Kathleen M Hughes

US Patent:

20060235131, Oct 19, 2006

Filed:

Feb 16, 2006

Appl. No.:

11/355836

Inventors:

Kathleen Hughes - Blue Bell PA, US
Alfred Schultz - Maple Glen PA, US

International Classification:

C08L 9/00

US Classification:

524460000, 524458000

Abstract:

A process for preparing aqueous polymer dispersions is described comprising the steps: (a) polymerizing at least one ethylenically unsaturated monomer having one or more ethylenically unsaturated groups and/or at least one ethylenically unsaturated surfactant monomer by free-radical aqueous emulsion polymerization to provide a first polymer; and (b) further polymerizing, in one or more successive polymerization stages, one or more monomers selected from ethylenically unsaturated monomers and/or ethylenically unsaturated surfactant monomers by free-radical polymerization in aqueous dispersion of the first polymer.

US Patent:

45475563, Oct 15, 1985

Filed:

Oct 25, 1982

Appl. No.:

6/436258

Inventors:

Kathleen A. Hughes - Plymouth Meeting PA
Graham Swift - Blue Bell PA

Assignee:

Rohm and Haas Company - Philadelphia PA

International Classification:

C09D 381
C09D 540
C09D 502
C08L 9100

US Classification:

526 75

Abstract:

A composition comprising a water reducible vinyl additional polymer having pendant unsaturated air drying fatty acid ester groups and additional pendant groups selected from secondary amine, tertiary amine, and combinations thereof are disclosed, as are methods for preparing such polymers, solvent coatings, water reducible coatings, and electrodeposition coatings containing such polymers.

US Patent:

50718959, Dec 10, 1991

Filed:

Jan 18, 1990

Appl. No.:

7/467073

Inventors:

Kathleen A. Hughes - Blue Bell PA
Graham Swift - Blue Bell PA

Assignee:

Rohm and Haas Company - Philadelphia PA

International Classification:

C08F 238

US Classification:

526210

Abstract:

A process to prepare telomers of acrylic acid with a functional terminal group through use of selected secondary alcohol chain transfer agents. Telomers of acrylic acid containing a functional terminal group with a primary hydroxyl or a 6-12 carbon moiety.

US Patent:

54202116, May 30, 1995

Filed:

Mar 18, 1994

Appl. No.:

8/210524

Inventors:

Kathleen A. Hughes - Blue Bell PA
Graham Swift - Blue Bell PA

Assignee:

Rohm and Haas Company - Philadelphia PA

International Classification:

C11D 337
C23F 11173

US Classification:

525404

Abstract:

This invention relates to a novel class of biodegradable water-soluble graff copolymers having building, anti-filming, dispersing and threshold crystal inhibiting properties comprising (a) an acid functional monomer and optionally (b) other water-soluble, monoethylenically unsaturated monomers copolymerizable with (a) grafted to a biodegradable substrate comprising polyalkylene oxides and/or polyalkoxylated materials.

US Patent:

50773615, Dec 31, 1991

Filed:

Jun 26, 1989

Appl. No.:

7/371467

Inventors:

Kathleen A. Hughes - Blue Bell PA
Graham Swift - Blue Bell PA

Assignee:

Rohm and Haas Company - Philadelphia PA

International Classification:

C08F 238

US Classification:

526233

Abstract:

A process to efficiently utilize the chain transfer agent hypophosphorous acid or salts in the preparation of low moelcular weight polycarboxylate polymers comprising employing in process neutralization of the carboxylic acid monomers. A low molecular weight polycarboxylate polymer containing phosphinate and phosphonate functional groups where less than 20% of the phosphorus is present in inorganic non polymeric compounds.

US Patent:

51009803, Mar 31, 1992

Filed:

Mar 27, 1991

Appl. No.:

7/676040

Inventors:

Kathleen A. Hughes - Blue Bell PA
Graham Swift - Blue Bell PA

Assignee:

Rohm and Haas Company - Philadelphia PA

International Classification:

C08F 410
C08F22206

US Classification:

526 91

Abstract:

This invention relates to copolymers containing as copolymerized monomer units aliphatic monoethylenically unsaturated dicarboxylic acids such as maleic acid, monoethylenically unsaturated monocarboxylic acids such as acrylic acid and carboxyl-free monoethylenically unsaturated monomers such as alkyl esters of acrylic acid. This invention particularly relates to the use of low levels of copper ions in an aqueous polymerization process to promote copolymerization of the above-mentioned monomers at high conversion while maintaining and improving molecular weight control. These copolymers are useful primarily as antiscalants, dispersants, hard surface cleaners, detergent builders and incrustation inhibitors.

US Patent:

52235920, Jun 29, 1993

Filed:

Mar 27, 1991

Appl. No.:

7/676056

Inventors:

Kathleen A. Hughes - Blue Bell PA
Graham Swift - Blue Bell PA

Assignee:

Rohm and Haas Company - Philadelphia PA

International Classification:

C08F13004
C08F12202

US Classification:

526240

Abstract:

Polymers of itaconic acid are formed at high conversion by adding completely neutralized monomer solution and initiator solution to a vessel initially containing water at a temperature sufficient for polymerization. These polymers are biodegradable and are most useful as detergent additives, scale inhibitors and removers, sequesterants, yarn sizers, deflocculating agents, de-inking agents, suspending agents and dispersing agents.

US Patent:

54018072, Mar 28, 1995

Filed:

Oct 8, 1992

Appl. No.:

7/958064

Inventors:

Kathleen A. Hughes - Blue Bell PA
Graham Swift - Blue Bell PA

Assignee:

Rohm and Haas Company - Philadelphia PA

International Classification:

C08G 8102
C08G 8100

US Classification:

5253275

Abstract:

A method has been discovered for generating free radicals at saturated carbon atoms on the backbone of acrylate polymers or copolymers. This method is useful for combining at least two polymer chains at the free radical sites on each polymer chain to form a polymer or copolymer product with increased molecular weight and a controlled degree of branching. The polymers and copolymers produced by this process are useful as antiscalants, dispersants, incrustation inhibitors and superabsorbants. They are particularly useful in detergent and cleaning applications.