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. 07, 1992
Filed:
May. 23, 1990
Applicant:
Inventor:
Jon C Thunberg, Milford, NH (US);
Assignee:
W. R. Grace & Co.-Conn., New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
558346 ; 562 / ; 562575 ;
Abstract
A process for producing glycinonitrile under substantially adiabatic reaction conditions by reacting in a tubular reactor hydrogen cyanide, formaldehyde and ammonia. The excess ammonia is flashed off and the remaining solution volatiles are evaporated and condensed to product. The resulting glycinonitrile can be saponified to the alkali metal glycinate, from which glycine can be prepared.