Patent ID: 11903939
Assignee: MEDRX CO., LTD.
Field: Pharmaceuticals (Chemistry)
Classification: CPC A | IPC A

Claim 0:
1. A patch preparation comprising a plaster disposed on a support, wherein
the plaster comprises a base material, a medicament, one or more additives, and a solvent comprising a combination of ethyl acetate and n-heptane, and
an amount of the solvent is 15% to 35% by weight of the plaster,
an amount of n-heptane is 10% to 28% by weight of the plaster, and
the base material is selected from a rubber polymer or a combination of a rubber polymer and an acrylic polymer; wherein the patch preparation exhibited adhesion to skin immediately after preparing and no adhesion to skin after 1 hour of exposure to air following the preparation of the patch.