# US 5,700,475 A · Stabilized pesticidal compositions and their use

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- Number: US 5,700,475 A
- Document ID: US5700475A
- Status: Granted
- Kind: A
- Application number: 08/580,867
- Filed: 1995-12-29
- Granted: 1997-12-23
- Earliest claimed: 1995-12-29
- Assignees: Monsanto Company
- Inventors: Brent D. Massman; Maria L. Miller
- Web page: https://patentgrep.com/patent/US5700475A

## CPC

- A01N 25/28: Microcapsules {or nanocapsules}
- A01N 25/04: Dispersions, {emulsions, suspoemulsions, suspension concentrates} or gels (foams A01N25/16)
- A01N 47/36: containing the group >N—CO—N< directly attached to at least one heterocyclic ring; Thio analogues thereof
- A01N: PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF (preservation of food or foodstuff A23); BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES (preparations for medical, dental or toiletry purposes which kill or prevent the growth or proliferation of unwanted organisms A61K); PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS

## Abstract

Flowable composites are disclosed which comprise a) microcapsules comprising one or more non-aqueous pesticidally active compositions enclosed in an inert water-soluble wall material; b) a non-aqueous liquid in an amount sufficient to maintain the composite flowable; the non-aqueous pesticidally active composition and the non-aqueous liquid being reactive with each other and the inert water-soluble wall material being insoluble in and impermeable to the non-aqueous liquid and the pesticidally active composition. Also disclosed are composites in which the pesticidally active compositions are internally-reactive in the presence of a non-aqueous liquid or solvent. Processes for production of the composites and their utilization as pesticides are also disclosed.

## Claims

### Claim 1

A flowable composite comprising a) microcapsules having a mean diameter of less than 4 mm comprising a non-aqueous herbicidally active composition enclosed in an inert water-soluble wall material; and b) a non-aqueous herbicidal liquid in an amount sufficient to maintain the composite flowable; the non-aqueous herbicidally active composition and the non-aqueous herbicidal liquid being reactive with each other and the inert water-soluble wall material being insoluble in and impermeable to the herbicidally active composition and the non-aqueous herbicidal liquid.

### Claim 2 (depends on 1)

The composition of claim 1 wherein the ratio of the non-aqueous liquid to solids in the composite is greater than 1:1.

### Claim 3 (depends on 1)

The composition of claim 1 in which and the non-aqueous herbicidal liquid is present in an amount of at least 55 percent by weight.

### Claim 4 (depends on 2)

The composition of claim 2 wherein the herbicidally active composition comprises a sulfonyl urea.

### Claim 5 (depends on 4)

The composition of claim 4 wherein the reactive non-aqueous herbicidal liquid comprises an acetanilide.

### Claim 6 (depends on 2)

The composition of claim 2 wherein the herbicidally active composition comprises halosulfuron and the non-aqueous herbicidal liquid comprises a mixture of acetochlor and furilazole.

### Claim 7

A process for killing undesired vegetation comprising applying to the undesired vegetation or a locus to be protected an herbicidally effective amount of a flowable composite comprising a) microcapsules having a mean diameter of less than 4 mm comprising a non-aqueous herbicidally active composition enclosed in an inert water-soluble wall material; and b) a non-aqueous herbicidal liquid in an amount sufficient to maintain the composite flowable; the non-aqueous herbicidally active composition and the non-aqueous herbicidal liquid being reactive with each other and the inert water-soluble wall material being insoluble in and impermeable to the herbicidally active composition and the non-aqueous herbicidal liquid.

### Claim 8

A process for killing undesired vegetation comprising blending with an aqueous liquid, in an amount sufficient to form a herbicidal admixture, a flowable composite comprising a) microcapsules having a mean diameter of less than 4 mm comprising a non-aqueous herbicidally active composition enclosed in an inert water-soluble wall material; and b) a non-aqueous herbicidal liquid in an amount sufficient to maintain the composite flowable; the non-aqueous herbicidally active composition and the non-aqueous herbicidal liquid being reactive with each other and the inert water-soluble wall material being insoluble in and impermeable to the herbicidally active composition and the non-aqueous herbicidal liquid, and applying to the undesired vegetation or a locus to be protected an herbicidally effective amount of said admixture.

### Claim 9 (depends on 8)

The composition of claim 8 wherein the herbicidally active composition comprises halosulfuron and the non-aqueous herbicidal liquid comprises a mixture of acetochlor and furilazole.