Patents by Inventor Harold A. Wright

Harold A. Wright 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).

  • Method of making broader molecular weight distribution polystyrene
    Patent number: 4029869
    Abstract: Attempts to prepare polystyrene by peroxide-initiated suspension polymerization at 125.degree. C resulted in polymer having narrower molecular weight distribution than desired. The problem has been solved by copolymerizing the styrene with from 0.05 to 0.35 weight per cent, based on styrene, of a modifying comonomer consisting of a non-conjugated diolefinic compound having one very reactive olefinic group and one less reactive olefinic group such as, for example, allyl methacrylate.
    Type: Grant
    Filed: December 30, 1975
    Date of Patent: June 14, 1977
    Assignee: ARCO Polymers, Inc.
    Inventors: Alvin R. Ingram, Harold A. Wright