Abstract: A thermoplastic composition suitable for making articles having low gloss and good impact properties is disclosed. The composition contains (A) 20 to 94.5 percent relative to the weight of the composition (pbw) of an aromatic (co)poly(ester)carbonate, (B) 5 to 40 pbw of a graft (co)polymer that includes an EPDM graft base and a grafted phase that is compatible with the aromatic (co)poly(ester)carbonate, and (C) 0.5 to 20 pbw of a linear copolymer containing at least one unit derived from a glycidyl ester monomer, and (D) 0 to 40 pbw of a vinyl copolymer. The gloss of the composition is lower than that of a corresponding composition that contains none of component (C).

Abstract: The present invention relates to flame-retardant polycarbonate compositions and methods for increasing the flame-retardancy of polycarbonate compositions. An ?,?-alkoxy phenyl phenyloligosiloxane compound and an alkali metal sulfonate salt are added to the polycarbonate compositions. The addition of the ?,?-alkoxy phenyl phenyloligosiloxane compound and the alkali metal sulfonate salt produces a polycarbonate composition having a flame-retardance rating of UL 94V-0 at 2 mm thickness or less.

Abstract: A flame-retardant thermoplastic molding composition is disclosed. The composition contains aromatic polycarbonate resin, about 0.01 to 0.15 wt.-% of a salt, wherein the salt is an alkali metal or alkaline earth metal salt of perfluoroalkane sulfonic acid, aromatic sulfimide, ar aromatic sulfonic add, and about 0.5 to 10 wt.-% of poly- and/or oligo-aryloxysiloxane (herein after referred as aryloxysiloxane) as flame-retardant synergist. The inventive composition is characterized in that its flammability rating is better than that of aromatic polycarbonate resin containing only inorganic salt of a derivative from aliphatic or aromatic sulfonic acid, sulphonamide or sulfonimide in accordance with UL-94 V standard, while mechanical and optical properties of the compositions are maintained.

Abstract: A method of making a polyether-polydialkylsiloxane block copolymer is provided. The method comprises providing a mixture comprising at least one alkylene oxide and at least one silanol-terminated polydialkylsiloxane; and polymerizing the mixture in the presence of a double metal cyanide complex catalyst, and optionally in the presence of an aprotic solvent and/or an antioxidant. A polyether-polydialkylsiloxane block copolymer having a molecular weight of 150-50,000 g/mole and having a polydispersity index of 1.0 to 1.5 made by the above method is also provided.

Abstract: A thermoplastic molding composition that releases upon burning a limited amount of smoke is disclosed. The composition includes 95 to 60 percent aromatic (co)polycarbonate, 5 to 40 percent bromine-substituted oligocarbonate, and 0.04 to 0.2 percent alkali or alkaline-earth salt of perfluoroalkane sulfonic acid, the percents all occurrences being relative to the weight of the composition.

Abstract: The present invention relates to a thermoplastic molding composition containing an aromatic polycarbonate, a polylactic acid and an impact modifying amount of a non-functionalized ethylene/(meth)acrylate copolymer. The inventive composition is characterized by its higher impact resistance, flexural and tensile properties than those of corresponding compositions where the copolymer is functionalized.

Abstract: A thermoplastic molding composition characterized in that its 60° gloss is lower than 40 is disclosed. The composition contains 10 to 94.5 pbw aromatic (co)polycarbonate, 4 to 40 pbw rubber graft (co)polymer containing EP(D)M or (co)polyacrylate as graft base and a grafted phase compatible with said aromatic (co)polycarbonate, and 0.05 to 10 pbw siloxane (co)polymer. The siloxane (co)polymer contains siloxane structural units that contain epoxy functionalities (SG) and optionally siloxane units that contain no epoxy functionalities (SNG) at a ratio of (SG) units to the total (SG)+(SNG) units greater than 0.05.

Abstract: A thermoplastic molding composition that releases upon burning a limited amount of smoke is disclosed. The composition includes 95 to 60 percent aromatic (co)polycarbonate, 5 to 40 percent bromine-substituted oligocarbonate, and 0.04 to 0.2 percent alkali or alkaline-earth salt of perfluoroalkane sulfonic acid, the percents all occurrences being relative to the weight of the composition.

