Crock-proof suedes and methods of making same

Claim 1

THE METHOD OF RENDERING COLORED SUEDE LEATHER SUBSTANTIALLY NON-CROCKING, WHICH COMRPRISES APPLYING TO THE DISCRETE COLORED POLE FIBER SURFACE OF THE SUEDE WHILE THE FIBERS ARE IN A MOIST CONDITION, A DILUTE SOLVENT SOLUTION OF A LIQUID POLYURETHANE CONTAINING REACTIVE ISOCYANATE GROUPS AND BEING A REACTION PRODUCT OF AN ORGANIC DIISOCYANATE AND A BIFUNCTIONAL REACTANT HAVING TERMINAL ALCOHOLIC HYDROXYL GROUPS IN AN AMOUNT TO PRODUCE A FILM ON SAID FIBERS, THE WEIGHT OF SAID FILM PER SQUARE FOOT OF SAID SURFACE BEING NOT MORE THAN 1 GRAM, AND CURING THE POLYURETHANE BY MEANS OF MOISTURE IN THE SUEDE WHILE EVAPORATING THE SOLVENT FROM THE POLYURETHANE TO PROVIDE A SUEDE LEATHER HAVING A PLLY URETHANE FILM SURROUNDING AND ENVELOPING THE INDIVIDUAL FIBERS BUT NOT BRIDGING ADJACENT FIBERS, THUS RETAINING THE ORIGINAL VELVETY HAND OF THE SUEDE.