Abstract: An aqueous adhesive composition for bonding nitrile rubber. The adhesive composition contains a chlorosulfonated polyethylene latex, a polyhydroxy phenolic resin copolymer, and a high molecular weight aidehyde polymer. The adhesive composition exhibits an unusual affinity for nitrile rubber and exhibits excellent adhesive performance as a single-coat formulation. The adhesive composition withstands high temperature bonding conditions and minimizes the utilization of volatile organic solvents.

Abstract: A fortified pressure sensitive adhesive is comprised of a polymerization product of, or a polymeric composition derived from a formulation comprising at least one non-tertiary acrylic acid alkyl ester formed from a primary or secondary alcohol, an organofunctional silane, wherein said organofunctional silane is present in said formulation in an amount sufficient to increase the adhesive characteristics of the pressure sensitive adhesive, and an ethylenically-unsaturated dimer, wherein the ethylenically-unsaturated dimer is present in the formulation in an amount sufficient to increase the adhesive characteristics of the pressure sensitive adhesive.

Abstract: Disclosed is a propylene-ethylene/butene block copolymer, comprising a polybutene component block-copolymerized with a propylene-ethylene random copolymer component, or with a polypropylene component and a propylene-ethylene random copolymer component, the content of the polybutene component being 0.1 to 10% by weight, the total content of the propylene-ethylene random copolymer component and the polypropylene component being 99.9 to 90% by weight and the content of the polypropylene component being 0 to 30% by weight, wherein the propylene-ethylene random copolymer component is composed of a copolymer comprising 15 to 80 mole % of monomer units based on ethylene and 85 to 20 mole % of monomer units based on propylene, and said block copolymer is a powder having a high molecular weight.

Abstract: This invention is a process for producing stable polymer emulsions and latexes with an average particle size of less than one micron. The polymers are block copolymers of conjugated dienes and vinyl aromatic hydrocarbons which may or may not contain polar functionality. The process comprises making a polymer cement of the polymer and a blend of a solvent for the polymer and a cosolvent(s), emulsifying the polymer cement by adding it to an aqueous phase containing at least one surfactant and removing the solvent, cosolvent and excess water.

Abstract: Propylene is copolymerized with ethylene in solventfree polymerization in two steps where a resinous polymer is produced in the first step and a rubbery polymer is produced in the second step over a Ziegler catalyst whose solid catalyst component comprises a sub-component which is a solid catalyst component for a Ziegler catalyst comprising Ti, Mg and a halogen and which has, in accordance with the present invention, undergone mechanical milling. The solid catalyst components is specified. Less Sticky polymer powder is obtainable.