Abstract: A cosmetic composition for rejuvenating the appearance of skin with reduced or minimal potential for skin irritation, in the form of a lotion, creme, solution or gel, or applied onto a carrier, includes about 0.5 to 50 wt. % in an aqueous, alcoholic or aqueous-alcoholic solution of a solvent-free, high molecular weight terpolymer of methyl vinyl ether-maleic anhydride-isobutylene, said composition having a pH of 1.5 to 5.

Abstract: A process of making a cosmetically or pharmaceutically-acceptable emulsion or gel composition which comprises: (a) heating a reaction mixture comprising, by weight, about 5-70% of a vinyl monomer in about 30-95% of an oil as solvent, wherein said oil is selected from the group consisting of a silicone oil, a mineral oil and a water-insoluble organic ester and a free radical initiator, optionally in the presence of a crosslinking agent and/or an oil soluble surfactant, with agitation, under an inert gas, at about 40-150° C., wherein the oil is present in an amount sufficient to keep the resultant vinyl polymer in a stirrable state until the end of the polymerization, (b) adding a surfactant, if a suitable surfactant was not present during polymerization, and, (c) then adding water to form an oil-in-water, a water-in-oil or a water-in-oil-in-water emulsion or gel, in a volume ratio of oil-in-water of 30:70 to 10:90, or water-in-oil of 90:10 to 30:70.

Abstract: A non-aqueous, heterogeneous polymerization process comprises heating a reaction mixture of about 5-70%, preferably 10-30%, by weight, of a vinyl monomer in an oil as solvent, and a free radical initiator, optionally in the presence of a crosslinking agent and/or a surfactant, wherein the oil solvent is present in an amount sufficient to keep the resultant polymer in a stirrable state throughout the polymerization. The polymer reaction product is capable of forming a uniform emulsion or gel upon addition of water thereto.

Abstract: Solvent-free, free-flowing, fine white powders of a copolymer of maleic anhydride and a C1-C4 alkyl vinyl ether having a specific viscosity of about 0.5 to about 5 (1% wt/v in methyl ethyl ketone, 25° C.) and substantially without residue, odor or taste. A solvent-free process of polymerizing the monomers in the presence of 0.01 to 1.9% acetaldehyde also is described.

Abstract: Solvent-free, fine white powders of a copolymer of maleic anhydride and a C1-C4 alkyl vinyl ether substantially free of poly(alkyl vinyl ether) homopolymer.

Abstract: Solvent-free, fine white powders of high molecular weight copolymers of maleic anhydride and C1-C4 alkyl vinyl ethers, which are particularly useful as starting materials for denture adhesives. A solvent-free process for making such copolymers also is described.

Abstract: A cosmetically active oil-in-water (o/w) or water-in-oil (w/o) emulsion, for topical applications comprising (a) the reaction product of a non-aqueous, heterogeneous polymerization of a liquid reaction mixture containing between about 5 and about 70%, preferably 10-40%, by weight, of N-vinylamide monomer in an oil solvent, a free radical initiator, between about 0.1 and about 2.5% by weight of a crosslinking agent and optionally a surfactant, (b) water sufficient to form said emulsion, (c) a cosmetically active hair and/or skin treating chemical or chemical composition and optionally (d) a surfactant.

Abstract: This invention relates to a mouthwash composition including a solvent-free, high molecular weight (>1,500,000) uncrosslinked terpolymer of maleic anhydride, a C.sub.1 -C.sub.4 alkyl vinyl ether and isobutylene.

Abstract: A controlled-release, drug-delivery, emulsion composition for topical application comprising (a) the reaction product of the non-aqueous, heterogeneous polymerization of a reaction mixture of about 5-70%, preferably 10-30%, by weight, of a vinyl monomer in an oil as solvent, and a free radical initiator, optionally in the presence of a crosslinking agent and/or a surfactant, wherein the oil solvent is present in an amount sufficient to keep the resultant polymer in a stirrable state throughout the polymerization, (b) water, (c) a surfactant and (d) a pharmaceutical medicament.

Abstract: This invention relates to a dentifrice composition including a solvent-free, high molecular weight (>1,500,000) uncrosslinked terpolymer of maleic anhydride, a C.sub.1 -C.sub.4 alkyl vinyl ether and isobutylene.

