SINGLE- AND TWOCOMPONENT POLYURETHANE ADHESIVES HAVING HIGH HYDROLYTIC AND TEMPERATURE RESISTANCE

摘要

Both types of adhesives can find application in the footwear, haberdashery, motor-car and furniture industries, as well as in the house for the adhesion of polyurethanes, PVC, highly plastified PVC, caoutchouk and rubber, natural and man-made leathers, textile, wood and others. The adhesives are produced at relatively low temperatures and less duration time (6-7 h) without using any adhesion promoters, surfactants, modifiers chain extenders, fillers, and others. For this purpose highly crystallizing polyesterurethane is used having molecular mass 42890 and a bouquet of solvents 82-85 wt.pts. By the addition of isocyanatecontaining compounds or compositions in quantity 5-8% in comparison with the single-component adhesives, two-component polyurethane adhesives are turned out. The single- and two-component polyurethane adhesives are turned out. The single- and two-component adhesives are characterized by high hydrolytic resistance at temperatures 20 + or - 2 degrees C and 70 + or - 2 degrees C and have higher temperature resistance in a wide temperature range, from -12 to 70 degrees C. 10 claims