Herbicidal aqueous compositions of imidazolinone herbicides

• US 4,816,060 A
• Filed: 08/15/1986
• Issued: 03/28/1989
• Est. Priority Date: 08/15/1986
• Status: Expired due to Term

• Current Assignee: BASF Agrochemical Products BV (BASF SE)
• Original Assignee: American Colloid Company (Minerals Technologies Incorporated)
• Inventors: Keintz, Roger C., Steller, William S.
• Primary Examiner(s): Mills, Catherine L.
• Application Number:
  US06/896,775
• Time in Patent Office: 956 Days
• Field of Search: 71/92, 71/DIG. 5
• US Class Current: 504/247
• 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 25/02 containing liquids as carriers, diluents or solvents
• CPC Class Codes: A01N 25/22 containing ingredients stabilising the active ingredients
• CPC Class Codes: A01N 43/50 1,3-Diazoles; Hydrogenated 1,3-diazoles
• CPC Class Codes: A01N 43/52 condensed with carbocyclic rings, e.g. benzimidazoles
• CPC Class Codes: A01N 43/90 having two or more relevant hetero rings, condensed among themselves or with a common carbocyclic ring system

Abstract

The present invention relates to aqueous compositions of imidazolinone acid herbicides.

Claims

1. An aqueous herbicidal composition comprising on a weight basis 1.0% to 45% of a water soluble imidazolinone acid salt selected from the group consisting of ammonium 2-(4-isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl)quinoline-3-carboxylate, isopropylammonium 2-(4-isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl)nicotinate, ammonium 5-ethyl-2-(4-isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl)nicotinate and ammonium 2-(4-isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl)-5-methylnicotinate;

0 to 20% urea;

0 to 30% nonionic surfactant and sufficient water to total 100% which has been buffered with a sufficient amount of acid to have an initial pH in a range of about pH 6 to pH 8.5.

2. A composition according to claim 1 wherein the acid used to adjust the pH is acetic acid;

propionic acid;

hydrochloric acid, phosphoric acid or sulfuric acid.

3. A composition according to claim 2 wherein the acid is acetic acid.

4. A composition according to claim 2 containing 15% to 20% by weight of urea.

5. A composition according to claim 4 having an initial pH in a range of pH 7 to pH 7.5.

6. A composition according to claim 5 wherein the formula I acid salt is ammonium 2-(4-isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl)quinoline-3-carboxylate.

7. A composition accordng to claim 2 wherein the formula I acid salt is isopropylammonium 2-(4-isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl)nicotinate.

8. A composition according to claim 5 wherein the formula I acid salt is ammonium 5-ethyl-2-(4-isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl)nicotinate.

9. A composition according to claim 5 wherein the formula I acid salt is ammonium 2-(4-isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl)-5-methylnicotinate.