Herbicidal formulation containing glyphosate acid

• US 5,118,338 A
• Filed: 03/05/1990
• Issued: 06/02/1992
• Est. Priority Date: 12/20/1989
• Status: Expired due to Fees

• Current Assignee: Cheminova Agro A/S
• Original Assignee: Cheminova Agro A/S
• Inventors: Moller, Jens C.
• Primary Examiner(s): Raymond, Richard L.
• Assistant Examiner(s): Bembenick, B.
• Application Number:
  US07/488,245
• Time in Patent Office: 820 Days
• Field of Search: 71/86
• US Class Current: 504/206
• CPC Class Codes: A01N 2300/00 Combinations or mixtures of active ingredients covered by classes A01N27/00 - A01N65/48 with other active or formulation relevant ingredients, e.g. specific carrier materials or surfactants, covered by classes A01N25/00 - A01N65/48
• CPC Class Codes: A01N 25/12 Powders or granules A01N25/26 takes precedence
• CPC Class Codes: A01N 25/30 characterised by the surfactants
• CPC Class Codes: A01N 57/20 containing acyclic or cycloaliphatic radicals

Abstract

A herbicidal formulation which is a water-soluble powdery or granular free-flowing formulation comprising glyphosate acid (N-phosphonomethylglycine) and a surface-active agent that is a powdery or granular nonionic polyglycol ether of a straight chain, saturated, high molecular weight fatty alcohol having an average chain length of C₁₆ -C₁₈, about 25 units of ethylene oxide per mole of fatty alcohol and an HLB value of about 16, said formulation is a highly efficient herbicide.

Claims

1. A herbicidal formulation, characterized by being a water-soluble powdery or granular free-flowing formulation, comprising a mixture of:

a herbicidally effective amount of the glyphosate acid N-phosphonomethylglycine; and

a surface-active agent that is a powdery or granular nonionic polyglycol ether of a straight chain, saturated, high molecular weight fatty alcohol having an average chain length of C₁₆ -C₁₈, about 25 units of ethylene oxide per mole of fatty alcohol and an HLB-value of about 16,

wherein the ratio of the glyphosate acid to the surface active agent is from about 6;

1 to 1;

6.

2. The formulation in accordance with claim 1, further comprising a powdery or granular ammonium sulfate.

3. The formulation in accordance with claim 1, further comprising a complexing agent.

4. The formulation in accordance with claim 1, wherein the ratio of the glyphosate acid to the surface active agent is from about 2:

1 to about 1;

2.