ROSIN-BASED MOLECULAR CRYSTAL, NUCLEATING AGENT FOR POLYOLEFIN RESIN, POLYOLEFIN RESIN COMPOSITION, AND MOLDINGS THEREOF

摘要

A rosin-based molecular crystal comprising the following components A and B: A: dehydroabietic acid or a rosin-based resin acid composed mainly of dehydroabietic acid, and B: at least one alkali metal salt of rosin-based resin acid selected from the group consisting of lithium, sodium, and potassium salts of the component A; a nucleating agent for polyolefin resins comprising the rosin-based molecular crystal; a polyolefin resin composition comprising the nucleating agent and optionally a calcium compound; and moldings prepared by molding the resin composition.