Abstract: A thermoplastic composition suitable for making articles having low gloss and good impact properties is disclosed. The composition contains (A) 20 to 94.5 percent relative to the weight of the composition (pbw) of an aromatic (co)poly(ester)carbonate, (B) 5 to 40 pbw of a graft (co)polymer that includes an EPDM graft base and a grafted phase that is compatible with the aromatic (co)poly(ester)carbonate, and (C) 0.5 to 20 pbw of a linear copolymer containing at least one unit derived from a glycidyl ester monomer, and (D) 0 to 40 pbw of a vinyl copolymer. The gloss of the composition is lower than that of a corresponding composition that contains none of component (C).

Abstract: A method of making a polyether-polydialkylsiloxane block copolymer is provided. The method comprises providing a mixture comprising at least one alkylene oxide and at least one silanol-terminated polydialkylsiloxane; and polymerizing the mixture in the presence of a double metal cyanide complex catalyst, and optionally in the presence of an aprotic solvent and/or an antioxidant. A polyether-polydialkylsiloxane block copolymer having a molecular weight of 150-50,000 g/mole and having a polydispersity index of 1.0 to 1.5 made by the above method is also provided.

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 1/16? thick specimens.

Abstract: A thermoplastic molding composition that features improved low-temperature properties and is thus suitable for application in exterior automotive parts is disclosed. The composition contains (A) 80 to 60 percent of a copolycarbonate wherein 65 to 75 mole percent of its structural units are derived from compounds of formula (I) wherein R1, R2, R3 and R4 independently of one another represents H, C1-C4-alkyl, phenyl, substituted phenyl or halogen, and wherein 25 to 35 mole percent of its structural units are derived from compounds of formula (II) where R5, R6, R7 and R8 independently one of the others denote H, CH3, Cl or Br and X is C1-C5-alkylene, C2-C5-alkylidene, C5-C6-cycloalkylene, C5-C10-cycloalkylidene and (B) 20 to 40 percent of a homopolycarbonate of bisphenol A having a melt flow rate, determined in accordance with ASTM D-1238 under 1.2 kg loading at 300° C. of 3 to 12 gm/10 minutes.

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 that features improved low-temperature properties and is thus suitable for application in exterior automotive parts is disclosed.

Abstract: A flame retardant thermoplastic molding composition is disclosed. The composition contains polycarbonate resin and about 0.1-1.5 percent by weight of hydrotalcite.

Abstract: A thermoplastic molding composition comprising polycarbonate resin and additive, positive, amounts of stabilizer and salt is disclosed. The composition is characterized by its freedom from splay and by its improved flame retardance. The stabilizer of the invention is a physical mixture of poly(alkyl methacrylate) with fluorinated polyolefin, and the salt is an alkali metal or alkaline earth metal salt of perfluoroalkane sulfonic acid, aromatic sulfimide, or aromatic sulfonic acid.

Abstract: A thermoplastic polycarbonate molding composition resistant to ionizing radiation is disclosed. Accordingly, a composition containing a polycarbonate resin and an effective amount of an ester based on an aromatic carboxylic acid and at least one member selected from the group consisting of secondary alcohol, benzyl alcohol and tertiary alcohol was found to be resistant to the yellowing which characterizes polycarbonate compositions exposed to ionizing radiation.

Abstract: The invention is based on the surprising and unexpected finding that the impact performance of a thermoplastic composition containing aromatic polycarbonate resin and glass fibers is improved upon incorporation therewith of a particular silicone rubber powder. The silicone rubber powder, added at a level of about 0.5 to 4 percent, relative to the weight of the composition, is characterized in that it contains a mixture of (a) a polydiorganosiloxane and (b) silica, said glass fibers being of the type which do not, per se, adhere to the polycarbonate matrix in which they are incorporated.

Abstract: The impact strength of a thermoplastic molding composition containing aromatic polycarbonate resin is improved upon the incorporation therewith of a particular silicone rubber powder. The silicone rubber powder, added at a level of greater than 1 and less than 5 percent, contains a mixture of (a) a polydiorganosiloxane and (b) finely divided silica filler.

Abstract: A thermoplastic molding composition that releases upon burning a limited amount of smoke is disclosed. The composition includes 95 to 60 percent aromatic (co)polycarbonate, 5 to 40 percent bromine-substituted oligocarbonate, and 0.04 to 0.2 percent alkali or alkaline-earth salt of perfluoroalkane sulfonic acid, the percents all occurrences being relative to the weight of the composition.