Nalco Company

Ondeo Nalco Company

Nalco Chemical Company

Angela P Zagala

Cathy C Johnson

Michael Robert St John

Ananthasubramanian Sivakumar

John W Sparapany

Tracey M Guddendorf

Richard P Cardile

Jane B Wong Shing

Zhiyi Zhang

Wesley Lamar Whipple

Chidambaram Maltesh

Alessandra Gerli

Cathy C Doucette

Xavier S Cardoso

Przem Pruszynski

Wesley L Whipple

Tracey Guddendorf

A method of enhancing the dewatering of a paper sheet on a paper machine comprising adding to the paper sheet about 0.05 lb/ton to about 15 lb/ton, based on dry fiber, of one or more aldehyde functionalized polymers comprising amino or amido groups wherein at least about 15 mole percent of the amino or amido groups are functionalized by reacting with one or more aldehydes and wherein the aldehyde functionalized polymers have a molecular weight of at least about 100,000.

Method of using aldehyde-functionalized polymers to enhance paper machine dewatering

A composition for enhancing the dewatering of a paper sheet on a paper machine and a method for using the composition is disclosed. The composition comprising one or more aldehyde-functionalized polymers comprising amino or amido groups wherein at least about 15 mole percent of the amino or amido groups are functionalized by reacting with one or more aldehydes and wherein the aldehyde functionalized polymers have a molecular weight of at least about 100,000. The method comprising adding the composition to the paper machine at a dosage of about 0.05 lb/ton to about 15 lb/ton, based on dry fiber.

Aldehyde-functionalized polymers

A method of preparing a modified diallyl-N,N-disubstituted ammonium halide polymer and use of the polymer in combination with one or more high molecular weight, water soluble cationic, anionic, nonionic, zwitterionic or amphoteric polymers for increasing retention and drainage in a papermaking furnish.

Method of preparing modified diallyl-N,N-disubstituted ammonium halide polymers

This invention is directed to structurally-modified water-soluble polymers prepared by initiating polymerization of an aqueous solution of monomers under free radical polymerization conditions to form a polymer solution and adding at least one structural modifier to the polymer solution after at least 30% polymerization of the monomers has occurred, and to use of the water-soluble cross-linked polymers as flocculating agents.

Structurally-modified polymer flocculants

This invention is directed to a method of improving retention and drainage performance in a papermaking process comprising adding to the furnish an effective amount of a low molecular weight water-soluble cationic dispersion polymer prepared by polymerizing one or more cationic monomers and one or more nonionic monomers and one or more chain transfer agents under free radical forming conditions in an aqueous solution of an anionic salt in the presence of a stabilizer polymer, wherein the cationic dispersion has a cationic charge of from about 10 mole percent to about 80 mole percent and an RSV of from about 0.2 dl/g to about 6 dl/g.

Method of improving retention and drainage in a papermaking process using low molecular weight cationic dispersion polymers

This invention is directed to a method of clarifying water comprising adding to the water an effective clarifying amount of a low molecular weight water-soluble cationic dispersion polymer prepared by polymerizing one or more cationic monomers and one or more nonionic monomers and one or more chain transfer agents under free radical forming conditions in an aqueous solution of an anionic salt in the presence of a stabilizer polymer, wherein the cationic dispersion has a cationic charge of from about 1.0 mole percent to about 75 mole percent and an RSV of from about 0.2 dl/g to about 6 dl/g.

Method of clarifying water using low molecular weight cationic dispersion polymers

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Naperville, IL, United States of America

Angela P Zagala