General Electric Company

General Electric Corporation Gmbh

Glenn D Cooper

Arthur Katchman

James G Bennett

Visvaldis Abolins

Daniel Edwin Floryan

Gim F Lee

William R Haaf

James G Bennett, Jr

Irwin Schraga

Rainey A Shufelt

Robert J Axelrod

Howard A Vaughn, Jr

James W Watson, Jr

Charles P Shank

A method for increasing the heat distortion temperature of certain blends of polyphenylene ether resin and styrene polymers is described in which an admixture is formed of a polyphenylene ether resin and a flame retardant copolymer of styrene and up to 50 percent dibromostyrene. The resulting compositions can be formulated to include one or more additional ingredients and are moldable into articles characterized by good flame retardancy and light stability, as well as a higher heat distortion temperature compared with articles formed from corresponding blends using homopolystyrene or styrene-bromostyrene copolymer.

Flame retardant polyphenylene ether-polystyrene blends of increased heat

There are provided thermoplastic compositions comprising a polyphenylene ether and a rubber modified polystyrene resin having a discontinuous phase comprised largely of particles consisting of a core of polystyrene in a shell of a diene rubber membrane, said particles constituting at least 30 percent of the total volume of the rubber-modified polystyrene. Such compositions provide molded articles with substantial and unexpected properties in impact resistance, transparency and surface gloss, particularly at low mold temperatures, in comparison with known compositions of rubber modified polystyrene alone or those of other polystyrenes combined with polyphenylene ethers.

Composition of polyphenylene ethers with core-shell rubber-modified

Homogeneous blends of polyphenylene ether resin and copolymers of styrene and 4-tert-butylstyrene are described. Rubber modifiers can be included in the copolymer or the blend. The blends are moldable into highly ductile articles having higher heat distortion temperature.

Blends of polyphenylene ether resins and styrene-tert-butylstryene

Novel molding compositions are disclosed which comprise a polyphenylene ether resin, an alkenyl aromatic resin and EPDM rubber.

Polyphenylene ether molding compositions that include an alkenyl

An improved polyphenylene ether composition and process for production are disclosed. Benzoic anhydride is reacted with polyphenylene ether polymer, preferably under conditions of extrusion, to produce a composition having improved color and/or color stability.

Polyphenylene ether composition and process for production

Blends of polyphenylene ether resins and styrene-tert-butylstyrene

A thermoplastic composition having an improved impact modifier is described. In an admixture of polyphenylene ether and butadiene-modified alkenyl aromatic resin, a resin which is a network polymer combining poly-alkenyl aromatic and polybutadiene membrane is employed. On subjection to high shear, the continuous membrane phase is shredded into discrete segments which impart an increased impact strength to the composition.

Thermoplastic composition having improved impact modifier and process

This invention provides novel thermoplastic molding compositions of a polyphenylene ether resin, an EPR rubber, a triaryl phosphate or an EPDM modified alkenyl aromatic resin or a combination of a triaryl phosphite and an EPDM modified alkenyl aromatic resin.

Novel compositions are provided which include a polyphenylene ether resin and EPDM-rubber polystyrene modified or polymerized with silicone oil which is free from unsaturated hydrocarbon groups. Included within the disclosure are methods of preparing and molding such compositions and the molded products obtained therefrom. The compositions provide molded products with substantially better room temperature properties, such as Izod impact and Gardner impact strengths, and surface appearance (gloss), than blends of polyphenylene ether with EPDM-polystyrene with no modifier or modified with an aliphatic mineral oil. Both Izod and Gardner impact strengths at low temperatures are also improved. Also included within the scope of the invention are reinforced and flame-retardant compositions of said polyphenylene ether resin and said EPDM-polystyrene polymerized with silicone oil.

Composition of polyphenylene ether resins and EPDM-polystyrenes modified

There are provided novel compositions comprising blends of polyphenylene oxides with EPDM-silicone rubber, and optionally a polystyrene resin. The compositions when molded exhibit improved ductility and impact strength. Included within the disclosure are methods of preparing and molding the novel compositions and the molded products obtained therefrom.

Compositions of polyphenylene oxides with EPDM-silicone rubber

Novel thermoplastic molding compositions are described which are based on the combination of a polyphenylene ether resin and an alkenyl aromatic resin that is modified by rubber particles in the form of bundles of rubber fibers or rubber sheets.

Compositions of a polyphenylene ether resin and an aromatic alkenyl

An improved method is provided for the recovery of a friable crumb-form of resinous compositions comprising polyphenylene ethers. The method comprises polymerization of a monohydric phenol, removal of the catalyst employed, heating, I.V. stabilization, optionally, capping, and product recovery.

Process for isolation of polyphenylene ether resin by crumbing in hot

Novel compositions are disclosed which include a polyphenylene ether resin and an alkenyl aromatic resin modified with a polysiloxane in the form of small rubber-like particles. Also included within the scope of this invention are reinforced and flame-retardant compositions of the polyphenylene ether resin and the alkenyl aromatic resin modified with a polysiloxane.

Polyphenylene ether resin compositions containing polysiloxane-modified

Novel compositions are disclosed which comprise a polyphenylene ether resin, a plasticizer, and a poly(alkylene oxide). Also disclosed are compositions comprised of a polyphenylene ether resin, a rubber-modified alkenyl aromatic resin, and a poly(alkylene oxide) as well as compositions comprised of a polyphenylene ether resin and an alkenyl aromatic resin modified with a poly(alkylene oxide). Included within the scope of this invention are corresponding reinforced and flame-retardant compositions.

Growing community of inventors

Delmar, NY, United States of America

Glenn D Cooper