Abstract: Methods are provided for synthesizing a polymer product. The methods include combining an ultraviolet light-activated polymerization initiator and a nitrogen-containing vinyl monomer to form a reaction mixture. The initiator is radicalized only by exposure to ultraviolet light. The reaction mixture has an active content of reactive components present in an amount of at least about 20 weight % based on a total weight of the reaction mixture. The methods further include exposing the reaction mixture to ultraviolet light produced from an ultraviolet light source to form a polymer product. The polymer product includes a reaction product of the initiator and the nitrogen-containing vinyl monomer. The polymer product is comminutable to form discrete granules of the polymer product.

Abstract: The present disclosure generally relates to dewatering aqueous sludge that is produced by waste water or sewage treatment facilities such as from municipal and industrial processes. The method includes treating an aqueous sludge with a cationic polyacrylamide polymer comprising the reaction product of: acrylyl monomer(s) comprising a nonionic amide; cationic monomer(s); and vinyl monomer(s).

Abstract: The present compositions and methods relate to an interpenetrating polymer network (IPN) composition comprising a two-step polymerization. In a first step, a first inverse water-in-oil emulsion polymer is prepared and wherein a second inverse water-in-oil emulsion is combined with the first inverse water-in-oil emulsion and wherein polymerization of the second inverse water-in-oil emulsion is initiated in-situ with the first inverse water-in-oil emulsion polymer, producing a second inverse water-in-oil emulsion polymer that is physically interlaced or cross-linked with the first inverse water-in-oil emulsion creating an interpenetrating polymer network (IPN) composition.

Abstract: Methods for manufacturing a polymer dispersion, polymer dispersions, and their use are provided herein. The methods of manufacturing the polymer dispersion comprise the steps of providing a reaction mixture in an aqueous medium comprising a polymeric dispersant and a monomer composition comprising radically polymerizable monomers, and subjecting the monomer composition in the reaction mixture to a radical polymerization to synthesize a dispersed polymer so as to form the polymer dispersion, wherein the weight average molecular weight of the dispersed polymer is in a specified narrow range. These polymer dispersions are designated as water-in-water (w/w) polymer dispersions.

Abstract: Methods for manufacturing a polymer dispersion, polymer dispersions, and their use are provided herein. The methods of manufacturing the polymer dispersion comprise the steps of providing a reaction mixture in an aqueous medium comprising a polymeric dispersant and a monomer composition comprising radically polymerizable monomers, and subjecting the monomer composition in the reaction mixture to a radical polymerization to synthesize a dispersed polymer so as to form the polymer dispersion, wherein the radical polymerization is performed in presence of a metal scavenger system comprising a metal scavenger and an acid. These polymer dispersions are designated as water-in-water (w/w) polymer dispersions.

Abstract: Methods for manufacturing a polymer dispersion, polymer dispersions, and their use are provided herein. The methods of manufacturing the polymer dispersion comprise the steps of providing a reaction mixture in an aqueous medium comprising a polymeric dispersant and a monomer composition comprising radically polymerizable monomers, and subjecting the monomer composition in the reaction mixture to a radical polymerization to synthesize a dispersed polymer so as to form the polymer dispersion, wherein step of subjecting the monomer composition is performed under controlled adiabatic conditions. These polymer dispersions are designated as water-in-water (w/w) polymer dispersions.

Abstract: Methods for manufacturing a polymer dispersion, polymer dispersions, and their use are provided herein. The methods of manufacturing the polymer dispersion comprise the steps of providing a reaction mixture in an aqueous medium comprising a polymeric dispersant and a monomer composition comprising radically polymerizable monomers, and subjecting the monomer composition in the reaction mixture to a radical polymerization to synthesize a dispersed polymer so as to form the polymer dispersion, wherein the ratio of the polymeric dispersant to the dispersed polymer in the polymer dispersion is in a specified narrow range. These polymer dispersions are designated as water-in-water (w/w) polymer dispersions.

Abstract: The present disclosure generally relates to dewatering aqueous sludge that is produced by waste water or sewage treatment facilities such as from municipal and industrial processes. The method includes treating an aqueous sludge with a cationic polyacrylamide terpolymer that includes an acrylamide; a first cationic monomer and a second cationic monomer that is different from the first monomer, and dewatering the treated aqueous sludge.

Abstract: Provided is a method of dewatering aqueous sludge that is produced by waste water or sewage treatment facilities, such as from industrial and municipal processes. The method includes treating an aqueous sludge with an associative and branching or cross-linked inverse emulsion cationic polymer, wherein the associative properties of the cationic polymer are provided by an emulsification surfactant(s) chosen from diblock and triblock polymeric surfactants and/or cross-linking agents.

Abstract: The current process relates to an adiabatic gel polymerization process for the production of water-soluble polyelectrolytes using UV LED modules or a combination of a UV tube light sources and UV LED modules wherein the resulting polymer has increased throughput, lower residual monomer content as well as lower insolubles compared with current photoinitiated polymerization processes.

Abstract: The current process relates to an adiabatic gel polymerization process for the production of water-soluble polyelectrolytes using UV LED modules or a combination of a UV tube light sources and UV LED modules wherein the resulting polymer has increased throughput, lower residual monomer content as well as lower insolubles compared with current photoinitiated polymerization processes.

Abstract: Sheet-like structures obtainable by thermal curing and having a crosslinked cholesteric liquid crystalline ordered structure are suitable, for example, for decorative coatings, for producing security marks, pigmentary particles, polarizers, color filters and IR reflectors.