RO81982B - Herbicidal composition - Google Patents

Abstract

Inventia se refera la o compozitie erbicida lichida constituita, în calitate de substanta activa, dintr-o N-alcoximetil-2-halogenacetanilida cu formula generala I: (vezi formula) în care R reprezinta izopropil, n-butil, izobutil, sec-butil, alil sau 2-metilbutil; R1 reprezinta metil, izopropil, n-butil sau alil si R2 si R3 reprezinta hidrogen sau metil, cu conditia ca R1 si R2, R3 sa reprezinte fiecare metil atunci cînd R reprezinta n-butil, izobutil sau sec-butil; R2 si R3 sa reprezinte fiecare hidrogen, atunci cînd R reprezinta izobutil, izopropil sau sec-butil si R1 reprezinta izopropil sau n-butil si R2 reprezinta hidrogen si R3 reprezinta metil, atunci cînd R reprezinta 2-metilbutil sau alil si R1 reprezinta alil, în proportii în greutate de 5....85%, împreuna cu un solvent ales dintre monoclorbenzen hidrocarburi aromatice C9, xilen, dimetilsulfoxid, N-metilpirolidina, dimetilformamida si apa, în proportii în greutate de 11....94% si eventual un agent activ de suprafata ales dintre amestec de dodecilnenzensulfonat de calciu cu polixitileneteri, amestec de dodecilbenzensulfonat de calciu cu alchilarilpolieteralcool, ulei de ricin polietoxilat, copolimer bloc polioxietilena/polioxipropilena în butanol si lignosulfonat alcalin sau alcalinp-pamîntos, în proportii în greutate de 1...5% si rodamina B în proportie în greutate de 0,5%.The invention relates to a liquid herbicidal composition as an active substance of an N-alkoxymethyl-2-haloacetanilide of the general formula I wherein R represents isopropyl, n-butyl, isobutyl, sec-butyl , allyl or 2-methylbutyl; R1 is methyl, isopropyl, n-butyl or allyl and R2 and R3 are hydrogen or methyl, with the proviso that R1 and R2, R3 each represent methyl when R represents n-butyl, isobutyl or sec-butyl; R2 and R3 each represent hydrogen when R represents isobutyl, isopropyl or sec-butyl and R1 represents isopropyl or n-butyl and R2 represents hydrogen and R3 represents methyl when R represents 2-methylbutyl or allyl and R1 represents allyl, in proportions by weight of 5-85%, together with a solvent selected from C9 aromatic hydrocarbons, xylene, dimethylsulfoxide, N-methylpyrrolidine, dimethylformamide and water, in weight ratios of 11-94% and optionally a surface active agent selected from a mixture of calcium dodecylbenzene sulfonate with polyoxyethylene ethers, a mixture of calcium dodecylbenzene sulfonate with alkylaryl polyether alcohol, polyethoxylated castor oil, polyoxyethylene / polyoxypropylene block copolymer in butanol and alkali or alkaline earth metal lignosulphonate in a weight ratio of 1. .5% and rhodamine B in a weight ratio of 0.5%.