a dermatologically - acceptable , moisture vapor - permeable , pressure - sensitive adhesive composition that is a single - phase solid at ambient temperature and resists dissolution when exposed to water , comprises a polymer adhesive which is the product of a process comprising the steps of chain extending a water - soluble derivatized capped prepolymer which comprises a first terminal group and a low - temperature curable group , until the resultant polymer attains a determined level of tackiness , and then subjecting the polymer to low - temperature curing . the adhesive is used to advantage in medical products like adhesive bandages , plasters , dressings and surgical drapes , and can dissolve water - soluble bio - active additives .