Abstract: The present invention relates to a novel process for the production of a water soluble polymer dispersion from vinylamide monomers, and, more particularly, polymers formed from N-vinylformamide monomers.

Abstract: The present invention relates to a novel process for the production of a water soluble polymer dispersion from vinylamide monomers, and, more particularly, polymers formed from N-vinylformamide monomers.

Abstract: The present invention relates to a novel process for the production of a water soluble polymer dispersion from vinylamide monomers, and, more particularly, polymers formed from N-vinylformamide monomers.

Abstract: The invention is a water-soluble N,N-diallyl-N-alkyl-N-(sulfoalkyl) ammonium betaine containing copolymer, wherein said copolymer is formed from the polymerization of an N,N-diallyl-N-alkyl-N-(sulfoalkyl) ammonium betaine of the formula:  wherein R is selected from the group consisting of alkyl and aryl groups, and R1 is selected from the group consisting of alkyl groups, aryl groups, and alkylaryl groups,  and an anionic monomer, and  the invention is also a method of inhibiting the precipitation and deposition of scale on metal surfaces in contact with industrial cooling waters comprising the addition of an effective, scale-inhibiting amount of a water-soluble N,N-diallyl-N-alkyl-N-(sulfoalkyl) ammonium betaine containing copolymer, wherein said copolymer is formed from the polymerization of a betaine of the formula:  wherein R is selected from the group consisting of alkyl and aryl groups, and R1 is selected from the group consisting of alkyl groups

Abstract: The invention is a water-soluble N,N-diallyl-N-alkyl-N-(sulfoalkyl) ammonium betaine containing copolymer, wherein said copolymer is formed from the polymerization of an N,N-diallyl-N-alkyl-N-(sulfoalkyl) ammonium betaine of the formula: ##STR1## wherein R is selected from the group consisting of alkyl and aryl groups, and R.sub.1 is selected from the group consisting of alkyl groups, aryl groups, and alkylaryl groups, and an anionic monomer.The invention is also a method of inhibiting the precipitation and deposition of scale on metal surfaces in contact with industrial cooling waters comprising the addition of an effective, scale-inhibiting amount of a water-soluble N,N-diallyl-N-alkyl-N-(sulfoalkyl) ammonium betaine containing copolymer, wherein said copolymer is formed from the polymerization of a betaine of the formula: ##STR2## wherein R is selected from the group consisting of alkyl and aryl groups, and R.sub.

Abstract: The invention comprises a process for removing true and apparent color from pulp and paper waste waters. It comprises treating these waste waters with a coagulant and vinylamine polymer. The coagulant is selected from the group consisting of epichlorohydrin-dimethylamine, guanidine-formaldehyde condensation polymers, cyanoguanidine-formaldehyde condensation polymers, urea-formaldehyde condensation polymers, polyethyleneimines, polydiallyldimethylammonium chloride, copolymers of polydiallyldimethylammonium chloride and acrylamide, and ethylenedichloride-ammonia. The vinylamine polymer includes from about 1 to about 100 mole percent vinylamine and from about 1 to about 99 mole percent of at least one monomer selected from the group consisting of amidine vinylformamide, vinyl alcohol, vinyl acetate, vinyl pyrrolidinone and the esters, amides, nitriles and salts of acrylic acid and methacrylic acid.

Abstract: 3-Hydroxy-2-methylene-3-(1-naphthyl)propionic acid, methyl ester and fluorescent water soluble polymers prepared therefrom.

Abstract: An acrylamide co-polymer which contains from between 1-60 mole percent of (2-acrylamido-2-hydroxy ethyl) trialkyl ammonium salt groups. These co-polymers are made by reacting (formylmethyl) trialykl ammonium salts at a pH of at least 9 and a temperature of between 15-80 degrees centigrade.

Abstract: A method of inhibiting corrosion of iron and steel alloys in contact with industrial waters is claimed. The method comprises treating said waters with an effective corrosion inhibiting amount of a water soluble polymer having an average molecular weight ranging from about 2,000 to about 50,000, said polymer containing at least four mole percent of a hydroxamic acid mer unit.

Abstract: A polymer having pendant fluorescent groups is prepared by (trans)amidation of a preformed polymer by reaction with an amine-containing organic fluorescent composition of the Formula III ##STR1## wherein one of R.sub.5 and R.sup.6 may be hydrogen, and wherein within at least one of R.sub.5 and R.sub.6, or within R.sub.5 and R.sub.6 taken together, is an organic fluorescent group wherein the organic fluorescent group includes a polynuclear aromatic ring system. A degree of (trans)amidation derivatization of the polymer is accomplished by heating the admixture of polymer and fluorescent agent for a sufficient period of time.

