Patents by Inventor Enrique Schweigger

Enrique Schweigger 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).

  • Aqueous polymer emulsion
    Patent number: 5744540
    Abstract: An aqueous polymer emulsion is obtained by polymerizing first a monomer composition 1 in a first polymerization stage and then a monomer composition 2 in a polymerization stage 2, in each case by the free radical aqueous emulsion polymerization method, one of the two monomer compositions essentially comprising hard monomers and the other monomer composition essentially comprising soft monomers, and, in addition to the monomer compositions 1 and 2, nitrogen-containing adhesion-promoting monomers being polymerized, at least 20 mol % of the total amount of the adhesion-promoting monomers being polymerized in polymerization stage 1.
    Type: Grant
    Filed: November 1, 1995
    Date of Patent: April 28, 1998
    Assignee: BASF Aktiengesellschaft
    Inventors: Roland Baumstark, Michael Portugall, Rolf Dersch, Enrique Schweigger