# US 2014/0191056 A1 · Method for delivering a volatile material

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- Number: US 2014/0191056 A1
- Document ID: US20140191056A1
- Status: Published application
- Kind: A1
- Application number: 14/203,599
- Filed: 2014-03-11
- Published: 2014-07-10
- Earliest claimed: 2009-04-16
- Assignees: The Procter & Gamble Company
- Applicants: The Procter & Gamble Company
- Inventors: Dana Paul GRUENBACHER; Jason John OLCHOVY; Scott Kendyl STANLEY; James Douglas STILL; Rhonda Jean JACKSON; Zaiyou LIU; Walter SORDO; Stefano DEFLORIAN; Cedric MORHAIN
- Web page: https://patentgrep.com/patent/US20140191056A1

## CPC

- A61L 9/04: using substances evaporated in the air without heating
- A61L 9/12: Apparatus, e.g. holders, therefor
- B60H 3/0028: {on or near an air outlet}
- A61L 2209/131: Semi-permeable membranes
- B60H 2003/0057: {Servicing means therefor, e.g. for renewal of substances}
- A61L: METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES (preservation of bodies or disinfecting characterised by the agents employed A01N; preserving, e.g. sterilising, food or foodstuffs A23; preparations for medical, dental or toiletry purposes A61K)
- B60H: ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES

## Abstract

A method of delivering a volatile material to the atmosphere in a continuous manner is disclosed. The method includes providing a delivery engine having a reservoir that includes a volatile material mixture. The volatile material mixture includes about 40% to about 100%, by total weight, of the volatile materials each having a vapor pressure at 25° C. of less than about 0.1 ton. The delivery system also includes a microporous membrane enclosing the reservoir, wherein the microporous membrane comprises an average pore size of about 0.01 to about 0.03 microns.

## Claims

### Claim 1

A method of delivering a volatile material comprising the step of providing a delivery engine comprising:
a. a reservoir comprising a volatile material mixture, said volatile material mixture comprising about 40% to about 100%, by total weight, of volatile materials each having a vapor pressure at 25° C. of less than about 0.1 ton;
b. a microporous membrane enclosing said reservoir, said microporous membrane comprising an evaporative surface area of about 2 cm2 to about 35cm2 and an average pore size of about 0.01 to about 0.03 microns.

### Claim 2 (depends on 1)

The method of claim 1, wherein said volatile material mixture comprises about 60% to about 90%, by total weight, of volatile materials each having a vapor pressure at 25° C. of about 0.01 to about 0.3 ton.

### Claim 3 (depends on 1)

The method of claim 1, wherein said volatile material mixture comprises:
a. 0% to about 15%, by total weight, of volatile materials each having a vapor pressure at 25° C. of about 0.004 torr to about 0.035 torr;
b. about 0% to about 25%, by total weight, of volatile materials each having a vapor pressure at 25° C. of about 0.1 torr to about 0.325 torr; and
c. about 65% to about 100%, by total weight, of volatile materials each having a vapor pressure at 25° C. of about 0.035 torr to about 0.1 torr.

### Claim 4 (depends on 1)

The method of claim 1, wherein said volatile material mixture comprises a viscosity of about 1.0 cP to less than about 15 cP.

### Claim 5 (depends on 1)

The method of claim 1, wherein said volatile material mixture comprises a surface tension of about 19 mN/m to less than about 27 mN/m.

### Claim 6 (depends on 1)

The method of claim 1, wherein said microporous membrane comprises an average pore size of about 0.02 microns.

### Claim 7 (depends on 1)

The method of claim 1, wherein said volatile material mixture comprises a perfume material.

### Claim 8 (depends on 1)

The method of claim 1, wherein said delivery engine further comprises a collection basin in fluid communication with said microporous membrane and said reservoir upon rupturing said rupturable substrate.

### Claim 9 (depends on 1)

The method of claim 1, wherein said microporous membrane encloses said rupturable substrate and said reservoir.

### Claim 10 (depends on 1)

The method of claim 1 further comprising the step of compressing said microporous membrane and said rupture element to breach said rupturable substrate.

### Claim 11 (depends on 1)

The method of claim 1, wherein said method further comprises the step of inserting said delivering engine in a housing, said housing comprising a notch to compress said microporous membrane and said rupture element.

### Claim 12 (depends on 1)

The method of claim 1, wherein said rupture element comprises a compressible flange.