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. 15, 1994
Filed:
Dec. 23, 1991
Kazufumi Nakamura, Sodegaura, JP;
Masahiro Nishii, Sodegaura, JP;
Ryoichi Adachi, Sodegaura, JP;
Masatoshi Uemura, Sodegaura, JP;
Ichiro Nasuno, Sodegaura, JP;
Izumi Terada, Sodegaura, JP;
Takashi Mitsuyama, Sodegaura, JP;
Hidetoshi Koga, Sodegaura, JP;
Idemitsu Kosan Company Limited, Tokyo, JP;
Abstract
The present invention relates to a process for the production of a biguanide derivative useful as an intermediate for triazine-type herbicides, in which the biguanide derivative can be produced at high yields by reacting a phenoxyalkylamine salt with dicyandiamide in a solvent containing a paraffinic hydrocarbon having 8 to 15 carbon atoms, or by reacting a free phenoxylakylamine with a hydrogen halide in a solvent containing a paraffinic hydrocarbon having 8 to 15 carbon atoms and reacting the resultant a phenoxyalkylamine salt with dicyandiamide in the same solvent without isolating the phenoxyalkylamine salt.