Patent ID: 6083875
Filing Date: 2000-07-04
Classification: A01N

Abstract:
A solid herbicidal composition comprising:(a) oxyfluorfen herbicidea surfactant selected from alkoxylated acetylenic diol surfactants;a surfactant selected from polyoxyalkylene alkyl ether surfactants;an alkoxylated organosilicone based surfactant having a formula selected from the group consisting of: ##STR1## where each R is independently a monovalent hydrocarbyl radical, R.sup.1 is a divalent hydrocarbylene radical, R.sup.2 is independently hydrogen or a lower alkyl or hydroxyalkyl radical, R.sup.3 is hydrogen or a monovalent hydrocarbyl radical, and x, y, a, and b are integers independently greater than or equal to zero; ##STR2## where R, R.sup.2, and R.sup.3, x, a, and b are as defined above; ##STR3## where R.sup.2 and R.sup.3 are as defined above, each R.sup.4 group is independently a monovalent hydrocarbyl radical, c is at least four, d is greater than or equal to zero, and T is hydrogen, a monovalent alkyl or alkenyl radical, or a group of the formula--Si(R.sup.3)[OSi(OR.sup.4).sub.3 ].sub.2 ; (D)(R.sup.4 O).sub.3 Si(OC.sub.2 H.sub.3 R.sup.2).sub.e (OC.sub.3 H.sub.6).sub.f OT.sup.1where R.sup.2 and R.sup.4 are as defined above, e is at least four, f is greater than or equal to zero, and T.sup.1 is hydrogen, a monovalent alkyl or alkenyl radical, or a group of the formula --Si(OR.sup.4).sub.3 ; andR.sup.5 [--(OC.sub.2 H.sub.3 R.sup.2).sub.g OH].sub.1-3 (E)where R.sup.2 is as defined above, R.sup.5 is a saturated or unsaturated alkyl or alkylphenyl radical having at least seven carbon atoms, and g is greater than or equal to one,a phosphate solvent having water solubility below 1%, selected from the group consisting of triaryl phosphates, trialkoxyalkyl phosphates, and alkyldiaryl phosphates, the ratio by weight of total solvent to oxyfluorfen being lower than 3 to 1;(b) N-phosphonomethylglycine or a water-soluble salt of N-phosphonomethylglycine, wherein the weight ratio of glyphosate acid equivalent to said oxyfluorfen is in the range of from 100:1 to 5:1; and(c) an inorganic carrierwherein the combination of the polyoxyalkylene alkyl ether surfactant and the alkoxylated acetyleneic diol surfactant are present in the phosphate solvent in amounts to prevent oxyfluorfen crystal formation during storage of said solid herbicidal composition for three months at temperatures ranging from -10.degree. C. to 54.degree. C.