0; and d : 0-50, preferably 4-10; or c1+c2+c3+d : >= 1; a2, a3 : 1-50, preferably >= 4; b1 : 10-5000, preferably 10-500; and b2, b3 : 0-30, preferably 0. Independent claims are also included for: (1) preparing (I); and (2) a silicone composition comprising (I).