ADHESIVENESS-IMPARTING AGENT, ADHESIVE POLYORGANOSILOXANE COMPOSITION, AND OPTICAL SEMICONDUCTOR DEVICE

摘要

This adhesiveness-imparting agent is characterized by: containing a siloxane unit (a) that comprises an epoxy group and a bifunctional siloxane unit (b) that comprises an alkenyl group; and by having a molecular weight (Mw) of 1,000-15,000. Also provided is an adhesive polyorganosiloxane composition containing: 100 parts by mass of a polyorganosiloxane (A) comprising an alkenyl group; an amount of a hydrogen atom-containing polyorganohydrogen siloxane (B) that corresponds to 0.1-4 hydrogen atoms per alkenyl group in the component (A); a catalytic amount of a platinum catalyst (C); and 0.05-10 parts by mass of the adhesiveness-imparting agent (D). The present invention provides an adhesive polyorganosiloxane composition that exhibits good adhesiveness with respect to plastics such as PPA.