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:
Jun. 25, 2019
Filed:
Dec. 07, 2018
Applicant:
Covestro Deutschland Ag, Leverkusen, DE;
Inventors:
Josef Sanders, Leverkusen, DE;
Martin Ehrig, Leverkusen, DE;
Reinhard Halpaap, Odenthal, DE;
Manfred Keller-Killewald, Dormagen, DE;
Armin Schymura, Neuss, DE;
Dietmar Wastian, Dormagen, DE;
Assignee:
Covestro Deutschland AG, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 265/14 (2006.01); C07C 263/10 (2006.01);
U.S. Cl.
CPC ...
C07C 263/10 (2013.01); C07C 265/14 (2013.01);
Abstract
The invention relates to a method for producing 1,5-pentanediisocyanate (PDI) by reacting 1,5-pentanediamine (PDA) with phosgene in the gas phase.