Abstract: Improved thermoplastic compositions that are resistant to die beard growth are described herein, comprising poly(phenylene ether) resins, polyamide resins and an amount of a beard growth reducing agent selected from the group consisting of non-elastomeric polyolefin resins, partially fluorinated polyolefins, and mixtures of non-elastomeric polyolefin resins and partially fluorinated polyolefins, effective for inhibiting beard growth. The compositions may further comprise at least one impact modifier, flow promotor or filler.

Abstract: Polymer blend compositions comprise (a) a polyphenylene ether polymer, (b) a polyphthalamide comprising the reaction product of (i) hexamethylene diamine or a mixture of hexamethylene diamine and trimethylhexamethylene diamine, and (ii) terephthalic acid, and optionally (iii) at least one acid selected from the group consisting of isophthalic acid and adipic acid, provided that a mixture of said diamines is employed if reactant (iii) is absent, and (c) at least one compatibilizer. The compositions may further include an aliphatic polyamide and/or an impact modifier.

Abstract: Improved thermoplastic compositions that are resistant to die beard growth are described herein, comprising poly(phenylene ether) resins, polyamide resins and an amount of a beard growth reducing agent selected from the group consisting of non-elastomeric polyolefin resins, partially fluorinated polyolefins, and mixtures of non-elastomeric polyolefin resins and partially fluorinated polyolefins, effective for inhibiting beard growth. The compositions may further comprise at least one impact modifier, flow promotor or filler.

Abstract: 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.

Abstract: Novel ultra high impact molding compositions have been made which comprise a polyphenylene ether resin, a block copolymer of an alkenyl aromatic compound and a diene rubber and a hydrogenated block copolymer of the A-B-A type wherein A is an alkenyl aromatic compound and B is a diene rubber block.

Abstract: Thermoplastic molding compositions are disclosed which comprise an intimate admixture of (i) from about 5 to about 95 parts by weight of a rubber-modified copolymer of a vinyl aromatic compound and an .alpha.,.beta.-unsaturated cyclic anhydride, (ii) from about 30 to about 1 parts by weight of a block or graft copolymer of a vinyl aromatic compound and a conjugated diene, and (iii) from 0 to about 95 parts by weight of a polyphenylene ether resin.

Abstract: Novel thermoplastic molding compositions are disclosed which are based on a rubber modified copolymer of a vinyl aromatic compound and an .alpha.,.beta.-unsaturated cyclic anhydride, and an acrylic graft polymerization copolymer, with or without a polyphenylene ether resin.

Abstract: Thermoplastic molding compositions are disclosed which comprise an intimate admixture of (i) a copolymer of a vinyl aromatic compound and an .alpha.,.beta.-unsaturated cyclic anhydride, including rubber-modified copolymers thereof, and (ii) a radial teleblock copolymer comprising a vinyl aromatic compound, a conjugated diene and a coupling agent. Optionally, the composition can also include a polyphenylene ether resin.

Abstract: A novel process is disclosed for preparing a composition which comprises a polyphenylene ether resin and an alkenyl aromatic resin. The process is based on preparing a preblend of the polyphenylene ether resin with a compound that reduces the alloying temperature of the polyphenylene ether resin, and thereafter combining the preblend with the alkenyl aromatic resin.