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. 21, 2019
Filed:
Apr. 13, 2015
Applicant:
Covestro Deutschland Ag, Leverkusen, DE;
Inventors:
Reinhard Halpaap, Odenthal, DE;
Ralph Weber, Leichlingen, DE;
Josef Sanders, Leverkusen, DE;
Frank Richter, Leverkusen, DE;
Elsa Karoline Schadlich, Bonn, DE;
Armin Schymura, Neuss, DE;
Martin Ehrig, Leverkusen, DE;
Sebastian Hoch, Freiburg im Breisgau, DE;
Robert Maleika, Dusseldorf, DE;
Assignee:
COVESTRO DEUTSCHLAND AG, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 263/10 (2006.01); G02B 1/04 (2006.01); C08G 18/24 (2006.01); C08G 18/38 (2006.01); C08G 18/71 (2006.01); C08G 18/75 (2006.01); C08G 18/76 (2006.01); C08K 5/521 (2006.01); C08L 75/04 (2006.01); C08L 81/00 (2006.01); C07C 265/14 (2006.01);
U.S. Cl.
CPC ...
C07C 263/10 (2013.01); C08G 18/242 (2013.01); C08G 18/3865 (2013.01); C08G 18/3868 (2013.01); C08G 18/3876 (2013.01); C08G 18/714 (2013.01); C08G 18/758 (2013.01); C08G 18/7642 (2013.01); C08K 5/521 (2013.01); C08L 75/04 (2013.01); G02B 1/041 (2013.01); C08G 2125/00 (2013.01);
Abstract
The invention relates to a method for producing the isomers 1,3- and/or 1,4-xylylene diisocyanates by reacting the corresponding 1,3- and/or 1,4-xylylene diamines with phosgene in the gaseous phase.