Organohydrogenpolysiloxane, making method, and addition-cure silicone composition

摘要

An organohydrogenpolysiloxane comprising at least two structural units of (HR<Sup>1</Sup>SiO)<Sub>a</Sub>- wherein R<Sup>1</Sup> is a monovalent hydrocarbon group, and a is an integer of 2-50, which are connected together via a SiH-free structural unit, is a novel crosslinking agent. A silicone composition comprising an alkenyl-containing organopolysiloxane, the organohydrogenpolysiloxane, and a catalyst is curable through addition reaction, adherent to plastic substrates, and useful for coating purposes.