Abstract: Thermoplastic molding compositions are disclosed which comprise an intimate admixture of (a) a copolymer of a vinyl aromatic compound and an .alpha.,.beta.-unsaturated cyclic anhydride, including rubber-modified copolymers thereof, and (b) impact modifiers comprising graft copolymers, copolyesters, and rubber-modified homopolymers. Optionally, the compositions can also include a polyphenylene ether resin and further, optionally, a normally liquid polybutadiene oligomer. Mixing (a) with a polyphenylene ether leads to a compatible composition, markedly improved in heat deflection temperature.

Abstract: Improved polyphenylene ether compositions are described. These compositions contain an amount of talc filler effective to provide an UL arc tracking rate of less than 1 inch/minute. Improvement in the impact strength and other physical properties of these compositions may be obtained through incorporation of low molecular weight terblock copolymer having polystyrene endblocks and a rubber midblock.

Abstract: Compositions comprising a polyphenylene ether resin, an impact modifier such as an A-B-A.sup.1 block copolymer, a plasticizer and particulate titanium dioxide in which the particles have a mean particle size no greater than 0.6 micron, provide unexpected retention of Gardner impact resistance.

Abstract: Compositions comprising polyphenylene ether, an impact modifier such as an A-B-A.sup.1 block copolymer, a plasticizer and a particular clay filler in which the particles have a mean particle size of no greater than 0.6 micron, preferably between 0.1 and 0.6 micron, and a surface area of at least 15 m.sup.2 /g. The clay should be essentially free of large particles commonly known as "grit", and should also be substantially non-agglomerated or clump-free. The compositions when molded possess unexpectedly high Gardner impact resistance.

Abstract: Novel thermoplastic molding compositions are disclosed which comprise a copolymer of a vinyl aromatic compound with an .alpha.,.beta.-unsaturated cyclic anhydride and a hydrogenated A-B-A block copolymer or a block copolymer of the A'-B'-A' type or an acrylic graft polymerization copolymer with or without a polyphenylene ether resin.

Abstract: Novel thermoplastic molding compositions are disclosed which comprise a copolymer of a vinyl aromatic compound with an .alpha.,.beta.-unsaturated cyclic anhydride and a hydrogenated A-B-A block copolymer or a block copolymer of the A'-B'-A' type or an acrylic graft polymerization copolymer with or without a polyphenylene ether resin.

Abstract: Filamentous glass in which the filaments are sized with non-burning or self-extinguishing polymeric compositions reinforce the physical properties of organic polymeric substances and impart a degree of flame retardance to glass-resin composites greater than that expected from the sizing content. There are provided molding compositions and injection molding granules containing resins and dispersions of such reinforcements and non-burning or self-extinguishing three-dimensional articles comprising resins containing such reinforcements.

Abstract: Thermoplastic molding compositions are disclosed which comprise an intimate admixture of (a) a copolymer of a vinyl aromatic compound and an .alpha., .beta.-unsaturated cyclic anhydride, including rubber-modified copolymers thereof, and (b) impact modifiers comprising graft copolymers, copolyesters, and rubber-modified homopolymers. Optionally, the compositions can also include a polyphenylene ether resin and further, optionally, a normally liquid polybutadiene oligomer. Mixing (a) with a polyphenylene ether leads to a compatible composition, markedly improved in heat deflection temperature.

Abstract: The heat retardant properties of compositions comprising polyphenylene ether resins and styrene resins are significantly improved while maintaining a good overall balance of physical properties by including therein a combination of a flame retarding organophosphorus compound and a finely particulate solid material of a porous character.

Abstract: Ultraviolet light stable polyphenylene ether compositions are provided by this invention. These compositions include as the stabilizer system, a minor amount of a combination of an ultraviolet light absorber selected from the group consisting of hydroxybenzotriazoles, hydroxybenzophenones and substituted derivatives thereof with an organic nickel compound.

