Patch and patch preparation

Details Patch and patch preparation Patch and patch preparation

A - Human Necessities

61

K

A61K 9/70 (2006.01) A61K 31/405 (2006.01) C09J 11/06 (2006.01) C09J 109/00 (2006.01) C09J 153/02 (2006.01)

Patent

CA 2636965

The present invention aims to provide a patch and a patch preparation that do not require an acrylic polymer, and are capable of maintaining a large amount of an organic liquid component in an adhesive layer. The present invention provides a patch containing a support and an adhesive layer provided on at least one surface of the support, wherein the adhesive layer contains a synthetic rubber component other than polyisobutylene and solid at 25°C, a liquid rubber component having a crosslinkable functional group in a molecule, and an organic liquid component, the adhesive layer is crosslinked, and the liquid rubber component is contained in a proportion of less than 30 wt% relative to the total weight of the synthetic rubber component solid at 25°C and the liquid rubber component.

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