| 摘要 |
Branched organosiloxane (co)polymers comprising the structural elements of the formula Y[-CnH2n-(R2SiO)m-Ap-R2Si-G]x (I) where Y is a tri- to decavalent, optionally heteroatom-containing hydrocarbon radical, R is a monovalent, optionally halogenated hydrocarbon radical, A is a radical of the formula -R2Si-R2-(R2SiO)m-, in which R2 is a divalent hydrocarbon radical, G is a monovalent radical of the formula -CfH2f-2-Z or a divalent radical of the formula -CnH2n- bonded to a further radical Y, Z is a monovalent hydrocarbon radical which is free from terminal aliphatic carbon-carbon multiple bonds, and is inert toward SiH groups in hydrosilylation reactions, x is an. integer from 3 to 10, f is an integer from 2 to 12, k is 0 or 1, n is an integer from 2 to 12, m is an integer which is at least 1, and p is 0 or a positive integer, with the proviso that the branched organosiloxane (co)polymers contain on average at least one group Z.
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