Patents Represented by Attorney J. B. Burgess

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  • Melt blowing process
    Patent number: 3978185
    Abstract: Melt blown non-woven mats prepared from thermoplastic polymer fibers and substantially completely free of polymer shot are produced at high polymer throughput rates in an improved melt blowing process in which thermoplastic polymer resins, preferably polypropylene, having initial intrinsic viscosities of at least 1.4, are degraded, optionally in the presence of a free radical source compound, to have both reduced intrinsic viscosities and an apparent viscosity in the melt-blowing nozzle orifices of from about 50 to about 300 poise.
    Type: Grant
    Filed: May 8, 1974
    Date of Patent: August 31, 1976
    Assignee: Exxon Research and Engineering Company
    Inventors: Robert R. Buntin, James P. Keller, John W. Harding