# US 11,441,059 B2 · Propellant, propellant composition and sprayer

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- Number: US 11,441,059 B2
- Document ID: US11441059B2
- Status: Granted
- Kind: B2
- Application number: 16/830,502
- Filed: 2020-03-26
- Published: 2020-08-06
- Granted: 2022-09-13
- Earliest claimed: 2017-09-28
- Assignees: AGC Inc.
- Applicants: AGC Inc.
- Inventors: Hiroki Hayamizu; Masato Fukushima
- Web page: https://patentgrep.com/patent/US11441059B2

## CPC

- C09K 3/30: for aerosols (aerosol containers B65D83/14)
- B65D 83/141: specially adapted for specific contents or propellants
- C09K 2205/122: Halogenated hydrocarbons
- C09K 2205/126: Unsaturated fluorinated hydrocarbons
- C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- B65D: CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES

## Abstract

To provide a propellant which has sufficient propelling performance and of which a component to be sprayed imposes low environmental burden, a propellant composition and a sprayer. A propellant composition comprising a propellant containing 1-chloro-2,3,3,3-tetrafluoropropene and a pressurizing agent, and a sprayer comprising the propellant composition, a container in which the propellant composition is contained, and a spray unit to spray the propellant composition to the outside of the container.

## Claims

### Claim 1

A sprayer, comprising:
a container in which a propellant composition is contained, and a spray unit to spray the propellant composition to the outside of the container,
wherein the propellant composition contained in the container comprises a propellant containing 1-chloro-2,3,3,3-tetrafluoropropene and a pressurizing agent, wherein the boiling point of the pressurizing agent is at most 0° C. at 0.101 MPa and the vapor pressure of the propellant composition at 0° C. is higher than atmospheric pressure.

### Claim 2 (depends on 1)

The sprayer according to claim 1, wherein the pressurizing agent is at least one member selected from propane, butane, isobutane, dimethyl ether, a hydrofluoroolefin, a hydrofluorocarbon, carbon dioxide, compressed air, nitrous oxide and nitrogen.

### Claim 3 (depends on 1)

The sprayer according to claim 1, which further contains a spray chemical agent.

### Claim 4 (depends on 1)

The sprayer according to claim 1, wherein the proportion of 1 chloro-2,3,3,3-tetrafluoropropene to the total amount of the propellant composition is at least 10 mass % and at most 90 mass %.

### Claim 5 (depends on 1)

The sprayer according to claim 1, wherein the 1-chloro-2,3,3,3-tetrafluoropropene consists of (Z)-1-chloro-2,3,3,3-tetrafluoropropene and (E)-1-chloro-2,3,3,3-tetrafluoropropene, and the proportion of (Z)-1-chloro-2,3,3,3-tetrafluoropropene to the total amount of 1-chloro-2,3,3,3-tetrafluoropropene is at least 50 mass % and at most 99.99 mass %.

### Claim 6 (depends on 1)

The sprayer according to claim 1, containing the propellant composition and a discharge composition,
wherein the discharge composition is in liquid form and the propellant composition is at least partially in gaseous form,
wherein the container has a single opening, and the spray unit is attached to the container to seal the opening of the container and form a sealed space inside the container,
the spray unit comprising:
a button, a spray nozzle and a flow path connected to the button and the spray nozzle,
wherein the flow path extends from the button into the discharge composition, and the button is configured to discharge the propellant composition and the discharge composition from the sealed space through the spray nozzle when pressed.

### Claim 7 (depends on 6)

The sprayer according to claim 6, wherein the pressurizing agent consists of the 1-chloro-2,3,3,3-tetrafluoropropene and at least one selected from the group consisting of propane, butane, isobutene, dimethyl ether, 2,3,3,3-tetrafluoropropene and (E)-1,3,3,3-tetrafluoropropene.

### Claim 8 (depends on 6)

The sprayer according to claim 6, wherein the pressurizing agent consists of the 1-chloro-2,3,3,3-tetrafluoropropene and at least one selected from the group consisting of propane, butane, isobutene, and dimethyl ether.

### Claim 9 (depends on 6)

The sprayer according to claim 6, wherein a difference between the pressure at a temperature of 0° C. and a pressure at a temperature of 35° C. of the propellant composition is 0.8 MPaG or less, under the condition in which the pressure of the propellant composition is adjusted to 0.4 MPaG at a temperature of 35° C.

### Claim 10 (depends on 1)

The sprayer according to claim 1, wherein the pressurizing agent consists of the 1-chloro-2,3,3,3-tetrafluoropropene and at least one selected from the group consisting of propane, butane, isobutene, dimethyl ether, 2,3,3,3-tetrafluoropropene and (E)-1,3,3,3-tetrafluoropropene.

### Claim 11 (depends on 1)

The sprayer according to claim 1, wherein the pressurizing agent consists of the 1-chloro-2,3,3,3-tetrafluoropropene and at least one selected from the group consisting of propane, butane, isobutene, and dimethyl ether.

### Claim 12 (depends on 1)

The sprayer according to claim 1, wherein a difference between the pressure at a temperature of 0° C. and a pressure at a temperature of 35° C. of the propellant composition is 0.8 MPaG or less, under the condition in which the pressure of the propellant composition is adjusted to 0.4 MPaG at a temperature of 35° C.