Covestro LLC

Bayer Materialscience, LLC

Thermal Solution Resources, LLC

Xiangyang Li

James P Mason

Pierre Moulinie

Marina Rogunova

Rudiger Gorny

Mikhail Sagal

Marty Boykin

Pierre R Moulinie

The present invention provides a composition comprising a polycarbonate, an infrared (IR) reflective additive and an epoxy-functional silicone, wherein the composition exhibits a reduced melt flow change over a comparable compound not containing an epoxy-functional silicone.

Compositions containing polycarbonate and infrared reflective additives

The present invention provides a flame-retardant thermoplastic molding composition made from an aromatic polycarbonate, an impact modifier, a bisphenol-A oligophosphate and glass fibers, wherein the ratio of polycarbonate to bisphenol-A oligophosphate is less than about 7.5, wherein the ratio of glass fibers to bisphenol-A oligophosphate is less than about 2.5, wherein the composition is rated V0 at 1.5 mm according to UL-94, and wherein the composition is free from halogenated flame retardants.

Halogen free flame retarded polycarbonate

A hydrolytic stabilizer mixture is disclosed. The mixture comprise i) at least one carbodiimide and ii) co-stabilizer selected from the group consisting of aluminum oxide and aluminum oxyhydroxide. The mixture is useful in imparting to polymeric systems improved resistance to hydrolysis.

Hydrolysis stabilizer for thermoplastic molding compositions

The present invention provides a thermoplastic molding composition comprising A) 60 to 99 percent by weight (pbw) aromatic poly(ester) carbonate having a weight-average molecular weight of at least 25,000, B) 1 to 20 parts per 100 parts resin (phr) graft (co)polymer having a core-shell morphology, comprising a grafted shell that contains polymerized alkyl(meth)acrylate and a composite rubber core that contains interpenetrated and inseparable polyorganosiloxane and poly(meth)alkyl acrylate where the weight ratio of polyorganosiloxane/poly(meth)alkylacrylate/grafted shell is 70-90/5-15/5-15, C) 2 to 20 phr phosphorus-containing compound, and D) 0.1 to 15 phr boron compound having average particle diameter of 2 to 10 microns.

Flame retardant polycarbonate

The present invention provides a polycarbonate composition containing hydroxy aluminum hydroxide which exhibits increased gloss level. This effect is seen in polycarbonate blend or blends of polycarbonate and polyesters. This additive is effective in increasing the gloss level of polymer or polymer blend with gloss levels lower than 80 at 20 degree incident angle.

Polymers and polymer blends with enhanced gloss level

The present invention provides a transparent thermoplastic molding composition made from a transparent blend of a polycarbonate resin with a polyester resin, 0.005 to 2 weight percent, based on the weight of the composition, of a perfluoroalkylsulfonic acid salt of the formula (I): (RA&#x2014;SO)X(I), wherein R denotes perfluorinated linear or branched carbon chain having 1 to 30 carbon atoms, A denotes a direct bond or an aromatic nucleus, n denotes an integer of 1 or 2, and X denotes a metal element selected from the first or the second column in the Periodic Table of the Elements, and 0 to 5 weight percent, based on the weight of the composition, of a glycerol monostearate. The inventive composition has a total transmittance according to ASTM D-1003 of greater than 84% and an electric resistivity according to ASTM D-257 of less than about 2.5E+06 ohm-m.

Transparent thermoplastic composition with improved electrical conductivity in the melt

A thermoplastic molding composition characterized by its flame retardance and impact strength is disclosed. The composition contains A) 70 to 99 parts by weight of aromatic poly(ester) carbonate B) 1 to 30 parts by weight of polyalkylene terephthalate, the total weight of A) and B) being 100 parts resin, and C) 1 to 20 parts per hundred parts resin (phr) of graft (co)polymer having a core-shell morphology, including a grafted shell that contains polymerized alkyl(meth)acrylate and a composite rubber core that contains interpenetrated and inseparable polyorganosiloxane and poly(meth)alkyl acrylate components, D) 2 to 20 phr of a phosphorous-containing compound, and E) 0.1 to 2 part by weight of fluorinated polyolefin.

Impact resistant, flame retardant thermoplastic molding composition

A thermoplastic composition suitable for making articles having low gloss and good impact resistance at low temperatures is disclosed. The composition contains (A) 10 to 90 percent relative to the weight of the composition (pbw) of an aromatic (co)poly(ester)carbonate, (B) 10 to 90 pbw of first graft (co)polymer containing a graft base selected from the group consisting of polyurethane, ethylene vinyl acetate, silicone, ethylene-propylene diene rubbers, ethylene propylene rubbers, acrylate rubbers, diene rubbers, and polychloroprene, and a grafted phase, (C) 1 to 20 pbw of a linear glycidyl ester functional polymer comprising repeating units derived from one or more glycidyl ester monomers and (D) 1 to 20 pbw of a second graft (co)polymer containing a core and shell wherein the core contains an interpenetrated network of poly(meth)alkyl acrylate and polyorganosiloxane, and wherein the shell contains poly(meth)acrylate.

Thermoplastic composition having low gloss and low temperature impact performance

A thermoplastic molding composition characterized by its flame retardance is disclosed. The composition contains A) aromatic poly(ester) carbonate having a weight-average molecular weight of at least 25,000, B) (co)polyester and C) graft (co)polymer having a core-shell morphology, comprising a grafted shell that contains polymerized alkyl(meth)acrylate and a composite rubber core that contains interpenetrated and inseparable polyorganosiloxane and poly(meth)alkyl acrylate where the weight ratio of polyorganosiloxane/poly(meth)alkylacrylate/grafted shell is 70-90/5-15/5-15, D) phosphorus-containing compound, E) fluorinated polyolefin and F) boron compound having average particle diameter of 2 to 10 microns.

Flame retardant thermoplastic molding composition

A thermoplastic molding composition characterized in improved impact performance and flame resistance is disclosed. The composition contains (a) aromatic polycarbonate, (b) thermoplastic polyester and (c) halogenated acrylate containing repeat structural units conforming to wherein R, R, R, R, and Rindependently one of the others denote hydrogen an alkyl or aryl group, n is 0 to 5, m is 10 to 10000, and R denotes halogen,

Flame retardant, impact resistant thermoplastic molding composition

A thermoplastic molding composition containing polycarbonate, polyalkylene terephthalate and an elastomeric impact modifier is disclosed. The impact modifier that exhibits pH value of less than 7 and contains less than 500 ppm of sodium ions, is characterized in its core/shell morphology, where the core contains polymerized butadiene structural units and shell contains polymerized methacrylate structural units. The core is present in an amount of 40 to 70 percent relative to the weight of the impact modifier, and the glass transition temperature of the shell is greater than 23&#xb0; C. The composition is characterized in its improved surface quality and toughness at low temperatures.

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Seven Fields, PA, United States of America

Xiangyang Li