1. An adhesive composition for soft tissues, an adhesive composition for treating a wound or a composition for a wound dressing comprising a monomer (A), a polymer (B) and a polymerization-initiating composition (C) containing an organoboron compound and having a viscosity of from 0.4 to 75000 cP within 30 seconds after mixing components (A), (B) and (C). 2. The adhesive composition for milking soft tissues, the adhesive composition for milking a wound or the composition for milking a wound dressing according to claim 1, wherein the polymer (B) is a polymer mixture that includes polymer particles (b1) having a weight average molecular weight of 30 × 10 to 60 × 10 and specific surface area from 1.5 to 4.5 (m / g), polymer particles (b2) having a weight average molecular weight of 5 × 10 to 20 × 10 and specific surface area from 0.51 to 1.2 (m / g) and polymer particles (b3) having a weight average molecular weight of 5 × 10 to 20 × 10 and a specific surface area t 0.1 to 0.5 (m / g), and contains polymer particles (b1) in an amount of from 0 to 98% weight and polymer particles (b2) and polymer particles (b3) in a total of not less than 2% weight with respect to the total weight of the polymer particles (b1), (b2) and (b3), provided that the total number of polymer particles (b1), (b2) and (b3) is 100% by weight. 3. An adhesive composition for soft tissues, an adhesive composition for treating a wound or a composition for a wound dressing according to claim 1, wherein a film that is obtained from the aforementioned adhesive composition or composition for milking a wound dressing is formed 24 hours after preparation of the composition and has a thickness of at least 0, 1 μm, a length of at least 25 mm and a width of at least 2 mm, has a flexible modulus of elasticity measured at a test speed of 2 mm / min, not more than 750 MPa and rel�1. Адгезивная композиция для мягких тканей, адгезивная композиция доя обработки раны или композиция для раневой повязки, включающая мон
