Abstract: A polyestercarbonate copolymer blend which exhibits a glass transition temperature lower than bisphenol-A carbonate homopolymer, shows improved processability and fire-retardancy. The desired lower Tg and improved flow can be achieved by the polycondensation of a dihydric phenol and aliphatic dicarboxylic acid. The condensate is polymerized with a carbonate forming reagent. The resin is fire-retarded with a mixture of halogenated polycarbonate, potassium diphenylsulfone sulfonate and polytetrafluoroethylene.

Abstract: A composition comprising an admixture of(a) an aromatic polycarbonate of intrinsic viscosity of from about 0.35 to about 0.41 dl/g, measured in methylene chloride at about 25.degree. C., said aromatic polycarbonate chain terminated with an endcapping agent which provides the polycarbonate with improved ductility and higher Tg when compared to a paratertiary butyl phenol encapped polycarbonate of the same intrinsic viscosity;(b) a core/shell copolymer comprising a conjugated diene with a Tg of less than or equal to -10.degree. C. as the core, said core being about 50 to 90 wt.

Abstract: Apparatus and method for the pultrusion of polymeric resins reinforced with continuous lengths of multifilaments and/or fibers comprises wetting the lengths of multifilaments and/or fibers with a polymerization initiator, passing the wet length through an impregnating bath of a resin prepolymer and activating the polymerization in-situ.

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.

Abstract: Cyclic polycarbonate (or thiol analog) oligomer mixtures are prepared by the reaction of bishaloformates or their thio analogs, or mixtures thereof with dihydroxy or dimercapto compounds, with alkali metal hydroxides and various amines. The oligomer mixtures may be converted to polycarbonates or their thiol analogs by a method which is particularly adaptable to integration with polycarbonate processing operations. Polymerization may be conducted simultaneously with molding, extrusion and the like. The oligomer mixtures are adaptable to the preparation of filled prepregs.

Abstract: A composition comprising a polycarbonate polydiorganosiloxane random block copolymer reinforced with an effective reinforcing amount of a polymeric aromatic amide in a physical form which achieves reinforcement.

Abstract: A method for producing a high molecular weight aromatic polycarbonate composite material which comprisesa. coating the reinforcing material with a catalyst system which polymerizes aromatic cyclic carbonate oligomers to high molecular weight aromatic polycarbonate under appropriate conditions;b. contacting the catalyst system coated reinforcing material with a mixture of aromatic cyclic carbonate oligomers and;c. polymerizing the mixture of aromatic cyclic carbonate oligomers to high molecular weight aromatic polycarbonate.

Abstract: A method for producing a high molecular weight aromatic polycarbonate composite material which comprisesa. coating the reinforcing material with a catalyst system which polymerizes aromatic cyclic carbonate oligomers to high molecular weight aromatic polycarbonate under appropriate conditions;b. contacting the catalyst system coated reinforcing material with a mixture of aromatic cyclic carbonate oligomers and;c. polymerizing the mixture of aromatic cyclic carbonate oligomers to high molecular weight aromatic polycarbonate.