Patents by Inventor Robert A. Markovs

Robert A. Markovs 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).

  • Process for the preparation of integral skin polyurethane steering wheels
    Patent number: 4994502
    Abstract: An integral skin polyurethane steering wheel is prepared by reacting (a) a mixture of a graft polymer dispersion in a polyol or a polyol mixture (b) an organic polyisocyanate selected from the group consisting of an isocyanate prepolymer prepared by reacting 4,4'-diphenylmethane diisocyanate with a mixture of dipropylene glycol and a polyoxypropylene glycol having a molecular weight of about 420, a polymeric polymethylene polyphenylene polyisocyanate containing about 55 weight percent diphenylmethane diisocyanate, a 1:1 mixture of 2,4'and 4,4'-diphenylmethane diisocyanate and mixtures thereof, (c) a blowing agent, (d) a chain extender, and (e) a catalyst, surfactant and optionally flame retardants, fillers U.V. adsorbers and other additives.
    Type: Grant
    Filed: July 1, 1987
    Date of Patent: February 19, 1991
    Assignee: BASF Corporation
    Inventors: Robert A. Markovs, Eric R. Sattler
  • Rim microcellular polyurethane elastomer employing heteric or internal block ethylene oxide polyols
    Patent number: 4738993
    Abstract: A RIM polyurethane elastomer prepared by reacting an organic polyisocyanate, a polyoxyalkylene polyether polyol, and a chain extender. The polyol contains from about 7 weight percent to about 40 weight percent ethylene oxide either as a block or a heteric structure.
    Type: Grant
    Filed: October 22, 1985
    Date of Patent: April 19, 1988
    Assignee: BASF Corporation
    Inventor: Robert A. Markovs
  • Oxyethylated aromatic amines and their use as chain extenders in the preparation of polyurethane-polyurea elastomers
    Patent number: 4596685
    Abstract: This invention relates to oxyethylated toluenediamine and diaminodiphenylmethane and their use as chain extenders in the preparation of polyurethane-polyurea elastomers.
    Type: Grant
    Filed: October 18, 1984
    Date of Patent: June 24, 1986
    Assignee: BASF Corporation
    Inventor: Robert A. Markovs
  • Alkylated vicinal toluenediamines and their use as chain extenders in the preparation of polyurethane-polyurea elastomers
    Patent number: 4529746
    Abstract: This invention relates to alkylated vicinal toluenediamines and their use as chain extenders in the preparation of polyurethane elastomers.
    Type: Grant
    Filed: January 11, 1984
    Date of Patent: July 16, 1985
    Assignee: BASF Wyandotte Corporation
    Inventors: Robert A. Markovs, John W. Lightsey, Gerhard G. Ramlow, Peter T. Kan
  • Graft polyol RIM system possessing excellent thermal properties
    Patent number: 4314038
    Abstract: A thermal dimensionally stable RIM polyurethane elastomer prepared by reacting an organic polyisocyanate, a polyoxyalkylene polyether polyol, and ethylene glycol wherein the reactants have a free-water content of less than 0.10 percent based on 100 parts of polyol plus glycol.
    Type: Grant
    Filed: March 30, 1981
    Date of Patent: February 2, 1982
    Assignee: BASF Wyandotte Corporation
    Inventor: Robert A. Markovs