# US 2021/0329911 A1 · Aerosol sprayer for insect pest mating disruption

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- Number: US 2021/0329911 A1
- Document ID: US20210329911A1
- Status: Published application
- Kind: A1
- Application number: 17/243,113
- Filed: 2021-04-28
- Published: 2021-10-28
- Earliest claimed: 2020-04-28
- Assignees: Shin-Etsu Chemical Co., Ltd.
- Applicants: Shin-Etsu Chemical Co., Ltd.
- Inventors: Naoki ISHIBASHI; Yuki MIYAKE; Takeshi KINSHO
- Web page: https://patentgrep.com/patent/US20210329911A1

## CPC

- A01N 25/06: Aerosols
- A01M 7/0014: {Field atomisers, e.g. orchard atomisers, self-propelled, drawn or tractor-mounted}
- A01N 35/02: containing aliphatically bound aldehyde or keto groups, or thio analogues thereof; Derivatives thereof, e.g. acetals
- A01N 49/00: Biocides, pest repellants or attractants, or plant growth regulators, containing compounds containing the group [IMAGE cpc-sch-A01N-0948.gif], wherein m+n>=1, both X together may also mean —Y— or a direct carbon-to-carbon bond, and the carbon atoms marked with an asterisk are not part of any ring system other than that which may be formed by the atoms X, the carbon atoms in square brackets being part of any acyclic or cyclic structure, or the group [IMAGE cpc-sch-A01N-0949.gif], wherein A means a carbon atom or Y, n>=0, and not more than one of these carbon atoms being a member of the same ring system, e.g. juvenile insect hormones or mimics thereof (containing hydrocarbons A01N27/00)
- 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
- A01M: CATCHING, TRAPPING OR SCARING OF ANIMALS (appliances for catching swarms or drone-catching A01K57/00; fishing A01K69/00 - {A01K99/00}; biocides, pest repellants or attractants A01N); APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS

## Abstract

A composition for forming an aerosol, an aerosol sprayer for insect pest mating disruption, and a method for insect pest mating disruption, thereby reducing disadvantageous effects caused by falling to a ground surface and oxidative decomposition of the sprayed particles. More specifically, the composition including an aerosol stock solution containing an aliphatic linear aldehyde having 10 to 20 carbon atoms and a non-alcoholic diluent, and a propellant, wherein a weight ratio of the aerosol stock solution to the propellant is from 45:55 to 65:35; the sprayer including the composition and a pressure resistant container for enclosing the composition therein, wherein sprayed particles at a spray travel distance of 15 cm have a median particle size (Dv50) at 25° C. of from 35 to 65 μm by a volume-based cumulative particle size distribution and; the method using the aerosol sprayer; and the like.

## Claims

### Claim 1

A composition for forming an aerosol, the composition comprising:
an aerosol stock solution containing an aliphatic linear aldehyde having 10 to 20 carbon atoms and a non-alcoholic diluent; and
a propellant;
wherein a weight ratio of the aerosol stock solution to the propellant is from 45:55 to 65:35.

### Claim 2 (depends on 1)

The composition for forming an aerosol according to claim 1, wherein the non-alcoholic diluent is selected from hydrocarbons.

### Claim 3 (depends on 2)

The composition for forming an aerosol according to claim 2, wherein the non-alcoholic diluent is heptane.

### Claim 4 (depends on 1)

The composition for forming an aerosol according to claim 1, wherein the aliphatic linear aldehyde is Z11Z13-hexadecadienal.

### Claim 5 (depends on 1)

An aerosol sprayer for insect pest mating disruption, the sprayer comprising:
the composition of claim 1; and
a pressure-resistant container for enclosing the composition therein;
wherein sprayed particles at a spray travel distance of 15 cm have a median particle size (Dv50) at 25° C. of from 35 to 65 μm in a volume-based cumulative particle size distribution.

### Claim 6 (depends on 5)

The aerosol sprayer for insect pest mating disruption according to claim 5, wherein the sprayed particles at a spray travel distance of 15 cm have a 90% particle size (Dv90) at 25° C. of from 65 to 150 μm in the volume-based cumulative particles size distribution.

### Claim 7 (depends on 5)

The aerosol sprayer for insect pest mating disruption according to claim 5, wherein the sprayed particles at a spray travel distance of 15 cm have a 10% particle size (Dv10) at 25° C. of from 5 to 35 μm in the volume-based cumulative particle size distribution.

### Claim 8 (depends on 5)

A method for insect pest mating disruption, the method comprising steps of:
installing the aerosol sprayer of claim 5 at a concentration of 0.5 to 4 sprayers/acre in a field; and
spraying the composition in the aerosol sprayer into a field.

### Claim 9 (depends on 8)

The method for insect pest mating disruption according to claim 8, wherein a sprayed volume of the composition per spray event is 20 to 100 μL, and each spray event is carried out at an interval of from 5 to 20 minutes.

### Claim 10 (depends on 9)

The method for insect pest mating disruption according to claim 9, wherein the aliphatic linear aldehyde contained in the sprayed volume per spray event is in an amount of 0.3 to 5 mg.

### Claim 11 (depends on 1)

A method for insect pest mating disruption, the method comprising a step of spraying the composition of claim 1 into a field in such a manner that sprayed particles at a spray travel distance of 15 cm have a median particle size (Dv50) at 25° C. of from 35 to 65 μm in a volume-based cumulative particle size distribution.

### Claim 12 (depends on 11)

The method for insect pest mating disruption according to claim 11, wherein the sprayed particles at a spray travel distance of 15 cm have a 90% particle size (Dv90) at 25° C. of from 65 to 150 μm in the volume-based cumulative particle size distribution.

### Claim 13 (depends on 11)

The method for insect pest mating disruption according to claim 11, wherein the sprayed particles at a spray travel distance of 15 cm have a 10% particle size (Dv10) at 25° C. of from 5 to 35 μm in the volume-based cumulative particles size distribution.

### Claim 14 (depends on 11)

The method for insect pest mating disruption according to claim 11, wherein a sprayed volume of the composition per spray event is from 20 to 100 μL and each spray event is carried out at an interval of from 5 to 20 minutes.

### Claim 15 (depends on 14)

The method for insect pest mating disruption according to claim 14, wherein the aliphatic linear aldehyde contained in the sprayed volume per spray event is in an amount of 0.3 to 5 mg.