Abstract: Thermoplastic compositions comprising polyphenylene ethers and polyesters, impact-modified by glycidyl (meth)acrylate grafted EPDM and compatibilized by an aromatic polycarbonate exhibit high impact strength alone and when combined with other impact modifiers. Their shear sensitive viscosity properties makes them uniquely suitable for extrusion and blow molding applications.

Abstract: The present invention provides a resin composition excellent in balance of mechanical strengths and superior in solvent resistance and processability which comprises:(a) a polyolefin resin in an amount of 95-50% by weight,(b) a polyphenylene ether resin in an amount of 5-50% by weight,(c) a partially hydrogenated alkenyl aromatic compound-isoprene block copolymer in an amount of 1-7 parts by weight based on totally 100 parts by weight of the components (a) and (b), and(d) an ethylene-.alpha.-olefin copolymer elastomer in an amount of 5-30 parts by weight based on totally 100 parts by weight of the components (a) and (b).This composition can be easily molded into articles excellent in balance of properties and having high uniformity and smoothness in appearance.

Abstract: Polymer blends of a) polymers containing predominantly mers of(meth)acrylates and/or glutarimides with b) up to about 40 weight percent of polymers having greater than about 50 mol % vinyl alcohol mers exhibit useful barrier properties to oxygen and other environmental gases, while maintaining or enhancing physical properties and clarity.

Abstract: The invention relates to thermoplastic molding compositions of PVC and (ter)polymers which can optionally be grafted on to a resin and are suitable for the production of optical discs by virtue of their extremely low double refraction.

Abstract: Disclosed is a thermoplastic resin composition improved in low-temperature impact resistance and processability which comprises:(A) 5-95% by weight of a polyamide resin which has a relative viscosity of 3.1-4.5 and has a ratio .alpha. of terminal amino group to terminal carboxyl group of 0<.alpha..ltoreq.0.99,(B) 95-5% by weight of a modified polyphenylene ether resin, modified with a compound having at least one functional group in its molecule, or a mixture of said modified polyphenylene ether resin and a polyphenylene ether resin, and(C) 0-50 parts by weight of a rubber-like polymer per 100 parts by weight of (A)+(B).

Abstract: Polymer blend compositions having improved flammability performance comprise a polyphenylene ether resin, a high impact polystyrene resin, a flame retardant and a high molecular weight polystyrene resin having a weight average molecular weight, Mw, greater than about 400,000.

Abstract: The invention relates to thermoplastic molding compositions of PVC and (ter)polymers which can optionally be grafted on to a resin and are suitable for the production of optical discs by virtue of their extremely low double refraction.

Abstract: Compositions comprising a polyepoxy compound (preferably bisphenol A diglycidyl ether) and a polyphenylene ether which has been melt processed (e.g., by extrusion) at a temperature in the range of about 230.degree.-390.degree. C., are cured at temperatures in the range of about 190.degree.-250.degree. C. by various epoxy cure catalysts. They may used in the preparation of laminates with excellent dielectric properties, solvent resistance and solder resistance, useful in printed circuit board production.

Abstract: There is here provided a thermoplastic resin composition which comprises (I) 99 to 1% by weight of a polyamide resin, (II) 1 to 99% by weight of at least one kind of resin selected from the group consisting of a polyphenylene ether resin, a mixture of the polyphenylene ether resin and a styrene polymer, and a polycarbonate resin, (III) 0.1 to 100 parts by weight, based on 100 parts by weight of the aforesaid resins (I)+(II), of a multi-phase structure thermoplastic resin which is composed of 5 to 95% by weight of an epoxy group-containing olefin copolymer and 95 to 5% by weight of a vinyl polymer or copolymer obtained from at least one kind of vinyl monomer, either of both the components being formed with a dispersion phase having a particle diameter of 0.001 to 10 .mu.m. A method for preparing the above-mentioned thermoplastic resin composition is also provided here.

