Sustained release preparations

Details Sustained release preparations Sustained release preparations

1996-07-12

2000-05-23

Morris, Lesley D.

Fluid sprinkling, spraying, and diffusing

Slow diffusers

With wick or absorbent means removing liquid from holder

239 34, A61L 904

Patent

active

060656875

ABSTRACT:
Herein disclosed is a sustained release dispenser capable of uniformly releasing a volatile liquid ingredient over a long time period even when the amount of the liquid ingredient remaining in a container is reduced. According to an embodiment, the sustained release dispenser comprises a plastic container 4 having a liquid and volatile ingredient-permeable outer layer 1 and a liquid-absorbable inner layer 3 having the same material as those of the outer layer 1 and a liquid and volatile ingredient 2 enclosed in the plastic container. According to other embodiment, the sustained release dispenser comprises a plastic container 6 in which grooves 5 are formed on the inner wall and a volatile ingredient 2 accommodated in the container 6. According to other embodiment, the sustained release dispenser comprises a bag formed from a liquid permeable film 7 provided with a highly wettable film 8 on the inner surface thereof and a liquid sex pheromone 9 accommodated in the bag.

REFERENCES:
patent: 3698974 (1972-10-01), Rabussier et al.
patent: 4160335 (1979-07-01), Von Kohorn et al.
patent: 4834745 (1989-05-01), Ogawa et al.
patent: 4932155 (1990-06-01), Friemel et al.
patent: 5071704 (1991-12-01), Fischel-Ghodsian
patent: 5219121 (1993-06-01), Fox et al.
patent: 5359808 (1994-11-01), Fitsakis

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