General Electric Company

Alexandros Hasson

John B Yates

William Eugene Pecak

John P Banevicius

Sterling B Brown

Visvaldis Abolins

Ronald James Wroczynski

Joseph C Golba, Jr

Susan J Hathaway

John P Skilbeck

William M Bunting

Raymond J Gerhart

Jay K Gianchandai, Deceased

Improved thermoplastic compositions based on compatibilized blends of polyphenylene ether and polyamide are disclosed. These compositions contain radial block copolymers (such as those based on styrene/butadiene) having at least three polymer chains which often terminate with non-elastomeric segments.

Compositions which contain polyphenylene ether and polyamide resin

The present invention relates to a readily molded engineering plastic composition comprising: polyphenylene ether polymer; optionally a second polymer chosen from polyesters, polyamides and polycarbonates; and about 0.05 to about 5 weight percent hydrogenated poly (alpha-olefin) fluid.

Polyphenylene ether alloys

The present invention relates to a readily molded engineering plastic composition comprising:

Improved thermoplastic compositions are disclosed, comprising a polyphenylene ether resin capped with an epoxytriazine compound; a thermoplastic polyester; and a radial block copolymer which itself comprises at least about 60% by weight of a polymerized vinyl aromatic material, and about 5%-40% of a polymerized conjugated diene monomer.

Thermoplastic resin compositions containing polyphenylene ethers and

Improved thermoplastic compositions are disclosed, comprising a polyethylene ether resin capped with an epoxytriazine compound; a thermoplastic polyester; and a radial block copolymer which itself comprises at least about 60% by weight of a polymerized vinyl aromatic material, and about 5%-40% of a polymerized conjugated diene monomer.

Volatile substances in polyphenylene ether or polyphenylene ether/polystyrene compositions are substantially reduced by extruding the resins in a single pass using a plurality of stages comprising water injection and vacuum venting.

Method for removing volatile substances from polyphenylene ether or

A method for removing volatile substances from polyphenylene ether (PPE) resin blends in an extruder comprising adding a second thermoplastic resin downstream from the PPE feedport and one stage of water injection followed by vacuum venting is disclosed.

Method for removing volatile substances from polyphenylene ether resin

Low odor polyphenylene ether/polystyrene resins are produced in a process by solution blending low odor polyphenylene ether and polystyrene resins and passing the solution through devolatilizers prior to recovery.

Low odor polyphenylene ether/polystyrene process

Volatile substances in polyphenylene ether or polyphenylene ether/polystyrene compositions are substantially reduced by extruding the resins in a single pass using a plurality of stages including water injection and vacuum venting.

Polyphenylene ether/rubber modified polystyrene compositions are uniquely suitable for flow molding large, e.g., 10 pounds or more, parts when the rubber modified polystyrene contains at least 12 percent by weight of particulate rubber, the rubber particles have an average diameter of greater than about 3 microns, and the compositions have an R* value of greater than about 16. R* is the ratio of the low shear rate viscosity to the high shear rate viscosity at the optimum processing temperature.

Polyphenylene ether/rubber modified polystyrene composition suitable for

Polymer compositions comprising polyphenylene ethers free from polystyrenes are extruded with vacuum venting at 300.degree. C. or above in the presence of water. This extrusion operation reduces the content of volatile impurities, including those with an undesirable odor.

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Delmar, NY, United States of America

Alexandros Hasson