Adhesive composition for soft tissues, adhesive composition for wound dressing or wound dressing composition

An adhesive composition for soft tissues, an adhesive composition for wound dressing or a wound dressing composition, comprising a monomer (A), a (meth)acrylate uncrosslinked polymer (B) and a polymerization initiator composition (C) containing an organoboron compound, and

• having a viscosity of 0.4 to 75,000 cp within 30 seconds after mixing of the components (A), (B) and (C),
• wherein the polymer (B) is a polymer mixture which comprises polymer particles (b1) having a weight-average molecular weight of 30×104 to 60×104 and a specific surface area of 1.5 to 4.5 (m2/g), polymer particles (b2) having a weight-average molecular weight of 5×104 to 20×104 and a specific surface area of 0.51 to 1.2 (m2/g) and polymer particles (b3) having a weight-average molecular weight of 5×104 to 20×104 and a specific surface area of 0.1 to 0.5 (m2/g), contains the polymer particles (b1) in an amount of 10 to 60% by weight, and contains the polymer particles (b2) and the polymer particles (b3) in the total amount of not less than 2% by weight based on the total weight of the polymer particles (b1), (b2) and (b3), with the proviso that the total amount of the polymer particles (b1), (b2) and (b3) is 100% by weight,
• and wherein the amount of the component (B) is in the range of 28 to 55 parts by weight, based on 100 parts by weight of the total amount of the monomer (A), the polymer (B) and the polymerization initiator composition (C).