C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 18/28 (2006.01) C08G 18/79 (2006.01)
Patent
CA 2646681
The invention relates to crosslinking compositions for polyurethane elastomers, consisting of a polyol component comprising - 30 to 80% by weight of polyether diols and/or polyester diols, - 10 to 40% by weight of polyols having at least 3 OH groups and - 1 to 50% by weight of a monofunctional compound which comprises an isocyanate-reactive group, and an isocyanate component containing at least one trifunctional isocyanate, where the NCO/OH ratio should be between 0.9 and 1.2. Also described is the use of the corresponding crosslinked PU elastomers as shaped bodies.
L'invention concerne une composition réticulante pour élastomère de polyuréthanne, constituée d'un composant polyol comprenant de 30 à 80 % en poids d'un polyéther et/ou d'un polyesterdiol, de 10 à 40 % en poids d'un polyol présentant au moins 3 groupements OH, ainsi que de 1 à 50 % en poids d'un composé monofonctionnel comprenant un groupement réactif vis-à-vis de l'isocyanate et d'un composant isocyanate comprenant un isocyanate au moins trifonctionnel, le rapport NCO/OH étant compris entre 0,9 et 1,2. L'invention concerne également l'utilisation de l'élastomère de PU réticulé en tant que corps moulé.
Kasper Dirk
Poel Andre Te
Poelitz Stefan
Henkel Ag & Co. Kgaa
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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