Nitto-Denko Corporation

Masato Nishimura

Kensuke Matsuoka

Katsuhiro Okada

Hitoshi Akemi

Yoshihiro Iwao

Kazuhisa Ninomiya

Hidetoshi Kuroda

Yuji Saeki

Yoshiaki Ito

Mitsuhiko Hori

Takateru Muraoka

Keigo Inosaka

Yoshifumi Hosaka

Kazumitsu Yamamoto

Yasuaki Okada

Shiro Satoda

Sachiko Terashi

Yuji Kawaharada

Yoshitaka Inoue

Hiroo Maeda

Masayasu Tanaka

The invention provides a patch and a patch preparation having an adhesive layer with a high adhesive force, wherein the hydrophobic adhesive layer does not bloom even when an organic fluid component having high polarity is contained therein. The patch contains a support and an adhesive layer on at least one surface of the support, wherein the adhesive layer contains a synthetic rubber having a viscosity average molecular weight of 500,000-1,600,000, an organic fluid component having high polarity, a tackifier, and magnesium aluminometasilicate. In the patch preparation, the above-mentioned adhesive layer further contains a drug.

Patch and patch preparation

The invention provides a patch and a patch preparation having an adhesive layer with a high adhesive force, wherein the hydrophobic adhesive layer does not bloom even when an organic fluid component having high polarity is contained therein. The patch contains a support and an adhesive layer on at least one surface of the support, wherein the adhesive layer contains a synthetic rubber having a viscosity average molecular weight of 1,700,000-6,500,000, an organic fluid component having high polarity, a tackifier, and magnesium aluminometasilicate. In the patch preparation, the above-mentioned adhesive layer further contains a drug.

The problem of the present invention is to provide a patch preparation containing a drug (excluding 2-(4-ethyl-1-piperazinyl)-4-(4-fluorophenyl)-5,6,7,8,9,10-hexahydrocycloocta[b]pyridine and a physiologically acceptable acid addition salt thereof), which is superior in both the skin permeability of a drug, and adhesiveness in the presence of water. A patch preparation containing a support and an adhesive layer on one surface of the support, wherein the adhesive layer contains a drug excluding 2-(4-ethyl-1-piperazinyl)-4-(4-fluorophenyl)-5,6,7,8,9,10-hexahydrocycloocta[b]pyridine and a physiologically acceptable acid addition salt thereof, an acrylic polymer, lactic acid and magnesium aluminometasilicate.

Patch preparation

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.

Adhesive preparation containing fentanyl

The present invention provides an adhesive material to be adhered to the skin etc., which maintains, for a certain time period after adhesion thereof to the skin surface, suitable adhesiveness that does not allow easy peeling or cause irritation to the skin, and which permits, when it is to be peeled off from the skin surface after the lapse of a desired certain time period, easy peeling without causing pain or physical irritation, and an adhesive preparation containing the adhesive material and a percutaneously absorbable drug in the adhesive layer. Specifically, the present invention provides an adhesive material containing a support and an adhesive layer laminated on one surface of the support, wherein the adhesive layer has an apparent viscosity at 30&#xb0; C. of 0.2&#xd7;10to 10&#xd7;10Pa&#xb7;s and comprises two kinds of synthetic rubbers having different flowability.

Adhesive material and adhesive preparation

The present invention aims at providing an adhesive preparation wherein a drug is sufficiently dissolved in an adhesive layer and is not easily separated from the adhesive layer even during preservation of the adhesive preparation. The present invention provides an adhesive preparation having an adhesive layer on at least one surface of a support, wherein the adhesive layer comprises a first synthetic rubber having a viscosity average molecular weight of 1,600,000-6,500,000, a drug, an organic liquid component and a tackifier. The present invention further provides the aforementioned adhesive preparation, wherein the organic liquid component is contained in the adhesive layer in a proportion of 20 wt % or above relative to the total weight of the adhesive layer.

Drug containing adhesive preparation

Growing community of inventors

Ibaraki, Japan

Masato Nishimura