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. 17, 2016
Filed:
Oct. 11, 2011
Applicants:
Stefan Ellinger, Visp, CH;
Gaetano LA Delfa, Naters, CH;
Constanze Franzke, Ludwigshafen, DE;
Inventors:
Assignee:
LONZA LTD., Visp, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 211/00 (2006.01); C07C 211/52 (2006.01); C07C 209/74 (2006.01); C07C 233/43 (2006.01);
U.S. Cl.
CPC ...
C07C 211/52 (2013.01); C07C 209/74 (2013.01); C07C 233/43 (2013.01);
Abstract
Disclosed are halogenated diethyltoluenediamines of formula wherein either Ris an amino group and Ris chlorine or bromine, or Ris an amino group and Ris chlorine or bromine, and isomeric mixtures thereof. The halogenated diethyltoluenediamines of formula I are useful as chain extenders for polyurethanes and hardeners for epoxy resins having a relatively long gel time.