Abstract: The invention relates to thermoplastic polycarbonate molding compositions comprising a polycarbonate resin and a stabilizing agent conforming to ##STR1## where R.sub.1 and R.sub.2 independently are ##STR2## R.sub.3 is a hydrogen atom, a branched or linear C.sub.1 -C.sub.20 alkyl or a C.sub.1 -C.sub.20 cycloalkyl, and R.sub.5 and R.sub.6 independently are a hydrogen atom or a C.sub.1 -C.sub.3 alkyl, x is an integer of about 1 to 70,y is an integer of about 0 to 70,R.sub.4 is C.sub.2 -C.sub.6 alkyl or cycloalkyl, C.sub.6 -C.sub.10 aryl or C.sub.7 -C.sub.20 alkylaryl or cycloalkylaryl. The agent is homogenically distributed throughout the resin and is present in an amount sufficient to improve the gamma radiation resistance of the composition.

Abstract: A thermoplastic compositions comprising an aromatic polycarbonate resin and a copolymer of C.sub.1 -C.sub.18 alkyl acrylate with a hydroxy C.sub.1 -C.sub.18 alkylacrylate is characterized by its improved notched Izod impact strength and critical thickness.

Abstract: The invention relates to a thermoplastic molding composition comprising a blend of a thermoplastic polyester and a reinforcing amount of a reinforcing agent. An improvement in the impact performance of the composition is disclosed to result upon the incorporation therewith of a blocked (end-capped) polyisocyanate prepolymer.

Abstract: It is an object of the invention to provide a polycarbonate composition having improved mechanical properties and a process for the preparation of said composition. These objects are achieved in accordance with the present invention which teaches a blend of a polycarbonate resin and an additive amount of an aromatic bis-imide compound. The composition comprising said blend retains a surprising degree of ductility as measured by tensile elongation and yield strength and exhibits an improvement in both tensile strength and flexural modulus.

Abstract: The present invention is directed to derivatives of azoles, their preparation and their use as chemical blowing agents for thermoplastic molding compositions. The agents of the invention are characterized in their improved compatibility with the resin wherein they are incorporated.

Abstract: The present invention is directed to a thermoplastic molding composition comprising a blend of a thermoplastic aromatic polycarbonate resin, a graft elastomer, a polyanhydride and glass fibers, said composition is characterized by its improved impact performance.

Abstract: The present invention is directed to a polycarbonate composition comprising finely divided silica which composition is characterized by low gloss.

Abstract: A glass fiber reinforced polycarbonate composition having an improved level of impact strength and decreased notch sensitivity, comprising an aromatic polycarbonate, glass fibers and a polyanhydride resin which is a copolymer of .alpha.-olefin and maleic anhydride is provided.

Abstract: A thermoplastic aromatic polycarbonate composition is provided comprising polycarbonate resin and an additive amount of a linear copolymer of a maleic acid anhydride or its imidized derivative and an .alpha.-olefin.

Abstract: A mineral-filled thermoplastic composition comprising polycarbonate, poly(alkylene) terephthalate and polyanhydride resin characterized in an improved impact is disclosed.

Abstract: A flame retardant polycarbonate composition is comprised of a polycarbonate resin, perfluoroalkane sulfonate salt and a halogenated aromatic anhydride.

Abstract: The present invention is concerned with flame retardant polycarbonate compositions having good mechanical properties and melt stability. These properties are achieved by adding small amounts of a fibril forming polytetrafluoroethylene, and an alkali metal salt of an inorganic acid, and a small amount of aromatically bound chlorine or bromine contained in a compound other than an organic alkali metal or alkaline earth metal salt to a thermoplastic aromatic polycarbonate.