C - Chemistry – Metallurgy – 09 – J
Patent
C - Chemistry, Metallurgy
09
J
402/140
C09J 175/04 (2006.01) C08G 18/28 (2006.01) C08J 5/12 (2006.01)
Patent
CA 1251297
Mo-2868 LeA 24,211 PROCESS FOR THE PREPARATION OF ADHESIVES AND THEIR USE FOR THE FORMATION OF BONDS ABSTRACT OF THE DISCLOSURE The preparation and use of polyurethane-based hot melt adhesives which are cross-linked under the influence of heat comprising reacting a) a polyisocyanate component containing at least one organic polyisocyanate with b) a polyol component containing b1) at least one organic polyhydroxyl compound having a hydroxyl number of 50 to 400 and optionally b2) at least one organic polyhydroxyl compound having a hydroxyl number above 400 used in a quantity of 0 to 100 hydroxyl equivalents percent, based on component b1), optionally with the addition of c) auxiliary agents and additives conventionally used in polyurethane chemistry and/or the technology of adhesives is disclosed. The reaction is characterized in that the equivalent ratio of isocyanate groups of component a) to all the isocyanate reactive groups present in component b) is from 1:1 to 1.8:1, and in that component b) further contains b3) at least one organic compound containing a ketoxime group in an amount of 1 to 30% by weight, based on the total weight of component b). Mo-2686
523156
Gronemeier Uwe F.
Konig Eberhard
Zollner Robert
Aktiengesellschaft Bayer
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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