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. 05, 1979
Filed:
Jun. 22, 1978
Applicant:
Inventor:
James P Shoffner, Elk Grove Village, IL (US);
Assignee:
UOP Inc., Des Plaines, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
2605709 ; 2605 / ;
Abstract
Aromatic diamines are prepared by reacting an alkyl formimine which has been obtained by the reaction of an amine possessing a primary or secondary alpha carbon atom with formaldehyde with an aromatic amine in an anhydrous acidic medium. The reaction is usually effected at ambient temperatures and atmospheric pressures and is exemplified by reacting n-hexylformimine with N,N-dimethylaniline in an anhydrous trifluoroacetic acid medium to form p-dimethylamino-N-n-hexylbenzylamine.