B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 71/06 (2006.01) A61K 9/70 (2006.01) A61M 37/00 (2006.01) B01D 67/00 (2006.01) B01D 69/14 (2006.01) B01D 71/54 (2006.01) B01D 71/56 (2006.01) B01D 71/74 (2006.01)
Patent
CA 2145646
A phase-separated membrane in which the control of permeation rate and the control of permeation amount of a minute amount of drugs or other chemical substances are easily performed is provided. The phase-separated membrane has a constitution that a crosslinked gelatin phase 1 and an uncrosslinked segmented polyurethane phase 2 are present as a mixture. The segmented polyurethane phase is in a solid state at ordinary temperatures and is molten into a liquid state at 30 to 40°C which is near the temperature of human skin.
Membrane à séparation de phases facilitant la régulation de la vitesse de perméation d'une très faible quantité d'un médicament ou d'autres agents chimiques, et la régulation de la quantité du perméat médicamenteux. La membrane est structurée de telle sorte qu'une phase de gélatine pontée (1) et une phase de polyuréthane segmenté non ponté (2) soient mélangées mais séparées en phase. la phase de polyuréthane segmenté demeure solide aux températures normales mais se dissout et se transforme en liquide à une température comprise entre 30 et 40 DEG C, c'est-à-dire une température proche de celle de la peau de l'homme.
Riches Mckenzie & Herbert Llp
Takiron Co. Ltd.
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