Abstract: Polymers tagged with pendant fluorescent groups are prepared by the (trans)amidation derivatization of pre-existing polymers having carbonyl-type pendant groups. Polymers having pendant amide groups wherein the amide nitrogen is substituted with fluorescent moieties, prepared by (trans)amidation derivatization, are provided. Polymers having pendant (sulfonated) napthalene moieties substituted to amide nitrogen are provided.

Abstract: A method of removing from and preventing scale from depositing in underground petroleum containing formations and upon equipment used to inject high brine scale forming waters into such formations which comprises treating such waters with a scale inhibiting amount of an acrylic acid polymer which contains from 0-95 mole percent of acrylamide and from 1-30 mole percent of amido C.sub.1 -C.sub.6 alkyl phosphonate groups from the group consisting of:a) Amidomethyl phosphonate groups,b) Alpha-hydroxy-beta-amidoethyl phosphonate groups,c) Alpha-hydroxy-beta-amidoisopropyl phosphonate groups, and,d) Amidopropyl phosphonate groups said polymer having a molecular weight range between 1,000-100,000.

Abstract: A low viscosity drilling fluid and method for stabilizing a downhole shale formation are disclosed. The fluid comprises an aqueous solution of a partialy transamidated hydrolyzed acrylamide copolymer, potassium chloride, a weighting agent and an optional viscosifying agent. The copolymer comprises from about 50 to about 98 mole percent primary amide functionality, from about 0.1 to about 15 mole percent secondary amide functionality and from about 2 to about 50 mole percent of the acrylate salt. The drilling fluid has a density out from about 8 to about 18 pounds per gallon and a viscosity of from about 5 to about 30 centistokes.

Abstract: The invention describes novel amino(lower alkyl)phosphinic acid compounds and their use to modify acrylamide polymers, acrylic acid polymers and acrylamide-acrylic acid co-polymers which produces polymers containing amidoalkylphosphinic acid groups.

Abstract: A method of preventing scale from depositing in underground petroleum-containing formations and upon equipment used to inject into or remove from such formations high brine, scale-forming waters. This method comprises treating such waters with a scale-inhibiting amount of an acrylic acid or acrylamide homopolymer or co-polymer of acrylic acid with acrylamide having a molecular weight within the range of 1,000-50,000 which have been modified to contain up to about 30 mole percent of amido(C.sub.2 -C.sub.6 alkyl)phosphinic acid groups and the alkali metal, ammonium and amine salts thereof.

Abstract: The invention describes acrylamide, acrylic acid, polymers and co-polymers containing phosphinate groups to inhibit scale and corrosion caused by metal surfaces contacting industrial waters.

Abstract: Polymers tagged with pendant fluorescent groups are prepared by the (trans)amidation derivatization of pre-existing polymers having carbonyl-type pendant groups. Polymers having pendant amide groups wherein the amide nitrogen is substituted with fluorescent moieties, prepared by (trans)amidation drrivatization, are provided. Polymers having pendant (sulfonated) napthalene moieties substituted to amide nitrogen are provided.

Abstract: Polyacrylamide is reacted with formaldehyde and bisulfite at a temperture of at least about 100.degree. C. and at an initial reaction mixture pH of less than about 12, preferably about 3 to about 8, to produce sulfomethylpolyacrylamide.

Abstract: The preparation of polymers which contain pendant hydrophobic groups or a mixture of both pendant hydrophobic and alkoxylated groups is accomplished by reacting a preexisting polymer having pendant acid amide and/or carboxylic groups with a primary or secondary amine in a substantially homogenous reaction mixture, the amine reactant including the desired hydrophobic and alkoxylated radicals. A unique polymer, having both pendant hydrophobic and alkoxylated groups, is provided.

Abstract: The preparation of polymers which contain pendant hydrophobic groups or a mixture of both pendant hydrophobic and alkoxylated groups is accomplished by reacting a preexisting polymer having pendant acid amide and/or carboxylic groups with a primary or secondary amine in a substantially homogenous reaction mixture, the amine reactant including the desired hydrophobic and alkoxylated radicals. A unique polymer, having both pendant hydrophobic and alkoxylated groups, is provided.