A polyurethane prepolymer, the present invention, the polyisocyanate and a polyol and having a particle size polymers or one or more compounds having A) a polyisocyanate, and B) isocyanate-reactive moiety, C) of 5 to 50 microns and In the polyurethane prepolymer comprising the reaction product of a dispersion triol 10 to 60, based on the mass (weight)% content of the dispersion, the prepolymer is 0.8 to 2 particles of organic polymer that is non-reactive against has a free isocyanate content of .2%, and the mass of the dispersion triol and diol to triol (weight) ratio of the polyurethane prepolymer is 0.8 to 1.2. In another embodiment, there is provided a one-part adhesive composition, the present invention, one fluid and a possible catalyst to catalyst polyurethane prepolymers of the present invention, the reaction of water with isocyanate moieties is the type adhesive composition. In another embodiment, there is provided a method of bonding together two substrates, the present invention, the adhesive is applied and brought into contact with at least one of these substrates the adhesive composition of the present invention Before curing, the method involves adhering together of those substrates by curing the adhesive and then brought into contact with the substrate thereof along a portion of the substrate which adhesive is applied is.
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