Abstract: A process of the preparation of a flame-retardant thermoplastic molding composition is disclosed. The process entails adding an aqueous dispersion of PTFE into stationary polycarbonate resin in the form pellets and/or powder to obtain a material system, and blending the resulting material system, drying it and melt blending the dried mixture to obtain a molding composition. The composition exhibits good surface appearance, and high impact strength as well as stringent flammability rating even without the incorporation of additional flame retardant agent therewith.

Abstract: A process of the preparation of a flame-retardant thermoplastic molding composition is disclosed. The process entails adding an aqueous dispersion of PTFE into polycarbonate resin in the form pellets and/or powder to obtain a material system and melt blending the resulting material system optionally with additional polycarbonate to obtain a thermoplastic composition. The content of PTFE in the composition is that which is sufficient to render it good surface appearance, high impact strength, and stringent flame retardance without the incorporation of additional flame retardant agent therewith.

Abstract: A reinforced thermoplastic molding composition is disclosed. The composition contains polycarbonate resin, nanoclay in an amount of 0.1 to 20 percent relative to the weight of the polycarbonate and carboxylic acid in an amount of 1 to 20 percent relative to the weight of the nanoclay. The composition is characterized by its improved thermal stability and impact strength.

Abstract: A flame-retardant thermoplastic molding composition is disclosed. The composition contains aromatic polycarbonate resin and sufficient amounts of poly(tetrafluoroethylene) and sulfo-modified polyester, that are effective to impart to the composition flame resistance that in accordance with UL-94 standard is rated V-0 at {fraction (1/16)}? thick specimens.

Abstract: A flame-retardant thermoplastic molding composition is disclosed. The composition contains polycarbonate resin, about 0.1-1.5 percent by weight of an inorganic metal complex and an amount of a carboxylic acid sufficient to neutralize the hydrotalcite. The composition is characterized by its improved thermal stability.

Abstract: A thermoplastic molding composition is disclosed comprising a polydiorganosiloxane-polycarbonate block cocondensate and 0.5% to 15% by weight of a particular hydroxy benzotriazole. The composition is characterized by its improved protection against UV light.

Abstract: Polyester-carbonate/polysiloxane block copolymers containing the following recurring structural units: ##STR1## wherein the structural units (1) comprise at least 75 wt.% of the sum of the structural units (1) and (2), exhibit better low temperature tough fracture properties than the known polyester-carbonate/polysiloxane block copolymers containing comparable recurring structural units on comparison of polyester-carbonate/polysiloxane block copolymers of the same heat resistance.

Abstract: The present invention relates to thermoplastic moulding compositions comprising polydiorganosiloxanepolycarbonate block copolymers, copolymers of styrene and maleic anhydrides, graft polymers and, where appropriate, further customary additives and a process for preparing these moulding compositions.

Abstract: The present invention relates to thermoplastic moulding materials from polydiorganosiloxane-polycarbonate block copolymers and copolymers from styrenes and maleic anhydride and, if appropriate, further conventional additives, and also a process for the preparation of these moulding materials.

Abstract: The present invention relates to thermoplastic moulding compositions containing polydiorganosiloxane/polycarbonate block copolymers, elastomeric polymers and, if appropriate, polyalkylene terephthalates.

Abstract: The present invention relates toA. Thermoplastic moulding materials based on polydiorganosiloxane/polycarbonate block copolymers and ABS polymers andB. Thermoplastic moulding compositions based on polysiloxane/polycarbonate block copolymers, elastomeric polymers and, if appropriate, polyalkylene terephthalate.

Abstract: The present invention relates to thermoplastic moulding compositions comprising polydiorganosiloxane-polycarbonate block copolymers, copolymers of styrene and maleic anhydrides, graft polymers and, where appropriate, further customary additives and a process for preparing these moulding compositions.

Abstract: The present invention relates to thermoplastic moulding compositions containing (A) 20 to 80 parts by weight of a polydiorganosiloxane/polycarbonate block copolymer, (B) 70 to 5 parts by weight of a graft polymer in particle form and (C) 5 to 60 parts by weight of a rubber-free, thermoplastic vinyl polymer, the total of parts by weight of components (A)+(B)+(C) being in each case 100 parts by weight, and, if appropriate, other known additives.

Abstract: The present invention relates to the preparation of thermoplastic poly-(diorganosiloxane)/polycarbonate block copolymers containing monoalkylphenyl or dialkylphenyl end groups by the phase boundary process, and to the block copolymers which can be obtained by the process.

Abstract: Siloxane/polyester (carbonate) block copolymers comprising wholly aromatic polyester or polyestercarbonate units and from 0.5 to 7.5% by weight of polysiloxane blocks, exhibit an improved melt flowability without impairment of the heat stability.

Abstract: The present invention relates to thin-walled UV-stabilized polycarbonate mouldings, especially webbed laminate panels and films, made of polydiorganosiloxane/polycarbonate block copolymers.

Abstract: The subject of the present invention is a process for the preparation of polydiorganosiloxanes containing hydroxyaryloxy terminal groups by reacting polydiorganosiloxanes containing bis-acyloxy terminal groups with diphenols in a molar ratio of 1:2 to 1:20.

Abstract: The present invention relates toA. Thermoplastic moulding materials based on polydiorganosiloxane/polycarbonate block copolymers and ABS polymers andB. Thermoplastic moulding compositions based on polysiloxane/polycarbonate block copolymers, elastomeric polymers and, if appropriate, polyalkylene terephthalate.