HERBICIDAL COMPOSITIONS

摘要

1339315 Herbicidal compositions CIBAGEIGY CANADA Ltd 2 Aug 1971 [25 Nov 1970] 36208/71 Heading A5E A herbicidal composition comprises a mixture of at least two different salts of at least one herbicidally active compound, said mixture of salts being miscible with a liquid polar carrier such as water and having the property of being liquid at 20‹C for at least 24 hours, said composition having an absolute surface tension of not more than 35 dynes/cm, when measured at 25‹C in distilled water at a 1% active herbicide concentration. Suitable salts are those of primary amines of formula R-NH 2 , secondary amines of formula RR'NH, tertiary amines of formula RR'R 2 N, quaternary ammonium salts of formula RR'R 2 R 3 N+, wherein the radicals R, R', R 2 and R 3 are selected from alkyl, hydroxy-substituted alkyl and alkoxy groups having 1 to 6 carbon atoms, ammonium and alkali metal salts. Suitable herbicidally active acids include 2, 4-dichlorophenoxyacetic acid, 2, 4-dichlorophenoxypropionic acid, 2, 4-dichlorophenoxybutyric acid, 2-methyl-4-chlorophenoxyacetic acid, 2-methyl- 4-chlorophenoxybutyric acid, 2, 4, 5-trichlorophenoxyacetic acid, 2, 3, 6-trichlorobenzoic acid, 2-methoxy-3, 5, 6-trichlorobenzoic acid, 2-methoxy-3, 6-dichlorobenzoic acid, 4-chloro- 2-oxobenzothiazolin-3-ylacetic acid, 3, 5-dibromo-4-hydroxybenzonitrile, 3, 5-diiodo-4-hydroxybenzonitrile, 4-amino-3, 5, 6-trichloropicolinic acid, trichloroacetic acid, 2, 2-dichloropropionic acid, 3-amino-2, 5-dichlorobenzoic acid, methane arsonic acid, 2, 3, 6-trichlorophenylacetic acid and 3, 6-endoxo-hexahydrophthalic acid, 4-amino-3, 5, 6-trichloropicolinic acid, 4-chloro-2-oxobenzothiazolin -3- ylacetic acid. The composition may include a carboxylic or inorganic salt of 3-amino-1, 2, 4- triazole or 1, 1'-dimethyl-4, 4'-bipyridine. Suitable salts include methylamine, ethylamine, isopropylamine, propylamine, n-butylamine, 1- amino-pentane, 2-amino-pentane, cyclohexylamine, monoethanolamine, monoisopropanolamine, dimethylamine, diethylamine, diisopropylamine, diethanolamine, diisopropanolamine, trimethylamine, triethylamine, triisopropylamine, tri-n-butylamine, triethanolamine, triisopropanolamine, diethylaminoacetal, 1, 2-diaminoethane, 1, 2- and 1, 3-diaminopropane, putrescine, cadaverine, 1, 6-diamino-n-hexane, 1, 10-diaminodecane, 1, 2, 3-triaminocyclopropane, spermidine, sym-homo-spermidine, 1- hydroxy-2, 2, 2-triaminomethylethane, tetra (aminomethyl) methane, hexamethylenetetramine, spermine, bis (4-aminobutyl) ether, bis-(5- aminopentyl)-ether, 4(2-aminoethyl) morpholine, 4(3-aminopropyl) morpholine. A method of preparing the above composition and a method of controlling undesired vegetation by use of the composition are also claimed.