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. 23, 1993
Filed:
Nov. 12, 1991
David B Kanne, Corte Madera, CA (US);
Imperial Chemical Industries PLC, London, GB;
Abstract
Herbicides having the formula ##STR1## in which X is oxygen or sulfur; and if X is sulfur, R.sub.1 is C.sub.1 -C.sub.6 alkyl, C.sub.5 -C.sub.6 cycloalkyl, allyl, phenyl, tolyl, chlorophenyl, 3,4-dichlorophenyl, or phen-(C.sub.1 -C.sub.2)alkyl; R.sub.2 is C.sub.1 -C.sub.4 alkyl, C.sub.2 -C.sub.4 alkoxyalkyl, or allyl; R.sub.3 is C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxyalkyl, pyridyl, phenyl or substituted phenyl in which the substituents are halogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 haloalkoxy, nitro and/or cyano; or R.sub.2 and R.sub.3 taken together form an alkylene chain having from 2 to 6 carbon atoms optionally substituted by up to two C.sub.1 -C.sub.4 alkyl groups; if R.sub.3 is alkyl or alkoxyalkyl, then R.sub.4 and R.sub.5 are each C.sub.2 -C.sub.4 alkyl; if R.sub.3 is phenyl, substituted phenyl or pyridyl, then R.sub.4 and R.sub.5 are C.sub.2 -C.sub. 6 alkyl, phenyl or substituted phenyl; or R.sub.3 and R.sub.5 taken together form an alkylene chain having from 2 to 5 carbon atoms and R.sub.4 is C.sub.2 -C.sub.4 alkyl; and if X is oxygen, R.sub.1 and R.sub.4 taken together form an alkylene ring having from 2 to 5 carbon atoms and R.sub.2, R.sub.3 and R.sub.5 are each C.sub.2 -C.sub.4 alkyl; provided that R.sub.3 is not 2,3,6-trifluorophenyl are described.