Patents by Inventor David Witiak

David Witiak has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6489287
    Abstract: The invention provides a detergent formulations comprising at least one water soluble polymer, or salt thereof, bearing at least one phosphonate group. Suitable polymers comprise: wherein X is H, Na, K or A; and A is a polymer, copolymer, or water soluble salt thereof, comprising, one or more of the following monomers in polymerized form: carboxylic acids of the formula wherein R1 is H, OH, C1-C9 alkyl or alkoxy or acetoxy or acetate R2 is H, C1-C3 alkyl or alkoxy, COOR3 R3 is H, Na, K or C1-C10 alkyl; hydroxypropyl acrylate, propyl methacrylate, 2-acrylamido-2-propane sulphonic acid, sodium styrene sulphonate, sodium allylsulphonate, sodium methyl sulphonate, vinyl sulphonic acid, and salts thereof; acrylamide, methacrylamide, tert-butylacrylamide, (meth)acrylonitrile, styrene, vinyl acetate allyloxy-2-hydroxypropyl sulphonate and dialkylacrylamide.
    Type: Grant
    Filed: June 22, 1999
    Date of Patent: December 3, 2002
    Assignee: Rohm and Haas Company
    Inventors: Francois Gauthier, Yves Duccini, David Witiak, Barry Weinstein, Raymond Porter
  • Patent number: 6335404
    Abstract: 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.
    Type: Grant
    Filed: April 5, 1994
    Date of Patent: January 1, 2002
    Assignee: Rohm and Haas Company
    Inventors: Thomas Cleveland Kirk, David Witiak
  • Patent number: 5601723
    Abstract: 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.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: February 11, 1997
    Assignee: Rohm and Haas Company
    Inventors: Thomas C. Kirk, David Witiak
  • Patent number: 5597509
    Abstract: 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.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: January 28, 1997
    Assignee: Rohm and Haas Company
    Inventors: Thomas C. Kirk, David Witiak
  • Patent number: 4529773
    Abstract: 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.
    Type: Grant
    Filed: March 17, 1982
    Date of Patent: July 16, 1985
    Inventors: David Witiak, Jean Dupre
  • Patent number: 4435539
    Abstract: 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.
    Type: Grant
    Filed: July 29, 1982
    Date of Patent: March 6, 1984
    Assignee: Rohm and Haas Company
    Inventor: David Witiak
  • Patent number: 4399255
    Abstract: 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.
    Type: Grant
    Filed: September 10, 1982
    Date of Patent: August 16, 1983
    Assignees: Avtex Fibers Inc., Rohm & Haas Co.
    Inventors: Frederick R. Smith, Walter W. Toy, David Witiak
  • Patent number: 4094927
    Abstract: 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.
    Type: Grant
    Filed: February 14, 1977
    Date of Patent: June 13, 1978
    Assignee: Rohm and Haas Company
    Inventors: William H. Harrop, David Witiak, Russell A. LaBar