Patents by Inventor Gabriele Murrer

Gabriele Murrer 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).

  • METHOD FOR PURIFYING MIXTURES COMPRISING 4,4'-METHYLENEDIPHENYL DIISOCYANATE
    Publication number: 20120123153
    Abstract: The invention relates to a method for purifying mixtures comprising 4,4?-methylenediphenyl diisocyanate, which comprises purifying by distillation a mixture I comprising 4,4?-methylene-diphenyl diisocyanate by means of a column K1, wherein the gaseous stream comprising the mixture I is brought into contact in the column K1 with at least one liquid compound A which has the same or higher boiling point than 4,4?-methylenediphenyl diisocyanate, and wherein the gaseous stream O obtained at the top of the column and comprising 4,4?-methylenediphenyl diisocyanate is cooled in a maximum of 5 seconds to a temperature of 20° C. to 60° C.
    Type: Application
    Filed: November 17, 2011
    Publication date: May 17, 2012
    Applicant: BASF SE
    Inventors: Michael BOCK, Kai Thiele, Gabriele Murrer