Fluid sprinkling – spraying – and diffusing – Slow diffusers – Gravity flow of liquid from supply holder
Patent
1988-11-15
1990-04-17
Kashnikow, Andres
Fluid sprinkling, spraying, and diffusing
Slow diffusers
Gravity flow of liquid from supply holder
239 45, 239 57, A61L 904
Patent
active
049173014
ABSTRACT:
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.
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patent: 3169705 (1965-02-01), Geiger
patent: 3727840 (1973-04-01), Nigro
patent: 3790081 (1974-02-01), Thornton
patent: 4413779 (1983-11-01), Santini
Forman Michael J.
International Flavors & Fragrances Inc.
Kashnikow Andres
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