C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 18/78 (2006.01) C08G 18/20 (2006.01) C08G 18/28 (2006.01) C08G 18/66 (2006.01) C08G 18/80 (2006.01)
Patent
CA 2641427
This invention relates to polyurethane elastomers and to a process for their production. These elastomers comprise the reaction product of a polyisocyanate component comprising an allophanate modified (cyclo)aliphatic polyisocyanate which has an NCO group content of about 15 to about 35% or a prepolymer thereof, with an isocyanate-reactive component comprising one or more polyether polyols which is free of amine groups, and a low molecular weight organic compound containing two hydroxyl groups and which is free of amine groups, in the presence of one or more catalysts.
L'invention concerne des élastomères de polyuréthane et un procédé destiné à leur production. Ces élastomères comprennent le produit de la réaction entre un composant polyisocyanate comprenant un polyisocyanate (cyclo)aliphatique modifié par un allophanate ayant une teneur en groupe NCO comprise entre environ 15 et environ 35% ou un de ses prépolymères, avec un composant réactif aux isocyanates comprenant un ou plusieurs polyols de polyéther exempt de groupes amine, et un composé organique à faible poids moléculaire contenant deux groupes hydroxyle, exempt de groupes amine, en présence d'un ou plusieurs catalyseurs.
Garrett James
Harasin Stephen J.
Kinney Carol L.
Roesler Richard R.
Starcher Rick V.
Bayer Materialscience Llc
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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