Abstract: A process, and the product thereof, is provided for the manufacture of an interpolymer having a high resistance to chemical attack and a low gas and water vapour permeability, the interpolymer consisting essentially of an unsaturated nitrile, a monovinylidene aromatic compound and an alphaolefin. Also provided are foods, beverages and medicines contained in packages of the interpolymer.

Abstract: A process for continuous monitoring of the concentration of an aluminum halide (e.g. aluminum trichloride) in solution in a volatile solvent (e.g. methylchloride) comprises contacting the solution with steam or hot water so as to flash off the solvent and hydrolyse the aluminum halide to an acid reaction product, neutralizing the reaction solution with alkali, measuring the volume of solvent flashed off and measuring the quantity of alkali necessary to maintain substantially neutral pH of the reaction products. From these measurements, continuous readings of aluminum halide concentration are obtainable. The process is especially useful in monitoring the aluminum chloride catalyst concentration in a butyl rubber polymerization facility.

Abstract: A filled thermoplastic composition is produced by first preparing a masterbatch of an impact polystyrene, a rubber, an oil and a filler and by secondly mixing the masterbatch with a polystyrene composition. The filled thermoplastic composition has acceptable properties.The present invention is directed to a process for the production of filled thermoplastic compositions. More particularly, it is directed to filled polystyrene compositions.For many years, the cost of polystyrene and impact polystyrene was not much higher than the cost of fillers conventionally used in the rubber industry. From the rubber industry, it has been well known that the cost of incorporating fillers into rubber is significant but is a necessary feature to achieve the required strength properties in the rubber compounds. Such incorporation of fillers into rubber requires the use of high shear mixing equipment. Plastics generally do not require the presence of filler to achieve good strength properties.

Abstract: Synthetic rubber compositions of improved green strength are prepared by incorporating in a synthetic rubber polymer, such as NBR or SBR, a small number of tertiary amine groups, and reacting this polymer with a halogen compound containing two or more halogen atoms capable of forming quarternary ammonium salts with the tertiary amine groups on the polymer. 1,4-dibromobutene-2 is a suitable halogen compound. The tertiary amine groups can be incorporated by copolymerizing dimethylaminoethyl acrylate with the rubbery copolymer forming monomers.

Abstract: Bromobutyl alone or blended with other free radical curable polymers or with free radical curable monomers can be vulcanized by heating in the presence of free radical agents.

Abstract: Latex-based coating materials are prepared frequently by compounding the latex with large quantities of calcium carbonate fillers. Whenever these fillers contain water-soluble calcium and magnesium compounds as impurities latices prepared with anionic emulsifiers are made more unstable, apparently because of reaction between these impurities and the emulsifier. This instability can be overcome by including in the latex a water-soluble fluoride such as ammonium or potassium fluoride in an amount generally under 5 parts by weight per 100 parts dry weight of latex. The process involves adding such a fluoride in an amount sufficient to stabilize the latex, generally under 5 parts per hundred of latex, dry weight.

Abstract: In the blending of a polymer of chloroprene with a lesser proportion of a diene/nitrile rubbery copolymer, a composition of much improved processing, as for example ease of handling on a mill and uniformity of mixing, is obtained when the nitrile copolymer is selected as a copolymer of about 55-80 mole % of a 2-alkyl butadiene-1,3 and about 20-45 mole % of an acrylic nitrile.

Abstract: A process is described for reducing the heat promoted interaction of bromobutyl and carbon black by the incorporation of an interaction retarding agent selected from boron compounds containing oxygen bonded to boron, anhydrides of carboxylic acids and channel carbon black.

Abstract: A covered plastic container, and a method for the manufacture thereof, is provided in which a plastic laminate cover is sealed to the walls of the container in such a manner that only the inner layer of the laminate cover is sealed to the container and that the outer layer or layers of the laminate cover are removable therefrom and thereafter usable as a press-on cover.