The Procter Gamble Company

Bee Ting Low

Tai-Shung Chung

Kumaresh Govindan Radhakrishnan

Calum Macbeath

Gui Min Shi

Qunhui Guo

Luciano M Parrinello

An apparatus for air freshening in an interior occupancy space. The apparatus has a reservoir containing a volatile composition for air freshening and/or malodor removal and a composite membrane in fluid communication with the volatile composition. The composite membrane has a first side facing the reservoir and a second side opposite the first side. At least one of the first side and the second side has a diffusion regulating coating, the diffusion regulating coating including a hydrophobic/oleophobic material having at least one fluoro-alkyl group. The volatile composition includes at least 20% of perfume raw materials by weight of the composition, the at least 20% of perfume raw materials having an average vapor pressure equal to or greater than 0.01 torr at 25 degrees Celsius. The apparatus has an average vapor release rate from 0.2 mg/hr*cmto 5 mg/hr*cmat an air flow rate of 5 m/s and a temperature of 21 degrees Celsius.

Apparatus and method for air freshening

Apparatus for delivering a volatile material including a reservoir with an opening for containing a volatile material. A first membrane is disposed adjacent the opening of the reservoir, and a second membrane disposed adjacent the opening such that the first membrane is disposed between the second membrane and the reservoir, wherein at least a portion of the second membrane is spaced apart from the first membrane forming a vapor chamber between the first and second membranes.

Apparatus and method for delivering a volatile material

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Singapore, Singapore

Bee Ting Low