Polyisocyanate based xerogels

Details Polyisocyanate based xerogels Polyisocyanate based xerogels

C - Chemistry, Metallurgy

08

G

C08G 18/02 (2006.01) C08G 18/09 (2006.01) C08G 18/54 (2006.01) C08G 18/62 (2006.01) C08J 9/28 (2006.01)

Patent

CA 2284472

Process for making polyisocyanate based xerogels by trimerisation of an organic polyisocyanate in an organic solvent in the presence of a (co)polymer containing an isocyanate-reactive group, gellation and drying of the obtained sol-gel.

Ce procédé de fabrication de xérogels à base de polyisocyanate consiste à trimériser un polyisocyanate organique dans un solvant organique, en présence d'un (co)polymère contenant un groupe réagissant avec isocyanate, à gélifier et à sécher le sol-gel obtenu.

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