C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 18/08 (2006.01) C08G 18/36 (2006.01) C08G 18/69 (2006.01) C08G 18/76 (2006.01) C08K 3/34 (2006.01)
Patent
CA 2669125
The invention relates to a liquid 2K polyurethane composition composed of a polyol component comprising at least one hydrophobic polyol having a molecular weight of > 300 g/mol and a hydrophilic polyol having a molecular weight of < 500 g/mol and from 1 to 50% by weight of a pulverulent molecular sieve, and also a polyisocyanate or an NCO-reactive PU prepolymer. Additionally described is a process for casting moldings from plastic or metal, especially membrane substrates, using the inventive 2K polyurethane composition.
L'invention concerne une composition liquide de 2K-polyuréthanne à base d'un composant de polyol, ladite composition contenant au moins un polyol hydrophobe ayant un poids moléculaire > 300 g/mol et un polyol hydrophile ayant un poids moléculaire < 500 g/mol et de 1 à 50 % en poids d'un tamis moléculaire poudreux, ainsi qu'un polyisocyanate ou un prépolymère de PU réactif avec NCO. L'invention concerne également un procédé de coulage de corps moulés à partir de plastique ou de métal, notamment des substrats de membranes, en utilisant la composition de 2K-polyuréthanne selon l'invention.
Henkel Ag & Co. Kgaa
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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