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:
May. 04, 1999
Filed:
Aug. 24, 1998
Applicant:
Inventors:
Yoshiyuki Kusuoka, Funabashi, JP;
Yoshihiro Kudo, Funabashi, JP;
Norio Tanaka, Funabashi, JP;
Jun Satow, Funabashi, JP;
Assignee:
Nissan Chemical Industries, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
544312 ;
Abstract
A process for the separation of phenyluracil compounds is provided. The process according to the present invention comprises treating with a weakly-basic substance a mixture of a halogenophenyluracil compound (I) and a cyanophenyluracil compound (II): ##STR1## wherein X is a hydrogen or fluorine atom, Y is a chlorine or bromine atom, and R is an alkyl group containing 1 to 3 carbon atoms, to separate the compounds (I) and (II).