The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 12, 2015
Filed:
Jul. 09, 2013
Applicant:
Bayer Materialscience Llc, Leverkusen, DE;
Inventors:
Friedhelm Steffens, Leverkusen, DE;
Tim Loddenkemper, Dormagen, DE;
Rainer Bellinghausen, Odenthal, DE;
Hartwig Kempkes, Overath, DE;
Assignee:
Bayer MaterialScience AG, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 263/20 (2006.01); C07C 263/10 (2006.01);
U.S. Cl.
CPC ...
C07C 263/20 (2013.01); C07C 263/10 (2013.01);
Abstract
The present invention relates to a method for working up distillation, residues from isocyanate production in which monomeric isocyanate present in distillation residues is recovered by means of a spray-dry method and the overall yield of monomeric isocyanate is thus significantly increased.