Solid pesticidal formulation

• US 6,596,292 B2
• Filed: 03/28/2001
• Issued: 07/22/2003
• Est. Priority Date: 06/22/2000
• Status: Active Grant

• Current Assignee: Sumitomo Chemical Company Limited
• Original Assignee: Sumitomo Chemical Company Limited
• Inventors: Nishi, Shugo
• Primary Examiner(s): Levy, Neil S.
• Application Number:
  US09/818,514
• Publication Number:
  US 20020019441A1
• Time in Patent Office: 846 Days
• Field of Search: 424/409, 424/417, 424/421, 424/408, 504/101, 504/116.1, 504/150, 504/174, 504/184
• US Class Current: 424/409
• 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 25/08 containing solids as carriers or diluents
• CPC Class Codes: A01N 25/14 wettable
• CPC Class Codes: A01N 53/00 Biocides, pest repellants or attractants, or plant growth regulators containing cyclopropane carboxylic acids or derivatives thereof

Abstract

A solid pesticidal formulation which comprises (a) 0.1 to 75% by weight of a pesticidal active ingredient, (b) 0.3 to 40% by weight of a dispersant, (c) 0.3 to 20% by weight of a wetting agent, (d) 0.1 to 30% by weight of a boron compound selected from the group of boron oxide, boric acid and borate, (e) 0.1 to 95% by weight of a water-soluble carrier and (f) 0.1 to 30% by weight of smectite that is excellent in preservation stability and can prevent aggregation of formulation, reducing of fluidity, and reducing dispersibility when dilution with water is applied.

Claims

1. A solid pesticidal formulation which comprises

(a) 0.1 to 75% by weight of a pesticidal active ingredient,

(b) 0.3 to 40% by weight of a dispersant,

(c) 0.3 to 20% by weight of a wetting agent,

(d) 0.1 to 30% by weight of a boron compound selected from the group of boron oxide, boric acid and borate,

(e) 0.1 to 95% by weight of a water-soluble carrier and

(f) 0.1 to 30% by weight of smectite.

2. The solid pesticidal formulation according to claim 1, wherein the content ratio of the dispersant and the wetting agent is 1:

9 to 9;

1 and the total content of the dispersant and the wetting agent is 0.6 to 50% by weight.

3. The solid pesticidal formulation according to claim 1, wherein the dispersant is at least one selected from the following group (b1) and (b2):

(b1) lignosulfate;

naphthalenesulfonic acid-formalin condensate;

copolymers of i) maleic acid or maleic anhydride and ii) isobutylene or diisobutylene;

polycarboxylic acid; and

copolymers of iii) styrene, styrenesulfonic acid or vinyl acetate and iv) acrylic acid, metacrylic acid or maleic anhydride

(b2) alkali metal salts, alkaline earth metal salts, ammonium salts and organic ammonium salts of the compounds given in (b1).

4. The solid pesticidal formulation according to claim 1, wherein the solid formulation is water dispersible granule.

5. The solid pesticidal formulation according to claim 1, wherein the boron compound is boron oxide.

6. The solid pesticidal formulation according to claim 1, wherein the boron compound is diboron trioxide.

7. The solid pesticidal formulation according to claim 1, wherein the boron compound is boric acid.

8. The solid pesticidal formulation according to claim 1, wherein the boron compound is orthoboric acid.

9. The solid pesticidal formulation according to claim 1, wherein the boron compound is metaboric acid.

10. The solid pesticidal formulation according to claim 1, wherein the boron compound is borate.

11. The solid pesticidal formulation according to claim 1, wherein the boron compound is alkali orthoborate.

12. The solid pesticidal formulation according to claim 1, wherein the boron compound is alkaline earth orthoborate.

13. The solid pesticidal formulation according to claim 1, wherein the boron compound is ammonium orthoborate.

14. The solid pesticidal formulation according to claim 1, wherein the water-soluble carrier is a saccharide.

15. The solid pesticidal formulation according to claim 1, wherein the smectite is bentonite.