Herbicidal emulsions

• US 4,853,026 A
• Filed: 04/30/1987
• Issued: 08/01/1989
• Est. Priority Date: 05/02/1986
• Status: Expired due to Term

• Current Assignee: Hoechst Aktiengesellschaft (Sanofi )
• Original Assignee: Hoechst Aktiengesellschaft (Sanofi )
• Inventors: Frisch, Gerhard, Albrecht, Konrad
• Primary Examiner(s): NOT, DEFINED
• Application Number:
  US07/044,444
• Time in Patent Office: 824 Days
• Field of Search: 71/85, 71/DIG. 1
• US Class Current: 504/127
• CPC Class Codes: A01N 25/04 Dispersions, emulsions, suspoemulsions, suspension concentrates or gels foams A01N25/16
• CPC Class Codes: C09K 23/017 Mixtures of compounds

Abstract

The present application describes herbicidal agents, based on emulsions, which contain two or more active compounds - a water-soluble, salt-like active compound and an active compound which is soluble in organic solvents - a surfactant mixture and a solvent, the surfactant mixture comprising a combination of phenylsulfonate salts, ethoxylated alkyl- (or polyaryl)phenol phosphates, ethoxylated acidic phohsphoric acid esters and alkylphenol polyglycol ether derivatives. These agents are prepared by the action of high shear forces.

Claims

1. A herbicidal composition comprising an aqueous phase containing a water-soluble salt of a herbicide selected from the group consisting of glufosinate and glyphosate;

an organic phase containing a herbicide being soluble in organic solvents, said herbicide selected from the group consisting of metolachlor, linuron, monolinuron and alachlor; and

a surfactant mixture comprising 0.1 to 4.5% by weight of a phenylsulfonate salt, 1.0 to 10.0% by weight of an ethoxylated alkylphenol phosphate or polyarylphenol phosphate, 0.1 to 2.0% by weight of an ethoxylated acidic phosphoric acid ester and 1.0 to 8.0% by weight of an alkylphenol polyglycol ether,

wherein the total amount of (a) the herbicides is 1 to 60% by weight, (b) the surfactant mixture is 3 to 30% by weight and (c) the solvent is 0 to 75% by weight, all the above weight ratios based on the total weight of the composition.

2. A herbicidal composition as claimed in claim 1, wherein the solvent is toluene, xylene, 1/2 methylnaphthalene, a mixture of C₆ -C₁₆ -aromatic compounds, a phthalate or a water-immiscible ketone.

3. A herbicidal composition as claimed in claim 1, wherein the aqueous to organic phase ratio is 20:

80 to 60;

40.

4. A herbicidal composition as claimed in claim 1, which additionally contains alumino-silicates as thickeners.