Abstract: Method of preparing films of acrylonitrile polymer exhibiting very high tensile strength, stiffness, optical clarity, and outstanding gas barrier properties. Method entails extruding a hot, concentrated solution of said polymer in a solvent therefor that is water-soluble, e.g., dimethyl sulfoxide, onto a film-supporting surface, e.g., a flat surface, or a drum, which, preferably, has a low energy surface such as provided by wetting the surface with aqueous dimethyl sulfoxide, or coated with polytetrafluoroethylene, or other suitable means to thereby form a film. The resulting film is then contacted with an aqueous medium, e.g., water to remove the solvent (e.g., dimethyl sulfoxide) and partially replace it with water, this treatment being effected under conditions that will prevent the film from curling or puckering. The resulting film is composed essentially of acrylonitrile polymer and water, and is ignition resistant.

Abstract: Polyphenylene ether resin compositions are flame retarded by using a combination of a phosphine oxide and a phosphonate in a weight ratio of about 1:3 to 3:1.

Abstract: Polyesters containing a freely or chemically incorporated heat stabilizing agent which is a phosphonate of the chemical formula: ##STR1## in which R.sub.1 and R.sub.2 may be identical or different and describe an alkyl radical with 1 to 4 carbon atoms, and in which X represents ##STR2## in amounts representing 10 to 400 ppm phosphorus.

Abstract: There are provided thermoplastic compositions comprising a low molecular weight polyphenylene ether resin which has an intrinsic viscosity of less than about 0.4, preferably less than 0.33 deciliters/gram as measured in chloroform at 30.degree. C., a styrene resin and an elastomeric block copolymer of a vinyl aromatic compound and a conjugated diene. The compositions are moldable to articles having good impact resistance.

Abstract: The present invention concerns a new class of pigments derived from cumarin and, more particularly, of bis-iminocumarinic and bis-cumarinic pigments having the following formula I described hereinlater. The present invention also includes novel processes for making the cumarinic pigments of the invention. Also, the invention relates to the use of the novel pigments of the invention for the preparation of paints, storing enamels, inks and pastes for the printing of fabrics. Also, included in this invention is the dyeing of plastic materials with the novel cumarinic pigments.

Abstract: An improved process for preparing alkali metal siliconates wherein the improvement comprises, first substituting at least 20-90 mole percent of the chlorine groups on the silanes with hydrocarbonoxy groups, by reacting the chlorosilane with an aliphatic alcohol or alcohol and water heating the mixture to remove acid and then finally adding the alkoxylated silane to an aqueous alkali metal hydroxide solution to form the desired alkali metal siliconate.

Abstract: A hardenable resin composition (or a component thereof) containing as a fire retardant ingredient particulate aluminium hydroxide wherein 10 to 30% by weight of the particles have a diameter less than 1 micron, 45 to 75% by weight of the particles have a diameter in the range from 38 to 150 microns and less than 20% by weight of the particles have a diameter in the range from 1 to 38 microns. The invention includes a preferred blend of aluminium hydroxide.

Abstract: An air pore lacquer comprising a solvent, a binder and at least one additive which is a white pigment or white filler, the additive having an average particle size D.sub.zv which is at least about 10% smaller than the optimum average particle size for the same binder free from air pores. When the additives are pigments they are preferably 20 to 50% smaller, and when they are fillers preferably 20 to 80% smaller, than the optimum particle size for the air pore-free binder. Rutile and anatase TiO.sub.2 are preferred.

Abstract: Disclosed is an ABS type polyblend composition exhibiting improved physical properties, which comprises from about 5 to 60% by weight of a copolymer of styrene and acrylonitrile; from about 10 to 70% by weight of a graft copolymer of styrene, acrylonitrile, and a butadiene polymer having an average rubber particle size of from about 1 to 10.mu.; and from about 10 to 70% of a high butadiene content backbone copolymer of styrene, acrylonitrile, and a butadiene polymer having an average rubber particle size of less than abut 0.5.mu., the ratios of the backbone copolymer and the styrene-acrylonitrile-butadiene polymer copolymer being adjusted such that from about 15 to 25% by weight of the total butadiene polymer content of the polyblend is provided by the larger rubber particle size graft copolymer.

Abstract: A rapid curing polybutadiene resin system dielectric coating composition suitable for coating electrical components such as thin film resistors is disclosed. This composition cures very rapidly and greatly improves adhesion to the coated article.

