Abstract: Modified chlorinated polyethylene (CPE) for use as an impact modifier for polyvinyl chloride, comprising a thermoplastic grafted CPE prepared by polymerizing compatible monomers or comonomers, e.g. methyl methacrylate/styrene, methylmethacrylate or vinyl acetate, onto the CPE backbone via an aqueous slurry suspension polymerization and the process of producing the cited modified chlorinated polyethylene.

Abstract: Graft copolymers of polymerizable monomers and olefin/carbon monoxide copolymers are uniquely suitable as compatibilizing agents in the preparation of polyester or polycarbonate containing resin blends.

Abstract: A polymeric polyblend composition comprising a vinylidene chloride interpolymer, polyvinylchloride, and a compatibilizing amount of a compatabilizing polymer, said polymers being miscible.

Abstract: A polymeric polyblend comprising a vinylidene chloride interpolymer and a thermoplastic graft copolymer.

Abstract: An article for the storage of food products, the body of the article comprising multilayers of different thermoplastic resins which together provide excellent water vapor and gas barrier properties to preserve the food product while in its packaged state. The article contains at least one skin layer, one barrier layer, and a tie layer interposed between each skin layer and the barrier layer. The tie layer contains a graft copolymer formed from a polymerizable mixture comprising a monomer mixture and a preformed polymer which is capable of imbibing the monomer mixture. The preformed polymer is allowed to contact the monomer mixture for a length of time and at a temperature such that enough of the monomer mixture is imbibed therein, and then the polymerizable mixture is polymerized.

Abstract: A polymeric blend composition comprising a vinylidene chloride interpolymer, a copolymer of a monovinylidene aromatic monomer and methyl methacrylate, and, optionally, a polymer formed from one or more monovinylidene aromatic monomers. The polymeric blend compositions of the present invention have been found to possess excellent impact strength and sufficient melt strength and rigidity to be thermoformable.

Abstract: A polycarbonate blend having both improved solvent resistance and improved impact strength comprising in admixture a polycarbonate, a styrenic thermoplastic resin, a grafted olefin/carbon monoxide copolymer and, optionally, a rubber toughening agent.

Abstract: The specification discloses a method for forming a rubber concentrate which can be incorporated in relatively high percentages into rubber reinforced polymers without adversely affecting processability. A rigid polymer forming monomer system is polymerized in the presence of a mixture of a low molecular weight rubber (weight average molecular weight of from about 2,000 to about 50,000) and a higher molecular weight rubber (weight average molecular weight of from about 100,000 to about 400,000). The resulting rubber concentrate can be incorporated into a rigid polymer blend which is compatible with the rigid polymer forming monomer phase of the rubber concentrate. The resulting new composition has significantly improved impact strength and acceptable processability.

Abstract: Improved combinations of gloss and toughness are obtained in rubber-modified, impact-resistant monovinylidene aromatic polymer compositions when mass-produced particles consisting of a blend of polybutadiene with a block copolymer rubber are dispersed therein. Advantageously, the rubber-modified polymer compositions also comprise one or more groups of emulsion-produced rubber particles.

Abstract: A method for controlling the regeneration (desorbtion) of an absorbent material, i.e., an adsorbent bead or particle, for hydrocarbon vapors vented from confined spaces during periods of liquid fluctuations in the confined zone or for hydrocarbon vapors vented from within said zone which vapors are deliberately generated, or as a result of heating and cooling the confined spaces as a result of exposure to atmospheric temperature fluctuations of the confined space.

Abstract: A process for purifying a crude crystalline or crystallizable water-immiscible aromatic compound contaminated with one or more related congeneric impurities which cannot be readily separated by distillation, said process comprising:(1) forming a dispersion of liquefied crude material in an aqueous liquid by agitating the mixture;(2) effecting crystallization of the desired aromatic compound while maintaining the dispersion;(3) reducing agitation sufficiently to permit the formation of three phases, i.e., a solid crystalline phase, an aqueous liquid phase, and a mother liquor phase; and(4) separating the crystals;Said aqueous liquid being immiscible with, and having a density between, the aforementioned solid crystalline phase and the mother liquor phase.