| abstract |
PROBLEM TO BE SOLVED: To have an adhesive force necessary to prevent detachment from a skin-adhesive surface, to have an easy peeling property not to damage the skin surface at the time of peeling after use, and to have little adhesive residue. Provided is a gel adhesive for a patch. SOLUTION: An acidic group-containing polymer (A) containing 1 to 40% by weight of a carboxyl group-containing ethylenically unsaturated monomer and 20 to 90% by weight of a monomer represented by the following general formula (1), a base And a liquid component (C) compatible with both polymers, wherein the total weight of (A) and (B) and the weight ratio of (C) are 1.0: 0.25. ~ 1.0: 2.0 gel adhesive. CH2 = C (R1) COO (CH2CH (R2) O) nR3 Formula (1) (where R1 and R2 are hydrogen or methyl groups, and n is 2 or more and 1 An integer of 0 or less, R3 represents an alkyl group having 6 to 24 carbon atoms. ) |