Laminated article bonded by a curable polyurethane elastomer and an organic polyisocyanate and process of manufacture

Claim 1

A PROCESS FOR THE MANUFACTURE OF LAMINATED ARTICLES WHICH COMPRISES BONDING AT LEAST ONE LAYER OF METAL SELECTED FROM THE GROUP CONSISTING OF STEEL, TINPLATE IRON, ALUMINUM, COPPER, ALUMINUM ALLOY AND BRASS TO A LAYER OF FOAMED POLYURETHANE MATERIAL WITH A CURABLE ADHESIVE COMPOSITION COMPRISING A SOLUTION OF A POLYURETHANE ELASTOMER AND AN ORGANIC POLYISOCYANATE SAID POLYURETHANE ELASTOMER BEING THE REACTION PRODUCT OF AN ORGAINC DIISOCYANATE AND A CRYSTALINE POLYESTERAMIDE IN SUBSTANTIALLY STIOCHIOMETRICALLY EQUIVALENT PROPORTIONS, SAID POLYESTERAMIDE HAVING A MELTING POINT NOT EXCEEDING 50* C. AND BEING THE REACTION PRODUCT OF DICARBOXYLIC ACIDS, GLYCOLS AND COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF AMINOALCOHOLS AND IAMINES IN PROPORTIONS THAT FROM 8 TO 64 MOLES OF DICARBOSYLIC ACIDS ARE USED FOR EVERY MOLE OF PRIMARY AMINO GROUPS, SAID POLYESTERAMIDE HAVNG AN ACID VALUE OF AT MOST 5 MG. KOH/G. AND A WATER CONTENT OF AT MOST 0.1% BY WEIGHT, AND SAID POLYURETHANE ELASTOMER HAVING A WILLIAMS PLASTICITY NUMBER OF BETWEEN 100 AND 550.