Patents by Inventor H. Leslie LaNieve, III

H. Leslie LaNieve, III 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).

  • Oxymethylene polymer molding compositions having enhanced impact resistance and article molded therefrom
    Patent number: 4707525
    Abstract: Articles molded from oxymethylene polymer molding compositions of the present invention exhibit enhanced impact strength properties, especially at low temperatures such as -20.degree. F. It has now been found that the impact strength of articles molded from oxymethylene polymer molding compositions may be improved when the compositions include an elastomeric polyurethane, which is the reaction product of:(i) 4,4'-methylenebis(phenyl isocyanate),(ii) polyoxytetramethylene glycol having a molecular weight within the range of about 1500 to about 3000, and(iii) at least one diol extender selected from the group consisting of aliphatic straight chain diols having from 2 to about 6 carbon atoms, bis(2-hydroxy-ethyl) ether of hydroquinone, and bis(2-hydroxy-ethyl) ether of resorcinol.
    Type: Grant
    Filed: November 14, 1986
    Date of Patent: November 17, 1987
    Assignee: Celanese Corporation
    Inventors: H. Leslie LaNieve, III, Robert S. Drzal, Benjamin S. Ehrlich