C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 18/32 (2006.01) C08G 18/36 (2006.01) C08G 18/42 (2006.01) C08G 18/48 (2006.01) C08G 18/66 (2006.01) C09J 175/06 (2006.01)
Patent
CA 2709353
A two-component polyurethane adhesive comprising a polyol component, which contains 2 to 30 wt. % of at least one polyester diol having a molecular weight greater than 1000 g/mole, 5 to 35 wt. % of at least one 3 to 14 functional polyol, 5 to 35 wt.-% hydrophobic polyols, 2 to 65 wt. % further additives or auxiliary agents, wherein the sum is to result as 100%, and a cross-linking component made of polyisocyanates in a NCO/OH ratio of 0.9:1 to 1.5:1, wherein the cross-linked adhesive has a Tg greater than 50%.
L'invention concerne un adhésif bicomposant à base de polyuréthanne, constitué d'un composant polyol contenant 2 à 30 % en poids d'au moins un polyesterdiol ayant un poids moléculaire supérieur à 1 000 g/mol, 5 à 35 % en poids d'au moins un polyol contenant 3 à 14 fonctions, 5 à 35 % en poids de polyols hydrophobes, 2 à 65 % en poids d'additifs ou adjuvants supplémentaires, la somme devant atteindre 100 %, ainsi qu'un composant de réticulation à base de polyisocyanates en un rapport NCO/OH de 0,9:1 à 1,5:1. Selon l'invention, l'adhésif réticulé présente une Tg supérieure à 50 °C.
Bogedain Dorothee Ursula
Gansow Michael
Schlingloff Nicole
Henkel Ag & Co. Kgaa
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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