Patents by Inventor Isaac Jacob Levine

Isaac Jacob Levine 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).

  • Ethylene polymerization with ether modified catalyst
    Patent number: 4115639
    Abstract: Supported bis-cyclopentadienyl chromium [II] catalysts are modified with compounds having in their structure the moiety ##STR1## in order to improve the toughness and impact strength of the resulting ethylene polymers made therewith.
    Type: Grant
    Filed: December 20, 1973
    Date of Patent: September 19, 1978
    Assignee: Union Carbide Corporation
    Inventors: Gary Leigh Brown, Weldon Clifford Cummings, Isaac Jacob Levine
  • Preparation of modified and activated chromocene catalysts for ethylene polymerization
    Patent number: 4101445
    Abstract: Ethylene polymerization catalysts are prepared by depositing a chromocene compound on a support with a titanium compound and activating the final blend at 300.degree. C. to about 1000.degree. C. A fluoriding agent can be optionally added where a narrower molecular weight distribution of the polyethylene to be obtained is desired. Catalysts with good reproducibility, when prepared by this method, show particular utility in production of polyethylene by a fluid bed process.
    Type: Grant
    Filed: September 22, 1976
    Date of Patent: July 18, 1978
    Assignee: Union Carbide Corporation
    Inventors: Isaac Jacob Levine, Frederick John Karol
  • Titanium-modified silyl chromate catalysts for ethylene polymerization
    Patent number: 4100105
    Abstract: A catalyst for the preparation of ethylene polymers having higher melt indexes comprises a silyl chromate deposited on a silica support containing both aluminum and titanium.
    Type: Grant
    Filed: January 21, 1977
    Date of Patent: July 11, 1978
    Assignee: Union Carbide Corporation
    Inventors: Isaac Jacob Levine, Frederick John Karol