Stauffer Chemical Company

Rhone-poulenc Basic Chemicals Co.

Ruth E Gallagher

Jagadish C Goswami

Arthur J Yu

Fawzy G Sherif

Paul Kraft

Improved magnesium phosphate fast-setting cements comprising an effective amount of fiber to increase the impact strength of the cement. These fibers include glass, metal, organic and mixtures thereof.

Process for making reinforced magnesium phosphate fast-setting cements

An internally plasticized vinyl chloride copolymer composition having good low temperature flexibility and tensile properties is disclosed. It consists essentially of from about 45% to about 80%, by weight, vinyl chloride, from about 15% to about 54%, by weight, of a C.sub.2 -C.sub.10 alkyl acrylate, and from about 1% to about 15%, by weight, of one or more C.sub.8 -C.sub.22 dialkyl maleate and/or fumarate. The copolymer is formed using conventional suspension, emulsion, bulk and solution polymerization procedures.

Internally plasticized vinyl chloride copolymer composition

An emulsion copolymer resin which contains from about 75% to about 90% by weight vinyl chloride, from about 5% to about 15% vinyl acetate and from about 5% to about 15% of a bis(hydrocarbyl)vinylphosphonate, has a fusion temperature of from about 200.degree. F. to about 300.degree. F. and has utility as a low fusion resin in the formation of cellular polyvinyl chloride products.

Low fusion copolymer comprising vinyl chloride, vinyl acetate, and

Certain rigid plastics are reinforced by admixture with a plurality of rubber-containing interpolymer particles which are prepared by the suspension polymerization of vinyl chloride in the presence of an aqueous emulsion of particles comprising a crosslinked acrylic rubber having a Tg of less than about 25.degree. C. The resulting reinforced plastics display excellent physical properties.

Rigid plastic admixed with crosslinked acrylate/vinyl chloride

Rigid vinyl chloride polymers are reinforced by admixture with a plurality of elastomer-containing interpolymer particles which are prepared by the suspension polymerization of vinyl chloride in the presence of an aqueous emulsion of particles comprising a crosslinked butyl acrylate/2-ethylhexyl acrylate acrylic elastomer having a Tg of less than about 25.degree.C. The resulting reinforced vinyl chloride polymers display excellent physical properties.

Reinforcement of vinyl chloride resins with suspension emulsion

An impact-resistant and weatherable thermoplastic composition comprising from about 10 to about 50 weight percent of a crosslinked acrylate elastomer having a Tg of less than 25.degree.C., from about 5 to about 35 weight percent of a crosslinked styrene-acrylonitrile copolymer and from about 15 to about 85 weight percent of a non-crosslinked or linear styrene-acrylonitrile copolymer. The composition is made by a three-step sequence comprising emulsion polymerizing of an alkyl acrylate containing at least one crosslinking monomer, emulsion polymerizing a monomer mixture of styrene, acrylonitrile and at least one crosslinking monomer in the presence of the crosslinked acrylate elastomer formed in the previous step, or a reverse sequence of the prior two emulsion polymerization procedures, and, finally, emulsion or suspension polymerizing of styrene, acrylonitrile in the presence of the previously formed product.

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Dobbs Ferry, NY, United States of America

Ruth E Gallagher