Patents by Inventor Antonio Manoel Marques Pereira

Antonio Manoel Marques Pereira 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).

  • Polymer and use of the polymer as grinding and dispersing resin and binder for paint
    Patent number: 5684078
    Abstract: The present invention relates to water-dilutable emulsion polymers prepared by multistep emulsion polymerization. To this end,(a1) 0.5 to 5.0% by weight of ethylenically unsaturated monomers containing carboxyl groups, and(a2) from 0.5 to 2.5% by weight of olefinically unsaturated carboxamides,where a total of from 1.0 to 8.0% by weight of hydrophilic ionic and hydrophilic nonionic olefinically unsaturated monomers are employed, and(b) from 92.0 to 99.0% by weight of further ethylenically unsaturated monomers containing no further functional groups,are polymerized in the first step of the emulsion polymerization, where the total amount of monomers in the first step is 100% by weight, and exclusively olefinically unsaturated monomers containing no further functional groups are polymerized in the second step of the emulsion polymerization, and the weight ratio between the monomers polymerized in the first step and the monomers polymerized in the second step is from 30-80%:20-70% by weight.
    Type: Grant
    Filed: March 28, 1995
    Date of Patent: November 4, 1997
    Assignee: BASF Lacke +Farben, AG
    Inventors: Arthur Pfaffenschlager, Antonio Manoel Marques Pereira, Wilson Marques Canabrava