General Electric Company

Other

Gim F Lee

Visvaldis Abolins

Fred F Holub

William R Haaf

Glenn D Cooper

John B Yates

Arthur Katchman

John C Goossens

Joseph E Betts

Sterling B Brown

Kevin M Snow

Dennis J McFay

Robert A Williams

James G Bennett

Rainey A Shufelt

Sai P Ting

Gary Charles Davis

Roelof F Van Der Meer

Walter Karl Olander

Jean M Heuschen

Glenn D Cooper, Deceased

James W Watson, Jr

John D Eliassen

Ernesto E Sebok

Sei P Ting

There are provided flame retardant, flexibilized thermoplastic compositions which comprise, in admixture, a normally flammable polyphenylene ether resin, an aromatic phosphate plasticizer in an amount at least sufficient to provide a flame retardant, flexibilized composition after molding, and a thermoplastic elastomer comprising a block copolymer of a vinyl aromatic compound and a diene monomer. Preferred features comprise such compositions which also include a halogenated hydrocarbon, alumina trihydrate and/or elemental red phosphorus.

Flame retardant flexibilized polyphenylene ether compositions

A thermoplastic resin composition having in admixture a polyphenylene ether resin and an elastomeric block copolymer wherein the block copolymer has in admixture a triblock copolymer A-B-A' and a diblock copolymer A-B with A and A' being polymerized vinyl aromatic hydrocarbon blocks such as styrene and B being an ethylene-alkylene block such as ethylene-butylene. The composition of this invention can also include other additives such as siloxane fluids, flame retardants, polyolefins, and phosphates, as well as fillers, etc. Also included in this invention is the process of preparing such compositions and articles of manufacture prepared therefrom, such as electrical conductor articles or formed articles. The compositions of this invention provide improved flexibility and elongation.

Thermoplastic compositions containing polyphenylene ether resin and

Improved thermoplastic compositions characterized by high tensile elongation values are described. They comprise polyphenylene ether resin, a hydrogenated elastomeric block copolymer having an A-B-A' structure, with specific molecular weight values for the copolymer blocks and a phenylsiloxane fluid of particular composition. Electrical conductor articles which include polymerized thermoplastic compositions as mentioned above represent another embodiment of this invention.

Electrically conductive article made of polyphenylene ether electrical

Thermoplastic compositions comprised of compatible combinations of a polyphenylene ether resin and a polyamide resin and which require improved low temperature ductility can be impact modified with a modifying agent comprising a partially hydrogenated diblock copolymer of styrene and ethylene/propylene.

Impact modified polyphenylene ether-polyamide compositions

Polyphenylene ether electrical insulation compositions

Polyphenylene ether resin/polypropylene resin compositions are disclosed which have improved heat deflection temperature and stiffness. The improvements result from the use of a polyphenylene ether resin having an intrinsic viscosity of below about 0.30 dl./gm. The compositions may further comprise an impact modifier.

Polyphenylene ether/polypropylene compositions

Improved flame retardance and smoke/heat reduction has been imparted to polyphenylene ethers by blending the polyphenylene ethers with organopolysiloxane fluids having a critical mole % range of chemically combined phenylsiloxane units.

Method for enhancing the flame retardance of polyphenylene ethers

Compositions of a polyphenylene ether, a polyolefin, and a certain copolymers of a vinyl aromatic compound conjugated with an alkene such as styrene-ethylene butylene-styrene triblock elastomers exhibit improved ductility and decreased delamination tendencies compared to prior art compositions.

Polyphenylene ether/polyolefin compositions

An improved polyphenylene ether composition is described herein, comprising at least two polyphenylene ether resins, one having an intrinsic viscosity of at least about 0.38 dl/g, and another having an intrinsic viscosity of no greater than about 0.33 dl/g.

Polyphenylene ether composition characterized by improved melt flow

Impact- and solvent-resistant resin blends are prepared from a polyphenylene ether or blend thereof with a polystyrene, a linear polyester such as a poly(alkylene dicarboxylate), at least one polymer containing a substantial proportion of aromatic polycarbonate units as a compatibilizing agent, and, preferably, at least one elastomeric polyphenylene ether-compatible impact modifier. There may also be present a minor amount of at least one epoxide and/or masked isocyanate such as triglycidyl isocyanurate or a glycidyl methacrylate polymer. The polyphenylene ether preferably has a low proportion of unneutralized amino nitrogen, if any.

Solvent-resistant, compatible blends of polyphenylene ethers and linear

Solvent-resistant resin blends with a wide variety of desirable impact and tensile properties are prepared from a polyphenylene ether having a low proportion of unneutralized amino nitrogen or a blend thereof with a polystyrene; a poly(ethylene terephthalate), poly(butylene terephthalate), elastomeric polyester or mixture thereof; at least one elastomeric polyphenylene ether-compatible impact modifier and at least one polymer containing a substantial proportion of aromatic polycarbonate units as a compatibilizing agent. There may also be present a minor amount of at least one epoxide such as triglycidyl isocyanurate.

Solvent-resistant, compatible blends of polyphenylene ethers and

Flame retardant mixtures of a polyphenylene ether resin, an alkenyl aromatic elastomer, an organic phosphate flame retardant agent and a crosslinking agent are described. They are curable by heating or by exposure to high energy radiation. Articles such as electrical wires and cables comprising insulation made of the composition, and a method of their production, are also disclosed.

Crosslinkable flame retardant composition of polyphenylene ether and

Thermoplastic blends having excellent chemical resistance and improved impact strength are prepared from a polyphenylene ether, a linear polyester such as poly(alkylene dicarboxylate), a polymer containing a substantial proportion or aromatic polycarbonate units, and property improving amounts of an alkylene acrylate copolymer.

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Albany, NY, United States of America

Gim F Lee