General Electric Company

Omar M Boutni

Ping Y Liu

John A Tyrell

Luca P Fontana

Charles F Pratt

Dwight J Patterson

Kenneth F Miller

Linda H Nelson

Wie-Hin Pan

Edward L Belfoure

Gary L Freimiller

Sarah E Morgan

Toshio Ishihara

Herman B Savenije

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.

Flame retardant low Tg polyestercarbonate

Copolyestercarbonate and polycarbonate

Novel compositions with high impact strength in both thin and thick-walled sections, and good weld line strength at room temperatures are provided in the form of resinous mixtures comprising:

Polycarbonate resin mixtures

A four-component blend of an aromatic carbonate polymer, a styrene-acrylonitrile copolymer, a methacrylate-diene-styrene shell-core copolymer and polybutylene terephthalate exhibits good shear thinning characteristics and weldline strength, as well as other favorable mechanical properties.

Engineering thermoplastic with improved processability and performance

Impact and solvent resistant polycarbonate composition

Composition

Polycarbonate blends with a VO rating by underwriters laboratory Bulletin 94 (UL-94), together with good strength and processing characteristics are obtained by blending an aromatic carbonate polymer, an ABS copolymer, a tetrabromobisphenol A polycarbonate and a flame retardant sulfonate salt.

Flame retardant carbonate polymer blends

A low gloss thermoplastic blend is produced by blending an aromatic polycarbonate with a very high rubber ABS made by emulsion polymerization.

Low-gloss aromatic carbonate polymer blend

A low gloss thermoplastic with good physical properties comprises a blend of a polycarbonate with ABS and a gloss-reducing amount of a glycidyl methacrylate copolymer.

Low gloss thermoplastic blends

Blends of aromatic carbonate polymers with glycidyl methacrylate grafts on ethylene-propylene-diene modified elastomer (EPDM) further modified by reaction with an epoxy acrylate have low glass as well as improved impact strength and strong weldlines.

Low gloss polycarbonate blend

An aromatic carbonate resin composition exhibiting improved impact properties comprised of:

Aromatic carbonate resin exhibiting improved impact properties

A low-gloss thermoplastic blend contains an aromatic carbonate polymer, strength-improving additivies such as an elastomeric block copolymer and a core-shell acrylic polymer, and a gloss-reducing glycidyl (meth)acrylate polymer.

Low-gloss carbonate polymer blends

An aromatic carbonate resin composition comprising:

Thermoplastic molding compositions exhibiting improved melt flow

A composition comprising an aromatic polycarbonate having a number average molecular weight of from about 6,000 to about 12,000 in admixture with

Low gloss, flame retardant polycarbonate compositions

A process which comprises mixing a melt of an amorphous aromatic polyester with a melt of a carboxy terminated polyacrylate oligomer, said oligomer having a number average molecular weight of from about 500 to about 10,000.

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Mt. Vernon, IN, United States of America

Omar M Boutni