Patents Represented by Attorney Betzdearborn Inc.

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  • Stabilized composition for treatment of metal surfaces
    Patent number: 5968246
    Abstract: An aqueous stabilized composition for the treatment of surfaces such as metals, particularly aluminum, comprises a tetraalkyl silicate or a monomeric or oligomeric hydrolysis product thereof, an inorganic passenger powder below 100 nanometer diameter such as fumed or colloidal silica and a stabilizer, all dispersed in a fluid aqueous medium. The stabilizer comprises a carboxylic acid polymer, copolymer or salt thereof, preferably an acrylic acid polymer, copolymer or salt thereof, and most preferably a polyacrylic acid.
    Type: Grant
    Filed: March 6, 1998
    Date of Patent: October 19, 1999
    Assignee: Betzdearborn
    Inventors: Gregory J. Pomrink, Brenda S. Morris