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:
Dec. 14, 1976
Filed:
Oct. 01, 1974
Applicant:
Inventor:
Charles Leonard Liotta, Decatur, GA (US);
Assignee:
E. I. Du Pont de Nemours and Company, Wilminton, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
260338 ; 2603403 ; 2604651 ; 2604654 ; 2604657 ; 2604 / ; 2604659 ;
Abstract
Complexes of certain macrocyclic polyethers in which the polyether ring contains 18 ring atoms, 6 of which are oxygen, and the oxygen atoms are separated by 2 carbon atoms, with aliphatic nitriles having 2 to 12 carbon atoms, and the use of such complexes to obtain pure nitrile and/or pure macrocyclic polyether are disclosed.