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:
Jan. 23, 1979
Filed:
Oct. 04, 1972
Applicant:
Inventors:
Theodor Lussling, Gross-Auheim, DE;
Ferdinand Theissen, Gross-Auheim, DE;
Wolfgang Weigert, Offenbach, DE;
Assignee:
Deutsche Gold- und Silber-Scheideanstalt vormals Roessler, Frankfurt, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
2604 / ;
Abstract
Malononitrile is prepared by the short time high temperature reaction of gaseous acetonitrile and cyanogen chloride in the molar ratio of acetonitrile to cyanogen halide of above 1 characterized in that the well mixed reaction components are reacted at an average temperature below 800.degree. C. and the reaction is quenched to condense acetonitrile and malononitrile by introducing a cooling medium into the reaction system.