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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.:

US 4422981 B1

PDFFull Text
Date of Patent:
Dec. 27, 1983

Filed:

Mar. 24, 1982

Process for production of 2-methyleneglutaronitrile

Applicant:
Inventors:

Hiroyuki Omori, Yokkaichi, JP;

Makoto Takeda, Ami, JP;

Koichi Fujita, Matsusaka, JP;

Mitsugi Kataoka, Yokkaichi, JP;

Assignee:

Mitsubishi Petrochemical Company Limited, Tokyo, JP;

Attorney:

Oblon, Fisher, Spivak, McClelland & Maier

Primary Examiner:

Joseph Paul Brust

Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
2604 / ; 2604 / ; 203 77 ; 203 91 ; 203D / ;
Abstract

From an acrylonitrile-dimerization liquid product prepared by contacting acrylonitrile with a specific catalyst composed of a metal halide and a trialkylamine, 2-methyleneglutaronitrile is efficiently recovered by a process which comprises contacting the reaction liquid product under stirring with benzene, toluene or xylene as well as with water in specific ratios, and then separating the resulting aromatic hydrocarbon layer from the mixture to recover 2-methyleneglutaronitrile.

Find Patent Forward Citations

Omori, Hiroyuki. (1983). Process for production of 2-methyleneglutaronitrile (U.S. Patent No. 4422981). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4422981

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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