Patents by Inventor James E. Wang

James E. Wang 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).

  • Low-haze ionomers of copolymers of .alpha.-olefins, carboxylic acid esters, and optional comonomers, and processes for making and acidifying these ionomers
    Patent number: 5569712
    Abstract: Ionomer compositions which have improved optical properties are disclosed. These compositions comprise ionomers which can be represented as the polymerization product of alpha-olefins having from two to eight carbon atoms, esters of alpha, beta-ethylenically-unsaturated carboxylic acids, metal salts of acrylic and methacrylic acid, and optional alpha, beta-ethylenically-unsaturated comonomers which impart some desired polymer property or properties, such as acidity and/or solvent resistivity. Also disclosed are methods of making these ionomer compositions in a reactive extruder and treating the compositions with acid to impart acidity to the compositions or to only the surface of the compositions.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: October 29, 1996
    Assignee: Chevron Chemical Company
    Inventors: James E. Wang, David Rosendale, Victor P. Kurkov, Leslie P. Theard, Ta Y. Ching, Lewis R. Compton, Tor H. G. Palmgren, Mitchell P. Eichelberger