Patch and patch preparation

摘要

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 polyisobutylene, a liquid rubber component having a crosslinkable functional group in a molecule, and an organic liquid component, the adhesive layer is crosslinked.