Patent ID: 9105822
Filing Date: 2015-08-11
Classification: C08G,C08K,C08L,H01L

Abstract:
1. A material for a molded resin, comprising (A) a polyorganosiloxane, (B) a white pigment, (C) a curing catalyst, (D), a cure rate controlling agent, and (E) a fluidity controlling agent, wherein the polyorganosiloxane (A) is a thermosetting polyorganosiloxane that is a liquid at normal temperature and normal pressure, the polyorganosiloxane (A) comprises an addition polyorganosiloxane represented by the following general formula (2) and having at least two silicon atom-bonded alkenyl groups in each molecule, where each R in formula (2) is independently selected from the group consisting of identical or different substituted or unsubstituted monovalent hydrocarbon groups, alkoxy groups and the hydroxyl group, at least 80% of the R is the methyl group, and n is a positive number that satisfies the white pigment (B) has: (a) a primary particle aspect ratio of 1.2 to 4.0, and (b) a primary particle diameter of 0.1 μm to 2.0 μm; the material having (i) a viscosity at a shear rate of 100 s the curing catalyst (C) is an addition polymerization catalyst, and a total content of the white pigment (B) and the fluidity controlling agent (E) is at least 50 weight % with regard to the entire material for a molded resin.