Patents by Inventor Rodney L. Randow

Rodney L. Randow 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).

  • Patent number: 5281654
    Abstract: This invention is directed to a polyurethane mixture. More particularly, there is provided a mixture polyurethanes comprising a first polyurethane with at least two end groups, where each end group comprises a terminal isocyanate and a polyether; a second polyurethane with at least two end groups, where each end group comprises a terminal isocyanate group and a non-functional group; and a third polyurethane with at least two end groups, where one end group comprises a terminal isocyanate and a polyether and one other end group comprises a terminal isocyanate and a non-functional group. A method for improving the sag resistance of an aqueous composition is also provided. This method permits the formulation of aqueous compositions which resist the tendency to sag. The polyurethane mixture of this invention is useful for thickening aqueous compositions such as paints, coatings, cosmetics, personal care items, hair shampoos and conditioners, cleaners, and the like.
    Type: Grant
    Filed: January 14, 1993
    Date of Patent: January 25, 1994
    Assignee: Rohm and Haas Company
    Inventors: Eric K. Eisenhart, Paul R. Howard, Rodney L. Randow, Rafael G. Aviles
  • Patent number: 4766187
    Abstract: Disclosed herein are compounds of the formula ##STR1## wherein M is a cation selected from the group consisting of alkali metal, ammonium, amino, and hydrogen; and wherein x and y are independently selected from 0 to 2.These compounds are disclosed as being useful as graftable and/or copolymerizable surfactants in latex preparation.
    Type: Grant
    Filed: October 22, 1986
    Date of Patent: August 23, 1988
    Assignee: Rohm and Haas Company
    Inventors: Ronald S. Beckley, Rodney L. Randow, Graham Swift
  • Patent number: 4683100
    Abstract: Disclosed herein are compounds of the formula ##STR1## wherein M is a cation selected from the group consisting of alkali metal, ammonium, amino, and hydrogen; and wherein x and y are independently selected from 0 to 2.These compounds are disclosed as being useful as graftable and/or copolymerizable surfactants in latex preparation.
    Type: Grant
    Filed: December 20, 1984
    Date of Patent: July 28, 1987
    Assignee: Rohm and Haas Company
    Inventors: Ronald S. Beckley, Rodney L. Randow, Graham Swift