USE OF LIQUID, COLD-HARDENING POLYURETHANE-UREA- FORMING COMPONENTS FOR CORROSION-INHIBITING, WEAR- RESISTANT COATINGS ON METAL AND PLASTICS SURFACES AND MOLDINGS AND ON STONE AND CONCRETE

摘要

Mo-2434LeA 20,981THE USE OF LIQUID, COLD-HARDENING POLYURETHANE-UREA-FORMING COMPONENTS FOR CORROSION-INHIBITING,WEAR-RESISTANT COATINGS ON METAL AND PLASTICSSURFACES AND MOLDINGS AND ON STONE AND CONCRETEABSTRACT OF THE DISCLOSUREThis invention relates to special combinationsof polyurethane-urea-forming starting components whichprovide for the solvent-free processing of componentsthat are liquid at room temperature, show very rapidgelation, are cold-hardening and are eminently suitablefor corrosion-inhibiting wear prevention by casting,centrifugal casting or spraying by means of multicompo-nent metering units onto large, even vertical metalsurfaces and moldings and for lining the interior oftubes and also for the elastic coating of plastics,foams and natural stone and of screed surfaces,concrete, steel-reinforced concrete and masonry. Thecomponents in question are liquid, relatively lowviscosity mixtures of polymer-containing or polyadduct-containing polypropylene oxide polyols and/or ethyleneoxide-containing polypropylene oxide polyols having asmall content of special, low-melting, readily solublearomatic diamines and tertiary amine catalysts ascomponent (A) which are reacted at room temperaturewith liquid polyisocyanates based on diphenyl methanediisocyanate or their NCO-prepolymers with polyetherpolyo's as component (B).