Universal adhesive surfacer/filler

Two-component polyurethane adhesive surfacers consisting of a polyol component (A) and a polyfunctional isocyanate component (B), wherein:

• (I) component (A) is liquid at room temperature and consists essentially of fillers and constituents containing isocyanate-reactive hydroxyl groups, and, optionally, one or more additives selected from the group consisting of drying agents, reaction accelerators, thickeners, antiagers, plasticizers, pigments, thixotropic agents, UV absorbers, stabilizers, flameproofing agents, retarders, and solvents, said constituents containing isocyanate-reactive hydroxyl groups comprising:
• (A1) an at least predominant content of branched-chain polyols containing ester and ether groups;
• (A2) glycerol esters which are liquid at room temperature and have an OH functionality of at least 2 to about 3 and which are esters of long-chain, optionally olefinically unsaturated, and at least predominantly OH-substituted fatty acids;
• and, optionally,
• (A3) low-viscosity monofunctional alcohols of distinctly oleophilic character, which are at least substantially involatile at room temperature;
• (II) component (B) consists essentially of polyfunctional isocyanates, and optionally, fillers, and, optionally, one or more additives selected from the group consisting of drying agents, reaction accelerators, thickeners, antiagers, plasticizers, pigments, thixotropic agents, UV absorbers, stabilizers, flameproofing agents, retarders, and solvents;
• (III) the total weight of fillers in components (A) and (B) is from 40 to 70% of the sum of the weight of the constituents containing isocyanate-reactive hydroxyl groups in component (A) and the total weight of fillers in components (A) and (B);
• and
• (IV) the mixture of components (A) and (B) produces a mixture that can be shaped immediately after mixing but which sets upon standing to a substantially waterproof elastic solid.