Abstract: An aqueous copolymer adhesive dispersion having a long pot life and giving highly waterproof bonds, comprising an acid hardener of water-soluble acids having pKs of under 0 and an aqueous dispersion of a pre-crosslinked polyvinyl ester grafted onto polyvinyl alcohol, said polyvinyl ester being an ester of an acid of 1 to 12 carbon atoms and said pre-crosslinking caused by the presence of small amounts of poly-ethylenically-unsaturated compounds in the monomer mixture, as well as the aqueous dispersion and the method for its production.

Abstract: Improved thermoplastic compositions comprising glass fibers blended with polypivalolactone, and a process for producing these compositions.

Abstract: Thickener compositions comprising an emulsion copolymer of vinylacetate monomer and a monoester of an unsaturated dicarboxylic acid monomer, such as the monoester of maleic acid, and a water-miscible organic liquid, are described herein.

Abstract: A particle and method for dispersing additives in a thermoplastic resin. The particle consists of a high concentration of additive material, a thermoplastic rubber, a resin, and modifiers. The method involves forming the particle with a high concentration of additive and adding the particle to a mass of thermoplastic resin.

Abstract: An improved phosphite stabilizer for polymers, especially vinyl chloride polymers and olefin polymers. The phosphite is either a dialkylpentaerythritol diphosphite or a polyalkyl bisphenol-A polyphosphite; the improvement comprises the presence in such phosphite composition of a small proportion of triisopropanolamine.

Abstract: Disclosed are a puncture sealant composition in emulsion for a tubeless pneumatic tire comprising a butyl rubber emulsion, a saturated hydrocarbon polymer emulsion, a crosslinking agent for the rubber and a crosslinking activator. A composition further containing a diene type unsaturated polymer emulsion and/or a natural rubber latex is also disclosed. These compositions are suitable for use in the production of a self-sealing vehicle tire.

Abstract: The invention relates to multichromophoric compounds which have been found to be effective ultraviolet stabilizers. The invention also relates to ultraviolet degradable organic compositions containing a stabilizing amount of the multichromophoric composition to prevent such degradation. These stabilizers are effective in the presence of other additives commonly employed in polymeric compositions including, for example, pigments, colorants, fillers, reinforcing agents and the like. These ultraviolet stabilizers may also be incorporated into the organic compositions in the polymer melt or dissolved in the polymer dope, coated on the exterior of the molded article, film or extruded fiber.

Abstract: Aqueous adhesive emulsions based on aqueous emulsion copolymers of vinyl esters such as vinyl acetate, especially with ethylene, are provided with improved solvent insolubility and adhesion characteristics in the presence of hydroxy functional protective colloid which is present during the copolymerization, by the inclusion in the copolymer of a monoethylenic carbamate, especially allyl carbamate.

Abstract: Aqueous gels of water-soluble polymers and copolymers of extremely high molecular weight as measured by their intrinsic viscosities are prepared by the irradiation, under controlled conditions of concentration, radiation intensity, and total dose, of aqueous solutions of selected nitrogen-containing vinyl monomers separately, in admixture with each other or in admixture with non-nitrogenous vinyl monomers. The polymers may be recovered from the gels in conventional manner. The polymers and the gels are useful as flocculating and thickening agents in aqueous media.

Abstract: Anionic water-in-oil emulsions of polyacrylamide are readily inverted in hard water for dissolution of the polymer therein by effecting inversion at a dilution such that insufficient hardness is present to cause emulsion breaking.

Abstract: The invention relates to a frothing method for mixing a liquid propellant having a low boiling point with further components for the production of foamed material, more particularly polyurethane. The invention also relates to an apparatus for carrying out the method with a mixing head for high pressure mixing of the main components in a mixing chamber. The foam production is carried out in two stages involving a first chamber for receiving and premixing reactive polymeric components, and a second chamber intersected by the first into which the mix components are advanced while the frothing propellant is injected at the intersection. The frothed reactive polymeric mix is then discharged from the second chamber into a suitable mold for forming the finished polymerized product.

Abstract: This invention relates to novel adhesive compositions and laminates produced therefrom, said adhesive comprising a vinyl acetate-acrylate or methacrylate emulsion polymer with a content of an ethylenically unsaturated acid ester of a polyol containing at least three hydroxyl groups, said ester should also include at least three unsaturated acid moieties.

Abstract: An aqueous adhesion assistant or binder dispersion for use in the production of composite bodies by vulcanizing a vulcanizable rubber composition on a substrate which is stable under vulcanization conditions comprising water and at least one dispersing agent and a solids content of from 20% to 50% by weight of a solids composition of per(a) 100 parts by weight of an organic oligomeric to polymeric film-former,(b) from 5 to 100 parts by weight of an aromatic poly-C-nitroso compound,(c) from 5 to 100 parts by weight of a phosphorus-containing compound selected from the group consisting of an organic phosphonic acid, a compound producing an organic phosphonic acid under vulcanization conditions, a phosphoric acid partial ester, and a compound producing a phosphoric acid partial ester under vulcanization conditions, and(d) from 0 to 200 parts by weight of customary fillers and pigments having an improving effect on the vulcanized bond; as well as the method of bonding rubbers to solid substrates employing said aq

Abstract: Water based printing ink for vinyl flooring. The ink is a blend of acrylic and vinyl latexes and contains coalescing agent as well as surfactant and pigment.

Abstract: Synthetic polymer latexes, particularly acrylic latexes, containing polyoxyhydrocarbylene dihydrocarbyl ethers such as diethylene glycol n-butyl tert-butyl ether as coalescing agents exhibit enhanced film forming characteristics and improved physical properties.

Abstract: Latex is stabilized by the addition of small amounts of salts of maleic anhydride/alpha-methylstyrene adduct and maleic anhydride/alpha-methylstyrene dimer adduct. The adduct salt is incorporated into the emulsifier solution used in the emulsion polymerization system.

Abstract: A pressure-sensitive adhesive comprising, by weight, (A) an aqueous dispersion of a copolymer of (1) at least one alkyl acrylate, (2) at least one .alpha.,.beta.-unsaturated carboxylic acid or hydroxyl group-containing acrylate or methacrylate or the like and (3) at least one vinylic or vinylidenic copolymerizable monomer, and (B) an aqueous dispersion of an ethylene-vinyl acetate copolymer.

Abstract: Copolymer emulsions comprising (1) an .alpha.,.beta.-unsaturated carboxylic acid and (2) methyl acrylate are useful as thickening agents, particularly in acrylic polymer latices.

Abstract: In an acidic aqueous coating composition containing dispersed particles of an organic coating-forming material and of the type which forms on a metallic surface immersed therein an organic coating which increases in thickness the longer the surface is immersed in the composition, the improvement comprising including in said composition an acid inhibitor thereby improving the quality of said coating, including reducing or preventing the tendency of said composition to form coatings which contain pinholes or blisters.

Abstract: This invention deals with porous, substantially foam-free composite material of grainy solid material particles of a certain grain size, which is solidified with a binder mixture of isocyanate-group-containing prepolymers, water, and possibly auxiliaries, and the manufacture and application of such products.