Herbicidal emulsifiable suspension concentrate compositions

• US 5,268,352 A
• Filed: 11/25/1991
• Issued: 12/07/1993
• Est. Priority Date: 11/22/1989
• Status: Expired due to Term

• Current Assignee: BASF AG (BASF SE)
• Original Assignee: American Colloid Company (Minerals Technologies Incorporated)
• Inventors: Dexter, Robin W.
• Primary Examiner(s): Hollrah, Glennon H.
• Assistant Examiner(s): Burn, Brian M.
• Application Number:
  US07/797,523
• Time in Patent Office: 743 Days
• Field of Search: 71/86, 71/DIG. 1, 504/206, 504/116
• 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 25/04 Dispersions, emulsions, suspoemulsions, suspension concentrates or gels foams A01N25/16
• CPC Class Codes: A01N 43/50 1,3-Diazoles; Hydrogenated 1,3-diazoles
• CPC Class Codes: A01N 57/20 containing acyclic or cycloaliphatic radicals

Abstract

There are provided compositions comprising concentrated amount of an herbicidally active agent, or combination of agents, in a solid state suspended in a water immiscible solvent containing an anionic surfactant and a nonionic surfactant and optionally containing an antifoam agent and a suspending or thickening agent. Upon dilution with hard or soft water, said compositions readily form sprayable herbicidal emulsions.

Claims

1. A suspension concentrate composition of a herbicidal agent which comprises N-phosphonomethylglycine, an aromatic hydrocarbon mixture having a distillation range of about 118°

C. to 305°

C., a C₈ -C₁₈ alkylbenzenesulfonic acid and an ethoxylated castor oil with 15-60 ethylene oxide units per molecule.

2. The composition according to claim 1 wherein the aromatic hydrocarbon mixture has a distillation range of about 183°

C. to 285°

C., the C₈ -C₁₈ alkylbenzenesulfonic acid is dodecylbenzenesulfonic acid and the ethoxylated castor oil has 36-40 ethylene oxide units per molecule.

5. The composition according to claim 1 further comprising an antifoam agent or a suspension agent.

3. A suspension concentrate which comprises about 10.0% to 50.0% of N-phosphonomethylglycine, about 29.0% to 84.0% of an aromatic hydrocarbon mixture having a distillation range of about 183°

C. to 285°

C., about 3.0% to 10.0% of dodecylbenzenesulfonic acid, about 3.0% to 10.0% ethoxylated castor oil with 36 ethylene oxide units per molecule, 0 to about 0.10% of an antifoam agent and 0 to about 2.0 % of a suspension agent.

4. The composition according to claim 3 comprising about 40.0% to 45.0% of N-phosphonomethylglycine, about 45.0% to 47.0% of an aromatic hydrocarbon mixture having a distillation range of about 225°

C. to 280°

C., about 5.0% to 7.0% of ethoxylated castor oil having 36 units of ethylene oxide per molecule and about 0.05% to 0.15% of an antifoam agent.