Abstract: This invention relates to high molecular weight terpolymers of maleic anhydride, C.sub.1 -C.sub.4 alkyl vinyl ethers and isobutylene, and to a solvent-free process for making such terpolymers, which are particularly useful as starting materials for denture adhesives.

Abstract: This invention relates to high molecular weight terpolymers of maleic anhydride, C.sub.1 -C.sub.4 alkyl vinyl ethers and isobutylene, and to a solvent-free process for making such terpolymers, which are particularly useful as starting materials for denture adhesives.

Abstract: Denture adhesive including a solvent-free, high molecular weight terpolymer of maleic anhydride, a C.sub.1 -C.sub.4 alkyl vinyl ether and isobutylene.

Abstract: A process of making a mixed salt of a polymer containing an anhydride, acid or ester side groups therein which comprises:(a) forming a reaction mixture of the polymer, mixed salt compounds and water, in a predetermined proportion, as a paste or slurry,(b) reacting and extruding the paste or slurry at a predetermined temperature to form the mixed salt of the polymer, and(c) drying the resultant reaction product.

Abstract: What is provided herein is a colorless, stabilized aqueous solution of a C.sub.1 -C.sub.5 alkyl vinyl ether and maleic acid copolymer which includes about 100 to 1,000 ppm of an additive mixture of (a) about 30-70% by weight of ethylenediaminetetraacetic acid (EDTA) or its salts, such as the disodium, trisodium, tetrasodium or disodium-calcium salts, and (b) about 30-70% by weight of a secondary additive which is an organic antioxidant and/or free radical scavenger selected from t-butylhydroquinone, propyl gallate, butylated hydroxy-anisole (BHA), butylated hydroxy-toluene (BHT), 4-hydroxymethyl-2,6-di-tert-butylphenol, 2,4,5-trihydroxy-butyrophenone (THBP) and N,N-diethylhydroxylamine, said stabilized solution exhibiting a retention of at least about 85-90% of its original viscosity after 3 months. Preferably, the solution is prepared by hydrolyzing the corresponding anhydride in the presence of said additive mixture.

Abstract: A process is described for rendering amino-group polymer solutions substantially odorless. In one embodiment, a solution of the terpolymer of vinyl pyrrolidone, vinyl caprolactam and dimethylaminoethyl methacrylate is treated with 0.1-10% by weight of an acidic compound or an acidic ion-exchange resin to render the solution substantially odorless. Other vinyl pyrrolidone polymer solutions in water and alcohol are treated similarly with equally effective results.

Abstract: A method for forming a water-in-oil emulsion of a water-soluble polymer by emulsion polymerization of the corresponding monomer in the presence of an initiator and an emulsifier which is a polysiloxane polyalkylene polyether copolymer. The polymerization of acidic monomer can be carried out without complete neutralization of the monomer beforehand and without adverse effects on the emulsion stability. The water-in-oil product emulsion is easily inverted to a stable oil-in-water emulsion.

Abstract: What is provided herein is a stabilized aqueous solution of a C.sub.1 -C.sub.5 alkyl vinyl ether and maleic acid copolymer which includes about 10-500 ppm of an inorganic reducing agent as a stabilizing additive, said reducing agent being effective to prevent oxygen from the air and peroxides contained in polymer system from degrading the copolymer. Preferably the reducing agent is sulfur dioxide and salts derived from sulfur dioxide and alkali metals such as, sodium or potassium bisulfite, sodium or potassium metabisulfite, sodium or potassium thiosulfite, or sodium or potassium sulfite.

Abstract: What is described herein is a cationic polymerization process for the production of methyl vinyl ether homopolymers which have a relatively high molecular weight and a rather narrow molecular weight distribution. Polymerization is carried out under pressure of an added inert gas so the methyl vinyl ether vapor is effectively absorbed into the liquid phase during the polymerization.

Abstract: According to this invention, there is provided a denture adhesive which is a mixed partial salt of a copolymer of maleic anhydride and acrylic acid (or methacrylic acid), optionally including a C.sub.1 -C.sub.4 alkyl vinyl ether, having a weight average molecular weight of about 30,000 to 400,000, preferably about 50,000 to 350,000. The copolymer comprises about 10 to 70 mole percent, preferably 20 to 60 mole percent, of maleic anhydride, about 30 to 90 mole percent, preferably 40 to 80 percent, of acrylic acid (or methacrylic acid), and 0 to 25 mole percent of a C.sub.1 -C.sub.4 alkyl vinyl ether.