Aromatic polycarbonate resin blends
AssigneeGeneral Electric Company
InventorDwight J. Patterson
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Abstract
An aromatic polycarbonate resin blend characterized by improved melt-flow properties particularly suited for blow molding. The blend consists of at least 80 percent of cyclic polycarbonate oilgomer or polycarbonate molding resin, the remainder being an aromatic hydroxylated resin such as a phenoxy resin, together with a curing agent.
Claims15
A method for preparing an aromatic polycarbonate resin blend having improved flow properties for blow molding, said method comprising:
- blending (by weight) with each 100 parts of a cyclic polycarbonate oligomer or a polycarbonate molding resin about 0.5 to 25 parts of a thermoplastic hydroxyplated resin with an average molecular weight range of about 15,000 to 75,000 and an amount of anionic polymerization catalyst effective to cure said blend when heated to a temperature above 150.degree. C.;
- and,
- curing said blend at a temperature of 150.degree. C. to about 300.degree. C.
A curable thermoplastic molding resin composition comprising an aromatic polycarbonate polymer and from about 0.5 to 25 parts by weight of a thermoplastic hydroxylated resin with an average molecular weight range of about 15,000 to 75,000 for each 100 parts of said polycarbonate polymer and an amount of anionic polymerization catalyst effective to cure said blend when heated to a temperature above 150.degree. C.
A composition comprising
- (1) an aromatic polycarbonate polymer or cyclic polycarbonate oligomer admixed with
- (2) from about 0.5 to 25 weight percent of a thermoplastic hydroxylated resin which is a phenoxy;
- and
- (3) an anionic polymerization catalyst in an amount effective to induce curing of the composition at a temperature above 150.degree. C.
Dependencies are inferred from the claim text.