PURPOSE: To sufficiently enhance the releasability of a molding from a mold at the time of molding processing and to sufficiently ensure the sticking preventing effect of a molding and the lasting properties thereof by using a perfluoroalkyl group-containing ester compd. represented by a formula as an internal release agent. ;CONSTITUTION: An internal release agent added to and compounded with a resin or an elastomer is composed by a perfluoroalkyl group-containing ester compd. represented by formula (wherein R1 is a 2-20C perfluoroalkyl group which may be a straight chain one, a branched chain one, a cyclic one or one having a cyclic structure and R is a 2-30C alkyl group which may be a straight chain one, a branched chain one, a cyclic one or one having a cyclic structure). This internal release agent is generally added to and mixed with a resin or an elastomer when other additives are added to and mixed with the resin or the elastomer and subjected to molding processing.;COPYRIGHT: (C)1996,JPO
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