Abstract: High-hiding calcium color lakes, possessing great full-shade brilliance and improved lightfastness, of the general formula ##STR1## where D is a radical of the formula ##STR2## in which (1) a predominant proportion of primary particles has one or more dimensions greater than 0.3 .mu.m,(2) the length/width ratio of the predominant proportion of primary particles is not less than 2:1 and for which(3) the lightfastness of polyethylene containing 0.05% of colorant, and of plasticized PVC containing a 1:10 reduction of colorant, is rated at least 5 on a blue scale with ratings of from 1 to 8.The lakes are particularly suitable for coloring plastics.

Abstract: Thermally stable polycarbonate compositions are obtained by admixing with a high molecular weight aromatic polycarbonate resin a stabilizing amount of a phosphonite oxetane.

Abstract: What is disclosed are organopolysiloxane compositions that are curable to solid elastomers at room temperature and which exhibit mold resistance due to the incorporation of 2-(4-thiazolyl)benzimidazole and certain organic surfactants.

Abstract: A method of clearing a polysaccharide ester membrane employing a clearing solvent comprising a first moiety selected from a group consisting of alcohols, ketones, ethers, esters, and mixtures thereof and a second moiety comprising a solvent selected from a group consisting of 2-ethoxyethanol, 2-ethoxyethyl acetate, methyl acetoacetate, ethyl acetoacetate, acetol, and mixtures thereof, the first moiety having a boiling point lower than the second moiety.The solvents employed as the second moiety of the instant invention's clearing solvent are much less toxic than solvents employed as the second moiety of prior art clearing solvents.

Abstract: Coating compositions comprising intimate blends of a poly(vinyl acetal) and a low molecular weight polystyrene or poly(.alpha.-methylstyrene). The coating compositions may contain up to 500 parts by weight of an inert non-photoconductive pigment per 100 parts by weight of polymer blend. The compositions are useful for the preparation of electrographic recording media which possess improved toner adhesion.

Abstract: Linear, branched and/or cross-linked block polymers of polyphenylene oxides and polystyrene are described. The polyphenylene oxide-polystyrene block polymers can be molded, calendered, or extruded as films, sheets, fibers, laminates or other useful articles of manufacture.

Abstract: Coating compositions which are free of volatile organic solvents and curable under the action of heat or radiation without undesirable evaporation of organic solvents, prepared by reacting a copolymer resin of a cyclopentadiene type compound such as dicyclopentadiene and maleic anhydride, with at least one compound represented by the formula ##STR1## or the like wherein X is H or --CH.sub.3 and R is --CH.sub.2 CH.sub.2 OH or the like to produce a resin which is then dissolved in a reactive solvent such as a (meth)acrylate type monomer or ammonia water; and a process for preparing the coating compositions.

Abstract: A food base preservative for material surfaces such as finished furniture surfaces, painted surfaces, glass surfaces, vinyl plastic surfaces, and the like. The preservative solution is made from okra, water and a food preservative agent, and it is used by impregnating soft cloths, such as towels, with the solution and shining material surfaces with the impregnated cloths.

Abstract: Disclosed is a self-extinguishing polystyrenic composition comprising a polystyrenic resin, a fire-retardant amount of a halogenated organic fire-retardant agent and a benzotriazolic compound having the formula ##STR1## wherein R.sub.1 is H or --CH.sub.3 and R.sub.2 is H or --CH.sub.2 N(R.sub.3).sub.2 wherein R.sub.3 is H, an alkyl radical containing from about 1 to 12 carbon atoms or --CH.sub.2 CH.sub.2 OH, in an amount between about 1 and 50% of the weight of said fire-retardant agent.

Abstract: An organopolysiloxane composition having a microbiocidal action comprising an .alpha.,.omega.-dihydroxypolydiorganosiloxane and a benzimidazolyl-alkyl-carbamate of the formula ##STR1## wherein R.sup.1 is an alkyl radical with 1 to 4 carbon atoms, optionally substituted by the radical --OR.sup.3,R.sup.3 is an alkyl radical with 1 to 4 carbon atoms or the phenyl radical, andR.sup.2 is hydrogen, an alkyl radical with 1 to 4 carbon atoms, haolgen or nitro.Advantageously the carbamate is methylbenzimidazolylmethyl-carbamate, N-(fluorodichloromethylthio)-phthalimide, is present as a synergistic fungicide and the composition further comprises a silicon-containing crosslinking agent for the siloxane, a heavy metal salt or amino accellerant for crosslinking and an .alpha.,.omega.-bis-(trimethylsiloxy)-polydimethylsiloxane. Water per se or in atmospheric air cures the composition to a rubber elastic product resistant to microbes.