Novel composition from a polyisocyanate and a polyether...

Details Novel composition from a polyisocyanate and a polyether... Novel composition from a polyisocyanate and a polyether...

C - Chemistry, Metallurgy

08

G

C08G 18/10 (2006.01) C08G 18/28 (2006.01) C08G 18/66 (2006.01) C08G 18/76 (2006.01) C08G 18/79 (2006.01) C08K 5/00 (2006.01) C08K 5/21 (2006.01) C08L 75/04 (2006.01)

Patent

CA 2706081

Composition obtained by reacting a polyisocyanate which is a diphenylmethane diisocyanate, optionally comprising a homologue comprising 3 or more isocyanate groups, and/or a variant of such diisocyanate with a monoalkylether of a polyoxyalky-lene monoamine having an average molecular weight of 550-3000 and an oxyethylene content of more than 50 % by weight, calcu-lated on the weight of the monoamine, and the alkyl group having 1-4 carbon atoms at index of 100-250. It is used as plasticizer, particularly in polyurethane and/or polyurea materials.

Cette invention concerne une composition obtenue en faisant réagir un polyisocyanate qui est un diphénylméthane diisocyanate, comprenant éventuellement un homologue contenant 3 groupes isocyanate ou plus, et/ou un variant de ce diisocyanate avec un monoalkyléther d'un polyoxyalkylène monoaminé ayant un poids moléculaire moyen de 550 à 3 000 et une teneur en oxyéthylène de plus de 50 % en poids, le calcul étant réalisé par rapport au poids de la monoamine, et le groupe alkyle ayant de 1 à 4 atomes de carbone à un indice de 100 à 250. Cette composition est utilisée comme plastifiant, en particulier dans des matériaux en polyuréthane et/ou en polyurée.

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