Rohm and Haas Company

Other

Avtex Fibers Inc.

David Witiak

Thomas Cleveland Kirk

Barry Weinstein

Frederick R Smith

Yves Duccini

Francois Gauthier

Jean Dupre

William H Harrop

Russell A LaBar

Raymond Porter

Walter W Toy

Detergent formulations comprising at least one water soluble polymer, or salt thereof, bearing a phosphonate group

The present invention provides an efficient aqueous polymerization process for preparing a water soluble polymer product having a molecular weight of less than 30,000. The polymer product is formed from about 3 to about 50 weight percent of at least one monoethylenically unsaturated dicarboxylic acid monomer, from about 50 to about 97 weight percent of at least one monoethylenically unsaturated monocarboxylic acid monomer, and from 0 to about 40 weight percent of one or more carboxyl-free monoethylenically unsaturated monomers. The process of the present invention may be run as a batch or continuous process. The process uses at least one chain transfer agent and is conducted at an aqueous solution pH of about 3 or less to keep the molecular weight of the polymer product below 30,000. The polymer product produced by the process of the present invention is useful as an additive in detergents, cleaning formulations, and water circulating systems.

Aqueous process for preparing aqueous weight carboxyl containing polymers

Method of inhibiting scale and corrosion in aqueous systems using low

Aqueous process for preparing low molecular weight polymers and

Alkali-soluble emulsion polymers that have been activated by neutralization to a pH above 6.5, and subsequently acidified in the presence of a surfactant, are useful as thickeners in acidified, surfactant-containing compositions.

Alkali-soluble emulsion polymers in acidic surfactant compositions

Carboxylic acid/hydroxyalkyl ester copolymers of about 100,000-500,000 molecular weight are solubilized and stabilized to render the aqueous solutions thereof resistant to gelation while maintaining the viscosity of the solutions at manageable levels, by partially neutralizing the copolymers. Typical copolymers contain (a) acrylic or methacrylic acid and (b) hydroxyethyl or hydroxypropyl acrylate or methacrylate, in a monomer weight ratio (a:b) of 95:5 to 50:50, and are neutralized 25-75%. The copolymers are useful as viscose dope modifiers in the production of high fluid holding rayon alloy fibers.

Stabilized polymer compositions

Alloy rayon fiber of regenerated cellulose and an at least partially neutralized copolymer of acrylic or methacrylic acid and a comonomer selected from an hydroxyalkyl (C.sub.2 -C.sub.6) ester of such acid or a styrenic monomer. The copolymer is present in an amount effective to increase the fluid holding capacity of the fiber. Masses of the fibers are useful as surgical dressings, tampons and other fluid-absorbing articles.

Alloy rayon fibers of regenerated cellulose and copolymeric acrylic acid

An acrylic polymer of one or more C.sub.10 to C.sub.22 methacrylates and one or more acrylic acids selected from the group consisting of acrylic acid and methacrylic acid useful as a modifier for polyolefins, the composition comprising polyolefin and a minor amount of the modifier, and a process for improving processability of polyolefin comprising blending therewith the above mentioned acrylic polymer.

Process for improving the processability of polyolefins, improved

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Yardley, PA, United States of America

David Witiak