Patents by Inventor Michele E. Vargo

Michele E. Vargo 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 preparing aspartates
    Patent number: 6911501
    Abstract: The present invention relates to novel aspartates, their method of production and the use of these aspartates as reactive components for polyisocyanates in two-component polyurethane coating compositions and for preparing polyurethane prepolymers. The aspartates are prepared by first reacting a di- or polyamine with an unsaturated ester and then reacting the resultant product with a maleimide.
    Type: Grant
    Filed: January 21, 2004
    Date of Patent: June 28, 2005
    Assignees: Bayer MaterialScience LLC, Bayer MaterialScience AG
    Inventors: Karsten Danielmeier, Charles A. Gambino, Rolf Gertzmann, Richard R. Roesler, Terrell D. Wayt, Michele E. Vargo, Edward P. Squiller, Karen M. Henderson
  • In-situ preparation of polyaspartic ester mixtures
    Patent number: 6790925
    Abstract: The present invention relates to polyaspartate mixtures containing a) 5 to 50 equiv. %, based on the total equivalents of aspartate groups, of a polyoxypropylene polyaspartate corresponding to the formula wherein X1 represents the residue obtained by removing the amino groups from a polyoxypropylene polyamine having a functionality of n, R1 and R2 are identical or different and represent organic groups which are inert to isocyanate groups at a temperature of 100° C. or less, R3 and R4 are identical or different and represent hydrogen or organic groups which are inert towards isocyanate groups at a temperature of 100° C. or less and n is 2 to 4, and b) 50 to 95 equiv.
    Type: Grant
    Filed: December 5, 2002
    Date of Patent: September 14, 2004
    Assignees: Bayer Polymers LLC, Bayer Aktiengesellschaft
    Inventors: Karsten Danielmeier, Catherine M. Britsch, Rolf Gertzmann, Michele E. Vargo, Terrell D. Wayt, Edward P. Squiller, Richard R. Roesler
  • Polyaspartate resins with improved flexibility
    Patent number: 6774206
    Abstract: The present invention relates to polyaspartates corresponding to the formula wherein X1 represents the residue obtained by removing the amino groups from a polyether polyamine having a functionality of n and a number average molecular weight of less than 600, wherein the amino groups are attached to primary carbon atoms and the ether groups are separated by at least two carbon atoms, R1 and R2 are identical or different and represent organic groups which are inert to isocyanate groups at a temperature of 100° C. or less, R3 and R4 are identical or different and represent hydrogen or organic groups which are inert towards isocyanate groups at a temperature of 100° C. or less and n is 2 to 4. The present invention also relates to polyureas prepared by reacting the polyaspartates and optionally other isocyanate-reactive compounds with polyisocyanates.
    Type: Grant
    Filed: September 26, 2002
    Date of Patent: August 10, 2004
    Assignees: Bayer Polymers LLC, Bayer Aktiengesellschaft
    Inventors: Karsten Danielmeier, Catherine M. Britsch, Rolf Gertzmann, Michele E. Vargo, Terrell D. Wayt, Edward P. Squiller
  • Polyaspartate resins with good hardness and flexibility
    Patent number: 6774207
    Abstract: The present invention relates to polyaspartate mixtures containing a) 5 to 70 equiv. %, based on the total equivalents of aspartate groups, of a cyclic polyaspartate corresponding to the formula wherein X1 represents the residue obtained by removing the amino groups from a cyclic polyamine having a functionality of n, R1 and R2 are identical or different and represent organic groups which are inert to isocyanate groups at a temperature of 100° C. or less, R3 and R4 are identical or different and represent hydrogen or organic groups which are inert towards isocyanate groups at a temperature of 100° C. or less and n is 2 to 4, and b) 30 to 95 equiv.
    Type: Grant
    Filed: September 26, 2002
    Date of Patent: August 10, 2004
    Assignees: Bayer Polymers LLC, Bayer Aktiengesellschaft
    Inventors: Karsten Danielmeier, Catherine M. Britsch, Rolf Gertzmann, Michele E. Vargo, Terrell Dean Wayt, Edward P. Squiller, Richard R. Roesler
  • IN-SITU PREPARATION OF POLYASPARTIC ESTER MIXUTURES
    Publication number: 20040110917
    Abstract: The present invention relates to polyaspartate mixtures containing
    Type: Application
    Filed: December 5, 2002
    Publication date: June 10, 2004
    Inventors: Karsten Danielmeier, Catherine M. Britsch, Rolf Gertzmann, Michele E. Vargo, Terrell D. Wayt, Edward P. Squiller, Richard R. Roesler
  • Polyaspartate resins with good hardness and flexibility
    Publication number: 20040063894
    Abstract: The present invention relates to polyaspartate mixtures containing
    Type: Application
    Filed: September 26, 2002
    Publication date: April 1, 2004
    Inventors: Karsten Danielmeier, Catherine M. Britsch, Rolf Gertzmann, Michele E. Vargo, Terrell Dean Wayt, Edward P. Squiller, Richard R. Roesler
  • Polyaspartate resins with improved flexibility
    Publication number: 20040063893
    Abstract: The present invention relates to polyaspartates corresponding to the formula 1
    Type: Application
    Filed: September 26, 2002
    Publication date: April 1, 2004
    Inventors: Karsten Danielmeier, Catherine M. Britsch, Rolf Gertzmann, Michele E. Vargo, Terrell D. Wayt, Edward P. Squiller