Patents by Inventor Walter Regel

Walter Regel 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).

  • Molding materials containing styrene/acrylonitrile copolymers and ethylene oxide/propylene oxide three-block copolymers
    Patent number: 4291134
    Abstract: Molding materials containing styrene-acrylonitrile copolymers, in which an additional essential ingredient is from 0.1 to 2.0% by weight, based on the copolymer, of a three-block polymer X-Y-X, where X is a terminal ethylene oxide block and Y is a central propylene oxide block. The proportion of terminal ethylene oxide blocks X, based on block copolymer, is from 5 to 20% by weight, while the central propylene oxide block Y has a number-average mean molecular weight of from 700 to 3,000 and its proportion is from 80 to 95% by weight, based on block copolymer. The number-average molecular weight of the sum of the two terminal blocks X is from 140 to 1,000.
    Type: Grant
    Filed: April 9, 1980
    Date of Patent: September 22, 1981
    Assignee: BASF Aktiengesellschaft
    Inventors: Jurgen Hambrecht, Gerhard Lindenschmidt, Walter Regel