Manufacture of pressure-sensitive adhesives

摘要

Pressure-sensitive adhesives are manufactured by reacting a mixture of A FROM 10 TO 90% BY WEIGHT OF A POLYOL HAVING A MOLECULAR WEIGHT OF FROM 300 TO 8,000 AND A HYDROXYL NUMBER OF FROM 20 TO 85 AND B FROM 5 TO 60% BY WEIGHT OF AN AMORPHOUS THERMOPLASTIC TACKIFIER RESIN HAVING A SOFTENING POINT OF FROM 40 DEG TO 140 DEG C and a molecular weight of from 200 to 7,500, with C FROM 5 TO 30% BY WEIGHT OF A POLYISOCYANATE MASKED WITH CH-acidic compounds, THE PERCENTAGES BY WEIGHT BEING BASED ON THE TOTAL WEIGHT OF COMPONENTS (A), (B) AND (C).