Patents by Inventor Michelle L. Cotter

Michelle L. Cotter 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).

  • Aqueous dispersion polymers
    Patent number: 6020422
    Abstract: Water soluable, aqueous salt solution dispersible polymers and aqueous salt solutions containing dispersed polymers are produced by polymerization of ethylenically unsaturated soluble monomers in an aqueous salt solution in the presence of at least one carbohydrate. The polymers and aqueous salt solutions containing the dispersed polymers are useful for paper making, water clarification and emulsion breaking.
    Type: Grant
    Filed: November 15, 1996
    Date of Patent: February 1, 2000
    Assignee: BetzDearborn Inc.
    Inventors: Edward J. Connors, Michelle L. Cotter, Fu Chen
  • Process for the preparation of aqueous dispersion polymers
    Patent number: 5707533
    Abstract: A process for preparing a water-soluble polymer dispersion is herein provided which is characterized by polymerizing from about 10 to 50 mole percent of a monomer having a formula (II); from about 1 to 50 mole percent of N-alkylacrylamide, N, N-dialkylacrylamide or mixtures thereof; having a formula (III) from about 1 to 70 mole percent acrylamide; and optionally up to about 4 mole percent of a monomer having a formula (I) having a benzyl functionality. The polymerization is carried out in the presence of an aqueous solution of a polyvalent anionic salt which contains (1) a water soluble cationic polymer which is insoluble in the aqueous salt solution and (2) a water soluble cationic polymer which is soluble in the aqueous salt solution.
    Type: Grant
    Filed: February 3, 1997
    Date of Patent: January 13, 1998
    Assignee: BetzDearborn Inc.
    Inventors: Edward J. Connors, Michelle L. Cotter, Fu Chen
  • Process for the preparations of aqueous dispersion polymers
    Patent number: 5696194
    Abstract: A process for preparing a water-soluble polymer dispersion is herein provided which is characterized by polymerizing from about 10 to 50 mole percent of a monomer having a formula (II); from about 1 to 50 mole percent of N-alkylacrylamide, N,N-dialkylacrylamide or mixtures thereof; having a formula (III) from about 1 to 70 mole percent acrylamide; and optionally up to about 4 mole percent of a monomer having a formula (I) having a benzyl functionality. The polymerization is carried out in the presence of an aqueous solution of a polyvalent anionic salt which contains (1) a water soluble cationic polymer which is insoluble in the aqueous salt solution and (2) a water soluble cationic polymer which is soluble in the aqueous salt solution.
    Type: Grant
    Filed: February 3, 1997
    Date of Patent: December 9, 1997
    Assignee: BetzDearborn Inc.
    Inventors: Edward J. Connors, Michelle L. Cotter, Fu Chen
  • Process for the preparation of aqueous dispersion polymers
    Patent number: 5614602
    Abstract: A process for preparing a water-soluble polymer dispersion is herein provided which is characterized by polymerizing from about 10 to 50 mole percent of a monomer having a formula (II); from about 1 to 50 mole percent of N-alkylacrylamide, N,N-dialkylacrylamide or mixtures thereof; having a formula (III) from about 1 to 70 mole percent acrylamide; and optionally up to about 4 mole percent of a monomer having a formula (I) having a benzyl functionality. The polymerization is carried out in the presence of an aqueous solution of a polyvalent anionic salt which contains (1) a water soluble cationic polymer which is insoluble in the aqueous salt solution and (2) a water soluble cationic polymer which is soluble in the aqueous salt solution.
    Type: Grant
    Filed: July 9, 1996
    Date of Patent: March 25, 1997
    Assignee: BetzDearborn Inc.
    Inventors: Edward J. Connors, Michelle L. Cotter, Fu Chen