A - Human Necessities – 61 – L
Patent
A - Human Necessities
61
L
A61L 15/58 (2006.01) A61F 13/02 (2006.01) A61K 31/4468 (2006.01) A61L 15/44 (2006.01)
Patent
CA 2514635
The present invention provides a Fentanyl-containing percutaneously absorbable adhesive preparation, which is obtained from economic starting materials, has a constitution simpler than that of conventional ones, has sufficient skin permeability, and which permits control of skin permeability by changing the mixing ratio of two kinds of polyisobutylene having different molecular weights, a tackifier and an organic liquid. Specifically, the present invention provides a percutaneously absorbable adhesive preparation comprising a support and an adhesive layer laminated on one surface thereof, wherein the adhesive layer comprises Fentanyl, two kinds of polyisobutylene having different molecular weights, a tackifier and an organic liquid compatible with the aforementioned two kinds of polyisobutylene and the aforementioned tackifier.
Akemi Hitoshi
Hori Mitsuhiko
Hosaka Yoshifumi
Kuroda Hidetoshi
Matsuoka Kensuke
Fetherstonhaugh & Co.
Nitto Denko Corporation
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