Abstract: Composite scrap materials having one or more polymer components and a fabric component are rendered reprocessable by subjecting them to high energy radiation at a dose sufficient to selectively degrade at least one component of the material leaving the other component or components substantially unchanged.

Abstract: Polycarbonates suitable for forming molded articles are comprised of a polycarbonate resin and 0.25 to 0.75 parts by weight per 100 parts of polycarbonate of an ethylene-vinylacetate copolymer. The articles molded from the polycarbonate resin with the ethylene-vinylacetate copolymer therein exhibit improved stress crack resistance.

Abstract: Disclosed herein is a method for reducing dripping in flaming polystyrene compositions which method comprises incorporating into the polymer composition an effective amount of a polychloroprene rubber component in order to reduce dripping of the flaming composition.

Abstract: Water soluble, high solids urethane coating compositions comprising a polycaprolactone derivative, an aliphatic polyisocyanate and water. The polycaprolactone derivative is a water soluble, carboxyl modified oligomer addition reaction product mixture obtained by the reaction of polycaprolactone polyol and an anhydride of a polycarboxylic acid to produce a water insoluble adduct that on reaction with an inorganic or organic base produces the water soluble, carboxyl modified oligomer addition reaction product mixtures which are eminently suitable for the production of urethane coating compositions of this invention. The polycaprolactone polyol reacted with the polycarboxylic acid has an average at least two hydroxyl groups in the molecule, a hydroxyl number of from about 15 to about 600 and an average molecular weight of from about 290 to about 6,000. The carboxylic acid anhydride has at least one intramolecular carboxylic anhydride group.

Abstract: A glass size composition comprising an epoxy resin emulsion, a polyvinylpyrrolidone and a polyethylene glycol ester mono oleate is particularly suitable for use in epoxy resin filament winding.

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: Compositions comprising a blend of poly(alkylene terephthalates) and an impact modifier which is a multi-phase composite interpolymer comprising a crosslinked acrylic first stage which also contains graftlinking monomer and a final rigid thermoplastic phase. Also claimed is the process for improving the impact strength of poly(alkylene terephthalates) comprising blending therewith the multi-phase composite interpolymer modifier defined above.

Abstract: A normally-solid, bioabsorbable, hydrolyzable, polymeric reaction product of (A) a polyglycolic acid composition and (B) a polyester of diglycolic acid and an unhindered glycol and to the process of preparing the same and the use of said polymeric reaction product as a sterile surgical element and as a device for the controlled continuous administration of a predetermined dosage of a drug to a living animal.

Abstract: Using a novel process of one or more combined steps, modified novel block copolymers are prepared by alkylating or hydrogenating a block copolymer precursor containing at least two segments, in which segment A consists of a styrene polymer, either styrene alone or a hydrogenated random butadiene-styrene copolymer and from 1% to about 50% by weight of segment B being an alkylene oxide or sulfide copolymerized with the first segment as an AB or BAB copolymer. These novel copolymers perform as multifunctional additives in industrial organic compositions, both hydrocarbon fluids, such as petroleum-derived, and non-hydrocarbon, or synthetic fluids, providing such utility as detergency, emulsification and viscosity index improvement. These copolymers have molecular weights in the range of from about 1,000 to 500,000. The copolymers are particularly useful in lubricating oils, greases and fuels, especially cross-graded lubricants, crude oils, diesel oils, gasoline and fuel oils.

Abstract: An improved, low fuming, thermally stable, texturing finish for a synthetic filamentary material is disclosed comprising 40 to 75 percent of a lubricant, exemplified by pentaerythritol tetrapelargonate; 20 to 50 percent of an emulsifier, exemplified by condensates of castor oil with from about 2 to about 12 moles of ethylene oxide; 2 to 20 percent of an antistat-auxiliary emulsifier, such as a neutralized phosphate ester of an alcohol; and optionally 0 to 2 percent of a thermal stabilizer, exemplified by a condensate of 3-methyl-6-tert-butylphenol with crotonaldehyde. An oil in water emulsion is produced having an oil content of from about 5 to 20 weight percent.

Abstract: A resin composition comprising: (a) an aromatic co-polyester comprising terephthalic acid, isophthalic acid and a halogen-free bisphenol; and (b) a halogen-containing aromatic co-polyester containing terephthalic acid, isophthalic acid and, at least in part, a bisphenol bearing a halogen substituent(s) as a comonomer. Molded articles prepared from such a resin composition possess excellent mechanical properties, electrical properties and flame-retardant capabilities.

Abstract: Fluid, stable compositions containing aqueous disperse systems of anionizable material, e.g., a latex of an organic polymer having carboxylate functionality, and a water-dispersible amphoteric polyelectrolyte, e.g., a copolymer of 2-aminoethyl methacrylate and methacrylic acid, are coacervated by maintaining the pH of the composition at a value below the isoelectric point of the amphoteric polyelectrolyte and a value at which the disperse material contains anions.