Patents by Inventor Bernhard Mihm

Bernhard Mihm 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).

  • Polymerization of vinyl chloride with S.sub.x O.sub.y containing emulsifiers
    Patent number: 4218553
    Abstract: Improved PVC polymers are prepared by an emulsion polymerization process using an emulsifier mixture comprising:(a) 70-30% by weight of an alkyl sulfate of the formula R--OSO.sub.3 Me wherein R is alkyl of 10-18 carbon atoms and Me is Na or K; and(b) correspondingly 30-70% by weight of at least one member selected from the group consisting of(i) 0-65% by weight of an alkyl ether sulfate of the formula R--(OCH.sub.2 --CH.sub.2).sub.n --OSO.sub.3 Me wherein n is an integer of 1-5 inclusive and R and Me have the above-indicated values, and(ii) 0-60% by weight of a sodium alkyl sulfonate wherein the alkyl chain is of 10-20 carbon atoms.
    Type: Grant
    Filed: January 6, 1978
    Date of Patent: August 19, 1980
    Assignee: Chemische Werke Huls Aktiengesellschaft
    Inventors: Hermann Winter, Gerhard Schroter, Wolfgang Jurgeleit, Josef Kalka, Bernhard Mihm