Patents Assigned to Zeon Chemical Incorporated
  • Non-agglomerating elastomeric particles
    Patent number: 6060553
    Abstract: Elastomeric particles, which have a tendency to agglomerate, are rendered non-agglomerating by contacting those particles with an aqueous solution or dispersion of a polyurethane rubber, a high Mooney viscosity, high gel content rubber and/or a soap, and optionally a polar binder, separating the coated elastomeric particles from the solution or dispersion, and then drying the elastomeric particles while keeping the coated particles in motion.
    Type: Grant
    Filed: October 20, 1997
    Date of Patent: May 9, 2000
    Assignee: Zeon Chemicals Incorporated
    Inventors: John P. Lenczyk, August H. Jorgensen, Jr., Jayant R. Angal, Leland B. Kliever
  • Polyamide and acrylic rubber manufactured products and process for their preparation
    Patent number: 5894051
    Abstract: Multilayer material, essentially without adhesives between the various layers, particularly with two or three layers, consisting of at least one layer of aliphatic polyamide and at least one layer, alternating with the polyamidic layer, of vulcanized acrylic rubber, the above materials being characterized by a peeling strength (between the polyamidic layer and the vulcanized acrylic rubber layer) of more than 5 daN/cm.The process for the preparation of the above material is also described.
    Type: Grant
    Filed: January 14, 1997
    Date of Patent: April 13, 1999
    Assignee: Zeon Chemicals Incorporated
    Inventors: Piero Andreussi, Aroldo Biggi, Arturo Carrano, Cristina Gobbi
  • Peroxide-cured blends of polyacrylates and partially hydrogenated nitrile rubbers
    Patent number: 5612418
    Abstract: Blends of a polyacrylate elastomer with a partially hydrogenated rubber, when peroxide-cured, provide a product which is excellent in resistance to degradation by heat or contact with oil, and which is particularly suitable for making belts, hoses, gaskets and the like for use in automobile engines.
    Type: Grant
    Filed: January 18, 1996
    Date of Patent: March 18, 1997
    Assignee: Zeon Chemical Incorporated
    Inventors: Paul E. Manley, Richard J. Flecksteiner, Michael E. Wood
  • Peroxide-cured polyacrylates
    Patent number: 5589550
    Abstract: A polyacrylate made from a monomer mixture containing alkyl acrylates and optionally ethylene, propylene, and acrylonitrile, and/or an alkoxyl alkyl or alkythioalkyl acrylate is cured with 1,1-bis(t-butylperoxy)-3,3,5-trimethylcyclohexane and m-phenylenediamine maleimide.
    Type: Grant
    Filed: October 25, 1995
    Date of Patent: December 31, 1996
    Assignee: Zeon Chemicals Incorporated
    Inventors: Paul E. Manley, Richard J. Flecksteiner