Patents by Inventor Vincent John Gajewski

Vincent John Gajewski 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).

  • Polyurethane composition useful for coating cylindrical parts
    Patent number: 5895689
    Abstract: A method for coating a cylindrical object which comprises applying to the cylindrical object an effective amount of a polyurethane composition comprising:a) an isocyanate-terminated polyurethane prepolymer; andb) a curative agent comprising i) a polyol; ii) an aromatic diamine; iii) a thixotropic aliphatic amine; and iv) a thixotropic colloidal additive.
    Type: Grant
    Filed: May 6, 1998
    Date of Patent: April 20, 1999
    Assignee: Uniroyal Chemical Company, Inc.
    Inventor: Vincent John Gajewski
  • Polyurethane composition useful for coating cylindrical parts
    Patent number: 5895806
    Abstract: A polyurethane composition comprising:a) an isocyanate-terminated polyurethane prepolymer; andb) a curative agent comprising i) a polyol; ii) an aromatic diamine; iii) a thixotropic aliphatic amine; and iv) a thixotropic colloidal additive. This composition is useful for coating cylindrical objects.
    Type: Grant
    Filed: May 6, 1996
    Date of Patent: April 20, 1999
    Assignee: Uniroyal Chemical Company, Inc.
    Inventor: Vincent John Gajewski
  • Water-dispersable polyurethanes
    Patent number: 5714561
    Abstract: Water-dispersible polyurethane prepolymers comprising one or more organic diisocyanates; a difunctional compound having a molecular weight of from about 250 to about 10,000 which is difunctionally reactive with the organic diisocyanate and which is free of side chain polyoxyalkylene units; and a dispersion diol which is difunctionally reactive with the organic diisocyanate and which contains side chain polyoxyalkylene units. Methods of preparation of the prepolymers and their use in aqueous polyurethane dispersions are also described.
    Type: Grant
    Filed: September 23, 1996
    Date of Patent: February 3, 1998
    Assignee: Uniroyal Chemical Company, Inc.
    Inventors: James Chin, Vincent John Gajewski
  • Trimodal molecular weight polyether polyol prepolymers
    Patent number: 5654390
    Abstract: A trimodal molecular weight toluene diisocyanate endcapped polyether polyol prepolymer is disclosed having free toluene diisocyanate below 0.5 weight percent where the three molecular weight polyols used are 300-800, 800 to 1500 and 1500-10000. Processes to make and use these prepolymers as polyurethane castable elastomers having exceptionally long flex fatigue lives using environmentally friendly materials essentially free of TDI are also disclosed.
    Type: Grant
    Filed: November 17, 1995
    Date of Patent: August 5, 1997
    Assignee: Uniroyal Chemical Company, Inc.
    Inventors: Vincent John Gajewski, Christopher James Maupin