Patent ID: 9698320
Date: 2017-07-04
CPC Classifications: C07F,C08G,C08K,C08L,H01L

Claim:
1. A polyhedral polysiloxane composition, comprising a modified polyhedral polysiloxane which is obtained by hydrosilylation of an alkenyl group-containing polyhedral polysiloxane compound (a) and an organic silicon compound (a′) having one alkenyl group per molecule and at least one aryl group per molecule with a hydrosilyl group-containing compound (b), wherein the hydrosilyl group-containing compound (b) is a hydrosilyl group-containing cyclic siloxane and wherein the organic silicon compound (a′) is a silane, wherein the polyhedral polysiloxane composition has a viscosity at 23° C. of not less than 1 Pa·s and up to 5.9 Pa·s; and the modified polyhedral polysiloxane, comprises a siloxane unit represented by the formula: wherein a+b is an integer of 6 to 24, provided that a is an integer of 1 or larger and b is an integer of 0 or 1 or larger; R wherein l is an integer of 2 or larger; n is an integer of 2 or larger; Z is hydrogen, alkenyl, alkyl, aryl, or a moiety bonded to a polyhedral polysiloxane via an alkylene chain, and Zs may be the same as or different from one another, provided that at least one of Zs is hydrogen, and at least one of Zs has a structure represented by the formula (3): wherein l is an integer of 2 or larger, and R a phosphor; and further comprising a compound (B) having at least two alkenyl groups per molecule.