Patents by Inventor John G. Brodnyan

John G. Brodnyan 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).

  • Multi-stage polymer latex cement modifier and process of making
    Patent number: 5328952
    Abstract: Multi-stage polymer process and composition having an alkali-insoluble emulsion polymer and an alkali-soluble polymer are produced by a two-stage sequential emulsion polymerization process. When the multi-stage polymers of this invention are utilized as cement modifiers, improvements in cement mortar physical properties are realized.
    Type: Grant
    Filed: February 14, 1992
    Date of Patent: July 12, 1994
    Assignee: Rohm and Haas Company
    Inventors: John G. Brodnyan, Shang-Jaw Chiou, Mark P. de Grandpre
  • Bonded nonwoven fabrics suitable for diaper coverstock
    Patent number: 4356229
    Abstract: This invention concerns a nonwoven fabric particularly adapted for use as a diaper coverstock. The fabric consists essentially of fibers and a binder wherein at least 50%, by weight, of the fibers are hydrophobic fibers. The binder comprises a water insoluble, hydrophobic, emulsion copolymer of ethylenically unsaturated monomers comprising (A) 1 to 8% by weight of a monoethylenically unsaturated carboxylic acid, or a mixture thereof, (B) 50 to 75% by weight of a C.sub.4 to C.sub.8 alkyl acrylate or a mixture thereof, and (C) 20 to 49% by weight of methyl methacrylate, styrene, .alpha.-methyl styrene or a mixture thereof. The fabric has sufficient wet tensile strength for use as a diaper coverstock.
    Type: Grant
    Filed: October 20, 1980
    Date of Patent: October 26, 1982
    Assignee: Rohm and Haas Company
    Inventors: John G. Brodnyan, Walter G. De Witt, III, Robert A. Gill, Gary D. Stelling
  • Crushed foam coated leather and leather-like materials
    Patent number: 4061822
    Abstract: Crushed foam coated leather and leather-like materials characterized by excellent foam adherence, are prepared by flowing foamed compounded polymeric latices into contact with a leather or leather-like substrate and partially drying same, followed by compressive crushing of the dried foam, plating or embossing to achieve optimum adhesion, and further heating and curing to develop maximum physical properties.
    Type: Grant
    Filed: June 9, 1975
    Date of Patent: December 6, 1977
    Assignee: Rohm and Haas Company
    Inventors: John G. Brodnyan, Donald F. Holloway, Stanley Le Sota
  • Highly absorbent copolymers and foamed articles having rewettability made therefrom
    Patent number: 3992333
    Abstract: The present invention is concerned with new and improved binders for the production of foamed or cellular articles which have a high degree of absorbency, and retain their bonded character as well as absorbency through numerous wash-dry cycles. The cellular articles are bonded by a novel self-cross-linking binder comprising a copolymer of (a) N-methylol-amine or -amide units, (b) sulfonic acid units which contain no basic nitrogen atoms or group, and (c) certain acrylic units of neutral but mildly hydrophilic character which contain no basic nitrogen atoms or group.
    Type: Grant
    Filed: June 27, 1972
    Date of Patent: November 16, 1976
    Assignee: Rohm and Haas Company
    Inventors: William D. Emmons, Vincent J. Moser, John G. Brodnyan, Norman Shachat