C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 18/12 (2006.01) C08G 18/10 (2006.01) C08G 18/48 (2006.01) C08G 18/66 (2006.01) C08G 18/72 (2006.01) C08G 18/76 (2006.01)
Patent
CA 2439072
Isocyanate compositions with isocyanate functionality between 2.2 and 2.9 which include: a) 20 to 80% by weight of the reaction product of methylene diphenyl isocyanate (MDI) with an ethylene oxide (EO)/propylene oxide (PO) polyether polyol of functionality 2 to 8, an average molecular weight of 200 to 6000, and an ethylene oxide content of 20 to 90% having a free NCO group content of 26 to 33% by weight; and 20 to 80% by weight of an MDI polymer.
L'invention concerne des compositions d'isocyanate à fonctionnalité isocyanate comprise entre 2,2 et 2,9, qui contiennent : a) de 20 à 80 % en poids du produit de réaction de diisocyanate de diphényl méthane (MDI) avec un polyol de polyéther oxyde d'éthylène (EO)/oxyde de propylène (PO) présentant une fonctionnalité comprise entre 2 et 8, un poids moléculaire moyen compris entre 200 et 6000, et une teneur en oxyde d'éthylène comprise entre 20 et 90 %, avec une teneur en groupes NCO libres comprise entre 26 et 33 % en poids ; et de 20 à 80 % en poids d'un polymère MDI.
Fedeli Luca
Okon Sam Felix
Dow Global Technologies Inc.
Smart & Biggar
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