Patents Represented by Attorney Mary A. Capria

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  • Use of glycol ether compounds for the production of polyolefin catalysts and supports
    Patent number: 5599762
    Abstract: Glycol ether compounds such as glycol ethers and glycol ether esters are used as azeotropic distillation solvents for conversion of inorganic oxide hydrogels to xerogels by removal of water. These compounds are especially useful to make chromium-containing catalysts for production of high melt index polyolefins at reduced cost compared to known azeotropic solvents.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: February 4, 1997
    Assignee: W. R. Grace & Co.-Conn.
    Inventor: Dean A. Denton