04917301 is referenced by 45 patents and cites 10 patents.

Volatile substances such as fragrances, perfumes, deodorizers, room freshener compositions and the like are dispensed in vapor phase from a container holding the substance in liquid phase at room temperature under atmospheric pressure. The container has a window covered with a microporous membrane with an active structure formed from a material having a critical surface tension that is below the surface tension of the liquid substance. The active membrane material has a critical surface tension that is below 22 dynes/cm and preferably below 20 dynes/cm while the surface tension of the liquid is at least 22 dynes/cm. One example is an ultraviolet irradiated polymer composition with 0.2 microns nominal pore size.

Title
Container with microporous membrane for dispensing vapor from volatile liquid
Application Number
7/271623
Publication Number
4917301
Application Date
November 15, 1988
Publication Date
April 17, 1990
Inventor
Marina A Munteanu
New York
NY, US
Agent
Brooks Haidt Haffner & Delahunty
Assignee
International Flavors & Fragrances
NY, US
IPC
A61L 9/04
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