Patents Represented by Attorney Barabara C. Siegell

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  • Production of substantially linear highly crystalline polyolefins
    Patent number: 5036148
    Abstract: High strength, substantially linear, highly crystalline, high molecular weight-polyolefin shaped structure having a tenacity of greater than 15 g/den and an initial modulus of greater than 500 g/den by drawing never-processed polyolefin at a temperature of 60.degree. C. to 145.degree. C.; and processes for making never-processed polyolefin and such shaped structures.
    Type: Grant
    Filed: October 25, 1989
    Date of Patent: July 30, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Henri D. Chanzy, Bruno Rotzinger, Paul Smith