PHENOL-DENATURED POLYORGANOSILOXANE WITH REDUCED PLATINUM CONTENT, METHOD FOR PRODUCING SAME, AND ORGANIC RESIN MODIFIER CONTAINING SAME

摘要

Provided are a phenol-denatured polyorganosiloxane that is suitable as an organic resin modifier, has a small a platinum metal content, and is little yellowish, a method for producing the same, and an organic resin modifier containing the same. The phenol-modified polyorganosiloxane according to the present invention is a compound of formula (I) that has a platinum metal content of 0.9 ppm or less. The phenol-denatured polyorganosiloxane according to the present invention can be prepared by, for example, subjecting an alkenyl group substituted phenol compound of formula (IV) and a polyorganohydrogen siloxane of formula (V) to a hydrosilylation reaction in the presence of a platinum-based catalyst that is applicable to a homogenous system, and then conducting one or more kinds of filtration procedures selected from the group consisting of filtration with the addition of activated carbon, filtration using an activated carbon-containing filter and filtration using a cationic charge absorption filter, at least once either alone and/or in combination to reduce the platinum metal content to 0.9 ppm or less.