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

摘要

An adhesiveness imparting agent contains (a) a siloxane unit having an epoxy group, and (b) a bifunctional siloxane unit having an alkenyl group, wherein an Mw is 1000 to 15000. An adhesive polyorganosiloxane composition contains (A) 100 parts by mass of a polyorganosiloxane having an alkenyl group, (B) a polyorganohydrogensiloxane having a hydrogen atom in such an amount that an amount of the hydrogen atom becomes 0.1 to 4.0 per alkenyl group in the (A) component, (C) a catalytic amount of a platinum-based catalyst, and (D) 0.05 to 10 parts by mass of the adhesiveness imparting agent. There is provided an adhesive polyorganosiloxane composition excellent in adhesiveness to plastic such as PPA.