Patents by Inventor Roger W. Rumer

Roger W. Rumer 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).

  • Polyisocyanates containing allophanate and isocyanurate groups, a process for their production from a mixture of diisocyanates and their use in two-component coating compositions
    Patent number: 5258482
    Abstract: The present invention is directed to a polyisocyanate mixture whichi) has an NCO content of 10 to 47% by weight,ii) is prepared from a mixture of 1,6-hexamethylene diisocyanate and a cyclic organic diisocyanate having (cyclo)aliphatically-bound isocyanate groups in a molar ratio of 10:90 to 90:10 andiii) contains isocyanurate and allophanate groups in a molar ratio of monoisocyanurates to monoallophanates of 10:1 to 1:5, wherein the allophanate groups are formed from urethane groups which are based on the reaction product of an organic diisocyanate having (cyclo)aliphatically bound isocyanate groups and a monoalcohol containing at least 1 carbon atom and having a molecular weight of up to 2500.The present invention is also directed to a process for the production of these polyisocyanate mixtures and to their use, optionally in blocked form, as an isocyanate component in two-component coating compositions.
    Type: Grant
    Filed: June 12, 1992
    Date of Patent: November 2, 1993
    Assignee: Miles Inc.
    Inventors: Patricia B. Jacobs, Terry A. Potter, Richard R. Roesler, Roger W. Rumer