General Electric Company

Richard C Bopp

Daniel L Roberts

Lynn M Martynowicz

Visvaldis Abolins

John B Yates

William J Ward, Iii

Richard B Allen

Kim G Balfour

Joseph C Golba, Jr

Eric M Lovgren

Samuel Noah Miller

Joel Matthew Caraher

Richard D Lassor

Lawrence P DeMejo

Scott A White

Barbara M Bacskai

There are disclosed polyphenylene ether resin-based compositions containing high molecular weight polyethylene resin and polyphenylene ether flame-retarded resins which have been rendered non-dripping through the inclusion of a drip-inhibiting amount of high molecular weight polyethylene resin. Still more particularly, there are disclosed flame retardant modified polyphenylene ether resins, such as those containing high impact polystyrene, rendered non-dripping through the inclusion of a drip-inhibiting amount of high molecular weight polyethylene resin which has a weight-average molecular weight (M.sub.w) of greater than about 100,000.

Polyphenylene ether resin-containing compositions containing high

A polymer composition comprises a melt compounded product of a polyphenylene oxide polymer and a recycled polystyrene material. The recycled polystyrene material exhibits a melt flow index greater than about 25 when devolatized by heating above its glass transition temperature. The polymer composition may be in various forms including extruded pellets, extruded foam, and expandable foam beads.

Polyphenylene oxide-recycled polystyrene composition and method

The odor of blends of polyphenylene ether resin, alone, or in combination with a polystyrene resin or a high impact polystyrene is improved by including a carboxylic acid, and acid anhydride or mixture thereof in the compositions.

Polyphenylene ether resins and compositions having reduced odor and

Flame resistant low density foam articles are provided. The foam article is preferably a foam board or a molded expandable foam bead comprised of a thermoplastic resin having adhered thereto a flame-resistance-conferring material serving as a surface flame-resistant barrier in the nature of a thermoplastic or thermosetting coating or laminate or in the nature of a foil, such as aluminum foil.

Flame retardant low density foam articles

A simple process for producing expandable thermoplastic resin particles is provided wherein a desired amount of a blowing agent is added to a particulate thermoplastic resin in a closed vessel and the mixture is allowed to age at ambient conditions for a sufficient period of time to allow the resin to become impregnated with the blowing agent.

Simple process for imbibing blowing agents in thermoplastic resin

Expandable thermoplastic resin microparticle compositions comprising low intrinsic viscosity polyphenylene ethers and a method for producing foam therefrom are disclosed.

Polyphenylene ether foams from low I.V. polyphenylene ether expandable

Polyphenlene ether foams from low I.V. polyphenylene ether expandable

A cycloaliphatic epoxy compound in combination with a 2-hydroxy-substituted benzophenone compound and a polyalkyl-substituted dipiperidine compound provides a UV stabilizer that exhibits synergistic behavior. The compounds can be formulated into a composition that is coated on, or impregnated into, the surface of a plastic article or, alternatively, they can be incorporated into a thermoplastic composition which can be thereafter molded into a shaped article. The stabilizer combination succeeds in upgrading the resistance of polyphenylene ether resins and blends against the photo-deteriorative effects of sunlight and bright indoor light, for example, fluorescent lighting.

UV light stabilizer composition comprising cyclic aliphatic epoxy UV

The odor of blends of polyphenylene ether resin, alone, or in combination with a polystyrene resin or a high impact polystyrene is improved by including a carboxylic acid, an acid anhydride or mixture thereof in the compositions.

Blends of a silicone-polycarbonate block copolymer with a compatibilized alloy of polyphenylene ether and polyester resins comprise a class of thermoplastic materials with physical properties ranging from those of a self-extinquishing, tough thermoplastic elastomer to a rigid engineering material. The compatibilizers include aromatic polycarbonates and rubber-modified impact modifiers.

Blends of a silicone-polycarbonate block copolymer with a compatibilized

A low density extruded structural foam of closed cell structure having good compressive strength comprising a engineered thermoplastic resin, alone, or containing a flame retarding agent and/or nucleating agent, optionally combined with a vinyl aromatic resin, and a blowing agent is produced by feeding said resin, or composition, into a primary extruder wherein mixing, adding a blowing agent which is essentially insoluble in the resin at room temperature but soluble in the melt and further mixing, then optionally passing the mixture to a second, cooling extruder, passing said extruded mixture through a die, then expanding and foaming said composition into a foam article.

Low density extruded foam having high compressive strength

UV light stabilizer composition comprising cyclic aliphatic epoxy, UV

The ultraviolet light stability of polyphenylene ether resins and blends is improved by the addition of small amounts of certain 2-hydroxy-4-hydroxylated alkyl ether benzophenones and hindered amines in combination. The benzophenones are specifically characterized by an alkoxy substituent which contains one or more pendent hydroxy groups. Comparison with the closest prior art shows better UV performance. Plasticized, flame retardant and filled versions are also disclosed.

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West Coxsackie, NY, United States of America

Richard C Bopp