| abstract |
PURPOSE: To obtain the subject compsn. excellent in flame resistance and flowability by constituting the same of a thermoplastic aromatic polycarbonate and a predetermined amt. of a specific graft polymer, a P-compd. and an anti- drip agent. n CONSTITUTION: The objective compsn. is constituted of a thermoplastic aromatic polycarbonate, a graft polymer (e.g. ABs) obtained by graft-polymerizing a predetermined amt. of a mixture consisting of one or more component selected from (α-methyl)styrene and halogenostyrene and one or more component selected from (meth)acrylonitrile and methyl methacrylate in a predetermined ratio with a predetermined amt. or more of a rubber with a predetermined glass transition temp., a P-compd. represented by formula I [wherein R 1 is H or 1-8C alkyl, R 2 is groups represented by formulae II-III (wherein R 3 is 1-4C alkyl, phenyl or aralkyl) and (m) and (n) are respectively predetermined numerical values], an anti-drip agent composed of a silicone resin represented by formula IV [wherein R is a (substd.) monovalent hydrocarbon group, R' is alkyl or H and (x) and (y) are predetermined numerical values] and tetrafluoroethylene having specific properties in a predetermined amt. ratio. n COPYRIGHT: (C)1992,JPO |