Patent ID: 8128946

Claim:
A medical tape preparation comprising a pressure-sensitive adhesive layer and a release liner laminated in that order on one side of a support, wherein the pressure-sensitive adhesive layer comprises a pressure-sensitive adhesive that is a mixture of two different pressure-sensitive adhesives: (A) a pressure-sensitive adhesive polymer A comprising a copolymer whose constituent components comprise 2-acetoacetoxyethyl methacrylate ester and another vinyl monomer, and (B) a pressure-sensitive adhesive polymer B comprising a copolymer different from pressure-sensitive adhesive polymer A, whose constituent components comprise an alkyl (meth)acrylate ester with a C 4-10 alkyl group and another vinyl monomer, wherein the proportion of the pressure-sensitive adhesive polymer A and the pressure-sensitive adhesive polymer B is 1:9-4:1, and the content of the 2-acetoacetoxyethyl methacrylate ester in pressure-sensitive adhesive polymer A is 10 wt %-45 wt % with respect to the total weight of the copolymer in pressure-sensitive adhesive polymer A.