C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 18/10 (2006.01) C08G 18/22 (2006.01) C09J 175/04 (2006.01)
Patent
CA 2648707
The present invention relates to a two-component adhesive or sealant composition which consists of a first component (K1) comprising a prepolymer P, which displays an isocyanate group, and an acceleration component (K2). The said acceleration component (K2) displays a catalyst, which catalyzes the reaction of isocyanate groups and which is a lead, zinc, or iron (III) complex, as well as compounds displayed on isocyanate-reactive groups that are at most 1% by weight. In particular, adhesives with a high cure velocity and good adhesion can be obtained and adapted very easily to ambient conditions.
La présente invention concerne une composition de matière d'étanchéité ou adhésive à deux composants, ladite composition comprenant un premier composant (K1) contenant un prépolymère P comportant les groupes d'isocyanate, et un composant activateur (K2). Le composant activateur (K2) comporte un catalyseur qui catalyse la réaction des groupes d'isocyanate, et qui est un complexe de plomb ~ zinc ou de fer (III), ainsi que maximum 1 % en poids de composés comportant des groupes réactifs d'isocyanate. On obtient en particulier des matières adhésives dotées d'une vitesse élevée de durcissement et d'une bonne adhérence, pouvant s'adapter facilement aux conditions ambiantes.
Konstanzer Martin
Schlumpf Michael
Gowling Lafleur Henderson Llp
Sika Technology Ag
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