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:
Feb. 07, 1978
Filed:
Jul. 27, 1972
Applicant:
Inventor:
Geir Bjornson, Bartlesville, OK (US);
Assignee:
Phillips Petroleum Company, Bartlesville, OK (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
2605 / ; 204 / ;
Abstract
Apparatus and method for separating tetraalkylammonium salt from a first stream comprising adiponitrile, dissolved tetraalkylammonium salts, and unconverted acrylonitrile discharging from an electrohydrodimerization process by passing the first stream through a distillation zone for separating unconverted acrylonitrile therefrom, mixing aqueous phosphoric acid with the resultant bottoms stream to form an emulsion, and separating the emulsion into an essentially salt-free organic phase and a tetraalkylammonium salt-containing aqueous phase.