Chemistry: fertilizers – Processes and products – Forms or conditioning
Patent
1975-12-22
1978-01-10
Coughlan, Jr., Paul M.
Chemistry: fertilizers
Processes and products
Forms or conditioning
260250A, 2603478, 26034611, 2603472, 2603477, 2603473, 2603474, C07D23708, A01N 922
Patent
active
040677230
ABSTRACT:
Pyridazine derivatives of the formula: ##STR1## wherein R.sup.1 represents a fluorine, chlorine, bromine or iodine atom or an alkyl, alkoxy, alkylthio, alkylsulphonyl, nitro, trifluoromethyl, cyano, alkoxycarbonyl, carboxy, aminocarbonyl, amino, monoalkylamino or dialkylamino group, R.sup.2 represents a hydrogen atom or an alkyl group, R.sup.3 represents a hydrogen, fluorine, chlorine or bromine atom or an alkyl, methoxy, ethoxy or hydroxy group, or R.sup.2 and R.sup.3 together represent an oxygen atom or a hydroxyimino group, R.sup.4 represents a hydrogen atom or an alkyl group and n represents zero or an integer from 1 to 5 inclusive, are new compounds useful as herbicides.
REFERENCES:
patent: 3462432 (1969-08-01), Gall
Garland Ian Philip
Hatton Leslie Roy
Leeds William George
Parnell Edgar William
Berch Mark L.
Coughlan, Jr. Paul M.
May & Baker Limited
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