A - Human Necessities – 01 – N
Patent
A - Human Necessities
01
N
71/7
A01N 37/38 (2006.01) A01N 39/04 (2006.01) A01N 43/78 (2006.01)
Patent
CA 1219140
LIQUID HERBICIDAL COMPOSITION HAVING EXTENDED PENETRATING AND SYSTEMIC ACTIVITY Abstract of the Disclosure A liquid herbicidal composition is dis- closed which retains its penetrating and systemic activity after application to susceptible flora under normal ambient conditions for a period of at least six hours by combining at least two different salts of at least one herbicidally active compound and a polyhydric alcohol. The salts are preferably amine, ammonium or alkali metal salts of herbicidally active acidic compounds which are halogenated carboxylic acids, aromatic carboxylic acids and the halogenated aromatic carboxylic acids and particularly deriva- tives of phenoxy acids or benzoic acids, organic arsenic acids as well as halogenated aliphatic car- boxylic acids. The polyhydric alcohol is preferably a polyhydric diol having 2 to 6 carbon atoms or glycerol. Chelating and dispersing agents may also be included in the formulation. The herbicidal composition upon application to noxious vegetation has the unexpected property of retaining its phyto- toxic activity throughout the maximum residence time necessary for effective weed and brush control by virtue of the fact that the composition not only resists crystallization but also displays no tendency throughout such maximum exposure time to either burn or otherwise damage the external cellular layers of the plant being treated which would impede active agent penetration into the plant, or reversion to acid form that could produce outer cellular layer burn or scaling with the same detrimental effect on penetration of the herbicide and systemic activity.
456815
Gowling Lafleur Henderson Llp
Pbi/gordon Corporation
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