Cytec Technology Corporation

American Cyanamid Company

Kemira Oyj

Other

Sun-Yi Huang

Joseph J Kozakiewicz

Louis Rosati

Raymond S Farinato

James V Cicchiello

Richard F Rice

Henry M Masias

David L Dauplaise

Joseph M Schmitt

David A Mortimer

Robert J Jackson

Jorge Eduardo Adams Pena

Jorge Adams

Henry Masias

Raymond Farinato

Anionic polymers comprising. organic counterfoils exhibit improved biodegradability. The anionic polymers are useful as antiscalants. The biodegradability of an anionic polymer may be improved by replacing inorganic counterions with organic counterions.

Biodegradability of antiscalant formulations

This invention relates to a method of achieving a solid-liquid separation of an oil-based mud comprising the step of contacting said oil-based mud with a water-in-oil emulsion comprising a polymer derived from at least one water-soluble monomer, where the polymer is not dissolved prior to contact with the oil-based mud, mixing the water-in-oil emulsion and the oil-based mud and separating the solid phase from the liquid phase in the oil-based mud. In addition, this invention also relates to a composition comprising an oil-based mud with a water-in-oil emulsion comprising a polymer derived from at least one water-soluble monomer, wherein the polymer is not dissolved prior to contact with the oil-based mud.

Solid-liquid separation of oil-based muds

Aqueous dispersions of cationic water-soluble polymers are provided, as well as processes for making and methods of using the same.

Aqueous dispersions

Aqueous dispersions of cationic water-soluble polymers are provided, as well as processes for making and methods of using the same. The cationic polymers contain anionic recurring units in amounts that encourage the formation of the aqueous dispersion and/or advantageously reduce the bulk viscosity of the aqueous dispersion.

Mannich (alk)acrylamide microparticles are produced at high solids contents without a significant increase in bulk viscosity by inverse microemulsion polymerization and provide superior dewatering characteristics.

Emulsified mannich acrylamide polymers

Process for preparing aqueous dispersions

Multimodal emulsions comprising a blend of at least one polymeric microemulsion provide for high solids and low bulk viscosity. Convenient and versitale processes for preparing multimodal emulsions are also provided. Mannich (alk)acrylamide polymeric microemulsions are among the numerous different polymeric microemulsions which may be used to prepare the multimodal emulsions.

Multimodal emulsions and processes for preparing multimodal emulsions

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Stamford, CT, United States of America

Sun-Yi Huang