Abstract: Novel compositions are disclosed which include a plyphenylene ether resin, an alkenyl aromatic resin modified with a rubber, and a hindered tris-phenol as a stabilizer. Also included within the scope of this invention are reinforced and flame-retardant compositions of the polyphenylene ether resin, the alkenyl aromatic resin modified with a rubber, and the hindered tris-phenol.

Abstract: Polyphenylene ether compositions are disclosed which comprise a polyphenylene ether resin and a copolymer of a vinyl aromatic compound and an .alpha., .beta.-unsaturated cyclic anhydride.

Abstract: Novel thermoplastic molding compositions are disclosed which comprise a copolymer of a vinyl aromatic compound with an .alpha.,.beta.-unsaturated cyclic anhydride and a hydrogenated A-B-A block copolymer or a block copolymer of the A'-B'-A' type or an acrylic graft polymerization copolymer with or without a polyphenylene ether resin.

Abstract: Thermoplastic compositions comprising a polyphenylene ether resin alone or in admixture with a styrene resin are rendered resistant to the accumulation of surface electrostatic charges by the inclusion, in a minor, effective amount, of an antistatic agent consisting of a mixture of triethanolamine, toluene sulfonic acid and sodium lauryl sulfate. Flame retardant embodiments are also provided.

Abstract: Intercrystalline normally rigid thermoplastic compositions comprising a combination of (a) very rapidly crystallizable polyester, (b) a crystalline or amorphous polymer and (c) a reinforcing filler for the combination. There are also provided such compositions including flame retardant agents.

Abstract: Novel flame retardant polyphenylene ether resin compositions are disclosed which include, as a combination of flame retardants, a halogenated flame retardant and an organic iron compound wherein the organic group is derived from a compound of the formula: ##STR1## WHEREIN R.sub.1 is selected from the group consisting of hydrogen, hydroxyl and lower alkylene carboxy wherein the alkylene moiety has from 1-4 carbon atoms; R.sub.2 is selected from the group consisting of hydrogen, hydroxyl and lower alkyl of 1-4 carbon atoms; R.sub.3 is selected from the group consisting of hydrogen, lower alkyl of 1-4 carbon atoms, hydroxyl, lower alkylene carboxy, aryl, aralkyl, alkaryl, lower alkylidene carboxy wherein the alkylidene moiety has from 1-4 carbon atoms and n is a whole number of from 1 to 20 with the proviso that no compound has more than six hydroxy groups.

Abstract: Novel thermoplastic compositions are disclosed which include a polyphenylene ether resin, an alkenyl aromatic resin modified with an EPDM rubber and an emulsion graft copolymer of an alkenyl aromatic resin and a rubbery interpolymer of a mixture of monoolefins and a polyene; or a graft polymerization product of an acrylic monomer alone or in admixture with styrene and a rubber diene polymer or styrenediene copolymer. Also included with the scope of this invention are reinforced and flame-retardant compositions of said thermoplastic materials.

Abstract: Intercrystalline normally rigid thermoplastic compositions comprising a combination of (a) very rapidly crystallizable polyester, (b) a crystalline or amorphous polymer and (c) a reinforcing filler for the combination. There are also provided such compositions including flame retardant agents.

Abstract: There are provided compositions comprising a polyphenylene ether and an acrylic resin in combination with a diene rubber-containing resin, the compositions optionally containing a styrene resin. Illustratively, the addition of an acrylic resin modified butadiene rubber-acrylonitrile-styrene resin to polyphenylene ethers or mixtures of polyphenylene ethers and polystyrenes provides unexpected improvements in toughness in parts molded from the compositions, and in their resistance to gasoline. Such properties are improved without substantially impairing gloss or surface appearance.

Abstract: Novel thermoplastic compositions are disclosed which include a polyphenylene ether resin, an alkenyl aromatic resin modified with an EPDM rubber and an emulsion graft copolymer of an alkenyl aromatic resin and a rubbery interpolymer of a mixture of monoolefins and a polyene; or a graft polymerization product of an acrylic monomer alone or in admixture with styrene and a rubbery diene polymer or styrenediene copolymer. Also included with the scope of this invention are reinforced and flame-retardant compositions of said thermoplastic materials.