# US 2014/0193472 A1 · Formulations for paddy rice fields

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- Number: US 2014/0193472 A1
- Document ID: US20140193472A1
- Status: Published application
- Kind: A1
- Application number: 14/239,220
- Filed: 2012-08-16
- Published: 2014-07-10
- Earliest claimed: 2011-08-19
- Assignees: BASF SE
- Inventors: Christian Sowa; Gerhard Peter Dohmen; Martin Obermann; Nadine Riediger; Kristin Klappach; Manuel Schmitt; Reinhard Stierl
- Web page: https://patentgrep.com/patent/US20140193472A1

## CPC

- A01N 25/28: Microcapsules {or nanocapsules}
- A01N 43/56: 1,2-Diazoles; Hydrogenated 1,2-diazoles
- A01N 47/24: containing the groups [IMAGE cpc-sch-A01N-0944.gif], [IMAGE cpc-sch-A01N-0945.gif] or[IMAGE cpc-sch-A01N-0946.gif]; 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

The present invention relates to microcapsules, formulations comprising such microcapsules and to methods of combating phytopathogenic pests in paddy rice fields based on such microcapsules.

## Claims

### Claim at position 1

1-15. (canceled)

### Claim 16

Microcapsules wherein
(i) the capsule has a core-shell structure; and
(ii) at least 80% of the pesticide is dissolved in an organic solvent at 25° C. in the core; and
(iii) the capsule shell is based on a polyurethane comprising polyfunctional isocyanate and a polyamine in polymerized form; and
(iv) the ratio by weight of capsule shell in relation to the weight of the capsule is from 1-20%-by weight

### Claim 17 (depends on 16)

The microcapsules according to claim 16, wherein average particle size of the capsules is from 0.5 to 8 μm.

### Claim 18 (depends on 16)

The microcapsules according to claim 16, wherein the solvent comprises at least on non-polar solvent.

### Claim 19 (depends on 16)

The microcapsules according to claim 16, additionally comprising a surfactant in the core.

### Claim 20 (depends on 16)

The microcapsules according to claim 16, wherein at least one encapsulated pesticide is selected from the groups of strobilurine fungicides or carboxamide fungicides.

### Claim 21 (depends on 20)

The microcapsules according to claim 20, wherein the strobilurine is pyraclostrobin.

### Claim 22 (depends on 20)

The microcapsules according to claim 20, wherein the encapsulated carboxamide fungicide is fluxapyroxad.

### Claim 23 (depends on 20)

The microcapsules according to claim 20, wherein the encapsulated fungicide is a mixture of fluxapyroxad and pyraclostrobin.

### Claim 24 (depends on 16)

A formulation comprising microcapsules as defined in claim 16 and additional formulation auxiliaries.

### Claim 25 (depends on 24)

The formulation as defined in claim 24 further comprising an additional non-encapsulated pesticide.

### Claim 26 (depends on 25)

The formulation as defined in claim 25, wherein the encapsulated pesticide is pyraclostrobin and the additional non-encapsulated pesticide is selected from bixafen, fluxapyroxad, isopyrazam, penflufen, penthiopyrad, sedaxane, tricyclazole, isoprothiolane, carpropamid, epoxiconazole, prothioconazole, difenoconazole, propiconazole, isotianil, kasugamycin, carpropamid, probenazole and diclocymet.

### Claim 27 (depends on 24)

A method of combating phytopathogenic pests in a paddy rice field, comprising treating the paddy rice field with a formulation according to claim 24.

### Claim 28 (depends on 24)

A method of increasing the health of rice plants in a paddy rice field, comprising treating the paddy rice field with a formulation according to claim 24.

### Claim 29 (depends on 27)

The method according to claim 27, wherein the pest are phytophathogenic fungi.

### Claim 30 (depends on 27)

The method according to claim 27, wherein the pest are phytophathogenic insects.

### Claim 31 (depends on 27)

The method according to claim 27, wherein the average particle size of the capsules is from 0.5 to 8 μm.

### Claim 32 (depends on 27)

The method according to claim 27, wherein the solvent in the core shell of the microcapsules comprises at least on non-polar solvent.

### Claim 33 (depends on 27)

The method according to claim 27, the microcapsules additionally comprise a surfactant in the core.

### Claim 34 (depends on 27)

The method according to claim 27, wherein at least one encapsulated pesticide is a strobilurin or a carboxamide fungicide.

### Claim 35 (depends on 34)

The method according to claim 34, wherein the strobilurin is pyraclostrobin.