Abstract: Pressure sensitive adhesive compositions comprising (a) a synthetic polymer latex; and (b) an aqueous dispersion of thinned, derivatized starch are disclosed.

Abstract: Pressure sensitive adhesive compositions comprising (a) a synthetic polymer latex; and (b) an aqueous dispersion of thinned, derivatized starch are disclosed.

Abstract: Graphite composite articles comprising a graphite structure formed from a porous graphite material and an impregnant selected from the group consisting of glass precursors and ceramic precursors, filling the pores and coating the surface of the structure. The present invention also provides a process for the manufacture of graphite composites comprising the steps of infiltrating a porous graphite structure with a material selected from the group consisting of glass precursors and ceramic precursors and subsequently converting the precursor to a glass or a ceramic respectively.

Abstract: Graphite composite articles comprising a graphite structure formed from a porous graphite material and an impregnant selected from the group consisting of glass precursors and ceramic precursors, filling the pores and coating the surface of the structure. The present invention also provides a process for the manufacture of graphite composites comprising the steps of infiltrating a porous graphite structure with a material selected from the group consisting of glass precursors and ceramic precursors and subsequently converting the precursor to a glass or a ceramic respectively.

Abstract: An electrically conductive composite comprising conductive polyacetylene moiety, a nonconductive high nitrile resin, and a dopant. The high nitrile resin further comprises at least nitrile monomers or comonomers and optionally copolymerized with comonomers of mono-ethylenically unsaturated monomers and conjugated diolefins and further optionally containing an elastomeric component.The invention further includes a process for producing an electrically conductive composite comprising:(1) impregnating a high nitrile resin with a Zeigler type catalyst comprising an alkyl aluminum compound and alkyl, alkyl halide, halide, oxyhalide or alkoxide of Group IVA and VA metals,(2) exposing the impregnated high nitrile resin with an alkyne under polymerization conditions whereby polymerization occurs to form a polyacetylene/nitrile composite, and(3) adding dopant to the composite.

Abstract: Conjugated dienes are polymerized by a catalyst system comprised of a transition metal complex consisting of at least one binucleating ligand attached to at least one transition metal containing nucleus; and at least one organometallic cocatalyst containing at least one element of Group IA, IIA or Group IIIA.

Abstract: A multiple stage autodeposition of organic polymer coating compositions deposited onto metal substrates wherein the coating composition's thickness does not increase by more than about 20.DELTA. compared to a single dry coating. The coated metal substrates formed by the process of the instant invention are corrosion resistant.

Abstract: A novel transition metal complex catalyst comprised of a transition metal attached to a ligand containing electron withdrawing substituents is employed in a polymerization process for producing nylon type polyamides.

Abstract: A process for producing polyamides comprising contacting a polyamide forming system with a transition metal complex catalyst at a temperature sufficient to cause polymerization. The transition metal complex catalysts are at least one binucleating ligand attached to at least one transition metal containing nucleus.

Abstract: Acetylene and other 1-alkynes are polymerized by a catalyst system comprised of a transition metal complex consisting of at least one binucleating ligand attached to at least one transition metal containing nucleus; and at least one organometallic cocatalyst containing at least one element of Group 1a, 2a or Group 3a.

Abstract: Copolymers of acrylonitrile and propylene are produced by the process of the instant invention. This process comprises polymerizing (1) a major portion of an olefinically unsaturated nitrile monomer with (2) a minor portion of propylene, in the presence of a free radical initiator, while maintaining the molar ratio of propylene to the olefinically unsaturated nitrile during polymerization at a ratio greater than the molar ratio of propylene to the olefinically unsaturated nitrile in the final polymer.

Abstract: Ethylene is polymerized by a catalyst system comprised of a transition metal complex consisting of at least one binucleating ligand attached to at least one transition metal containing nucleus; and an organometallic cocatalyst containing at least one element of Group IA, IIA or Group IIIA.

Abstract: This invention relates to novel catalysts and to the use of these catalysts in a process for the polymerization of alpha-olefins. The catalysts comprise a transition metal compound and an organo metallic aluminum activator of the following structure: ##STR1## Preferred catalysts comprise titanium compounds and 1-phenyl-2-(dialkyl alumino)-1-heptene.

Abstract: This invention relates to a supported catalyst and to the use of this catalyst in a process for the polymerization of alpha-olefins. The catalyst comprises a transition metal complex supported on an interpolymer comprising an alpha, beta-unsaturated dicarboxylic acid, anhydride or lower alkyl ester thereof, and one or more monomers copolymerizable therewith which has been treated with a Group IIA halide or alkyl halide. Preferred supports comprise maleic anhydride copolymers which have been treated with a magnesium compound.

Abstract: This invention relates to a new supported catalyst and to the use of this catalyst in a process for the polymerization of alpha-olefins. The catalyst comprises a transition metal complex supported on a planar organosilicon polymer which has been derived from at least one of chrysotile and apophyllite. The support is prepared by the leaching of the metal ions from the mineral and substitution of some of the silanol groups with alkyl silyl groups. Particularly active catalysts can be prepared by treating the planar organosilicon polymer with silicon tetrachloride prior to contacting the polymer with a transition metal complex.

Abstract: A process for polymerizing alpha-olefins in the presence of a Ziegler-type catalyst wherein at least one of dichloroethane, dichloropropane and chlorine gas is added to the process after the polymerization has been initiated. This invention is especially useful when the olefin is propylene and the catalyst is a titanium trichloride complex.

Abstract: Novel block copolymers of acrylonitrile having good gas-barrier and impact-resistance properties are prepared by copolymerizing acrylonitrile and another comonomer, such as methyl acrylate, using an elastomer prepolymer containing free-radical initiator groupings as the copolymerization initiator.