Abstract: A multi-layer structure polymer (A) comprising (i) 2 to 30% by weight of an alkyl methacrylate unit, (ii) 50 to 80% by weight of an alkyl acrylate unit, (iii) 5 to 20% by weight of an unsaturated nitrile unit and (iv) 5 to 40% by weight of an aromatic vinyl unit, wherein:(a) the multi-layer structure polymer consists essentially of an inner layer and an outer layer in a ring form, the portion of the inner layer (.beta. layer) within the ring has an average diameter of 2,000 to 6,500 .ANG.,(b) the outer layer (.alpha. layer) portion surrounding the inner layer in the ring form has an average thickness of 200 to 500 .ANG.,(c) the inner layer portion has a plurality of small particles (.gamma. layer) totally micro-dispersed, and(d) the multi-layer structure polymer has an acetone-insoluble portion having (i) a swell degree in methyl ethyl ketone of 1.5 to 10 and (ii) a tensile modulus of 1,000 to 10,000 kg/cm.sup.

Abstract: An optical device comprising a mixture of a polymer constituted mainly of aromatic vinyl monomer units and polyphenylene ether, characterized in that the average molecular weight of the polyphenylene ether is from 0.3 to 0.7 expressed in terms of the intrinsic viscosity measured in chloroform at 25.degree. C.

Abstract: This invention relates to compositions which contain polyphenylene ether resin and polyamide resin, wherein a portion of the polyphenylene ether is modified by terminal oxazolinization.

Abstract: The mechanical properties of polymer mixtures which comprise a polyphenylene ether, a polyamide, and an agent to improve the impact strength can be improved by using as an agent to improve the impact strength a mixture consisting ofa) 10-90 parts by weight of a partially hydrogenated diene-vinylaromatic diblock copolymer and,b) 90-10 parts by weight of a partially hydrogenated diene-vinylaromatic polyblock copolymer having at least three blocks.

Abstract: The present invention is a composition for making a solid one-piece golf ball and the core of a two-piece or multi-layer golf ball with a butadiene base crosslinked by a methacrylic acid zinc salt. The resulting product is a golf ball with outstanding performance which possesses both resilience and durability and which can be reproduced accurately and economically. This type of golf ball is suitable for play by tournament caliber golfers.

Abstract: Polymers and polymer blends containing, as a copolymerized constituent, an unsaturated dicarboxylic acid anhydride (such as maleic anhydride); and more particularly to stabilizing the same with poly(p-hydroxystyrene) and copolymers of p-hydroxystyrene and styrene to reduce splay and streaking during molding.

Abstract: Disclosed are thermoplastic resin compositions, comprising:(a) a polyphenylene ether resin or a resin composition containing a polyphenylene ether,(b) a modified propylene polymer, or a propylene based resin composition containing the modified propylene polymer and/or a propylene polymer, and(c) optionally, a rubbery substance, wherein the proportion of the component (a) to the sum of the components (a) and (b) is 1 to 90% by weight, and that of the component (b) to the sum of the components (a) and (b) is 99 to 10% by weight, and when the component (c) is present, the proportion of the component (c) to the sum of the components (a) and (b) is 1 to 50 parts by weight per 100 parts by weight of (a) plus (b).

Abstract: An improved method for carboxylating styrenic resins and particularly impact-modified styrenic resins such as ABS resins, by melt-processing a mixture comprising the styrenic resin, an ethylenically-unsaturated carboxylic compound, and, optionally, a free-radical generator.

Abstract: A novel, optically transparent, isotropic molding for optical purposes which is free of orientation birefringence consists of a mixture of polyphenylene ethers, vinylaromatic polymers and additives. The novel molding contains traces of novel diphenoquinone and/or diphenohydroquinone derivatives as additives and may also contain novel ammonium salts of sulfuric acid half esters of diphenohydroquinones as further additives. The novel molding has a yellowness index (YI) of from 40 to 90. It can be produced in a simple manner by injection molding processes. The novel molding in the form of a circular disk having a central hole is very useful as a dimensionally stable substrate of audio compact disks (CD), audiovisual compact disks (CDV), laser-optical computer disks and magneto-optical computer disks, and data media of this type which contain these novel dimensionally stable substrates have particularly advantageous performance characteristics.

Abstract: Block copolymers based on polyphenylene ethers and polycondensates obtained by a process that comprises of the following steps:a polyphenylene ether with a functional end group is prepared by oxidative coupling of a mixture of 90.0 to 99.8 mole % of a substituted phenol and 10.0 to 0.2 mole % of a functionalized phenol;a polycondensation of suitable monomers is then carried out in the presence of this functionalized polyphenylene ether,are disclosed.

Abstract: A process of forming block and/or graft copolymers of a polyester and a polyphenylene oxide which comprises heating a mixture of the polyester and the polyphenylene oxide in the presence of a phosphite compound.