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:
Jul. 13, 1976
Filed:
Aug. 21, 1974
Applicant:
Inventors:
Takeo Yoshimoto, Yokohama, JA;
Keiichi Igarashi, Yokohama, JA;
Takeo Harayama, Kamakura, JA;
Masaaki Ura, Kamakura, JA;
Naoki Sato, Kamakura, JA;
Teruhiko Toyama, Fujisawa, JA;
Osamu Morikawa, Chigasaki, JA;
Yoshio Takasawa, Chigasaki, JA;
Taisuke Kurechi, Yokohama, JA;
Assignee:
Mitsui Toatsu Chemicals, Incorporated, Tokyo, JA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A01N / ; C07C / ;
U.S. Cl.
CPC ...
71124 ; 2606 / ;
Abstract
2,4-Dichloro-3'-(.beta.-chloroethoxy)-4'-nitrodiphenyl ether is prepared by condensing 2,3',4-trichloro-4'-nitrodiphenyl ether with ethyleneglycol in the presence of an acid-binding agent and then chlorinating the hydroxyethoxy group of the resulting condensate. This compound posesses an excellent herbicidal activity to a wide variety of undesirable weeds with an extremely low phyto-toxicity to useful crops.