Patents by Inventor Donald I. Prettypaul

Donald I. Prettypaul 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: 6369180
    Abstract: A process of making a homopolymer of vinyl caprolactam (VCL), and a copolymer with dimethylaminopropyl methacrylamide (DMAPMA), optionally including with one or more polymerizable monomers (X), in the composition range, by weight, VCL 99 to 30%, DMAPMA 1-70% and monomer X 0-30%, respectively, by suspension polymerization in an aqueous/alcoholic solvent medium, without requiring a protective colloid, which comprises charging vinyl caprolactam in an aqueous/alcoholic solvent mixture, wherein the weight ratio of alcohol to total monomers is ⅙ to 3, and if present, forming a solution of DMAPMA and optional monomers in water, feeding the solution into the VCL charge at a predetermined rate, periodically adding initiator to the reaction mixture, and polymerizing at about 40° to 130° C., and, if desired, neutralizing the product, to form a polymer product at about 5% to 40% solids, homogeneously dispersed in the solvent.
    Type: Grant
    Filed: August 18, 2000
    Date of Patent: April 9, 2002
    Assignee: ISP Investments Inc.
    Inventors: Jenn S. Shih, Donald I. Prettypaul, John Mc Kittrick, David E. Graham
  • Patent number: 6255350
    Abstract: This invention relates to a single phase emulsifiable concentrate composition comprising (a) between about 0.05 and about 25 wt. % of a biologically, fungicidally and/or herbicidally active aza compound; (b) between about 2 and about 40 wt. % of a lactam selected from the group of N-methyl pyrrolidone, N-methyl caprolactam, a C8 to C18 alkyl pyrrolidone, a C8 to C18 caprolactam and a mixture thereof; (c) between about 2 and about 20 wt. % of a moisture scavenging agent selected from the group consisting of a liquid molecularly hindered carbodiimide, a molecular sieve or a mixture thereof and (d) between about 10 and about 80 wt. % of a mixture of at least two non-ionic surfactants having an overall hydrophilic/lipophilic balance (HLB) above 7. The invention also relates to the stable oil-in-water (o/w) miniemulsions prepared from the above by dilution to between about 40 and about 99.99 wt. % water for a “pour on”, dip or spray solution useful in the treatment of animals or plants.
    Type: Grant
    Filed: October 9, 1998
    Date of Patent: July 3, 2001
    Assignee: ISP Investments Inc.
    Inventors: Domingo I. Jon, Donald I. Prettypaul, Matthew J. Benning, Kolazi S. Narayanan, Robert M. Ianniello
  • Patent number: 6187715
    Abstract: Clear, high load water miscible emulsions of quinoxalinyl ester herbicides, particularly quizalofop-p-ethyl, as a single phase, translocatable composition which is free of xylene and alkylphenol ethoxylate surfactants and concentrate matrix for the active quinoxalinyl ester component at between about 9 and about 25 wt. % active concentration.
    Type: Grant
    Filed: February 16, 2000
    Date of Patent: February 13, 2001
    Assignee: ISP Investments Inc.
    Inventors: Kolazi S. Narayanan, Domingo I. Jon, Donald I. Prettypaul
  • Patent number: 5968990
    Abstract: A water-dilutable, microemulsion concentrate and pour-on formulations for water-insoluble insecticides such as amitraz is described, which includes a mixture of nonionic emulsifiers of defined amounts and HLB values, and, particularly, including a molecular sieve or a water stabilizer additive to provide a single phase, clear, physically and chemically stable system, without decomposition for an extended period of time.
    Type: Grant
    Filed: September 24, 1998
    Date of Patent: October 19, 1999
    Assignee: ISP Investments Inc.
    Inventors: Domingo I. Jon, Donald I. Prettypaul, Matthew J. Benning, Kolazi S. Narayanan, Robert M. Ianniello