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. 24, 2008
Filed:
Dec. 14, 2005
Applicants:
Steven J. Hobbs, Wolcott, CT (US);
Joseph F. Stieber, Prospect, CT (US);
Inventors:
Steven J. Hobbs, Wolcott, CT (US);
Joseph F. Stieber, Prospect, CT (US);
Assignee:
Chemtura Corporation, Middlebury, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 209/68 (2006.01); C07C 211/43 (2006.01); C10M 169/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process for alkylation of a N'-phenyl-N-alkyl-p-phenylenediamine of specified formula in an ionic liquid unexpectedly produces a N′-phenyl-N-alkyl(alkylphenylene)diamine of a second specified formula. The use of an inorganic liquid permits convenient separation of the alkylated reaction product from the reaction mixture.
Hobbs, Steven. (2008). Alkylation of n'-phenyl-n-alkylphenylenediamines in ionic liquid, n′-phenyl-n-alkyl (alkylphenylene) diamines produced thereby, and lubricant compositions containing same (U.S. Patent No. 7390928). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7390928
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile