Lightweight flexible imide foam and method of producing same

Details Lightweight flexible imide foam and method of producing same Lightweight flexible imide foam and method of producing same

C - Chemistry, Metallurgy

08

J

403/58

C08J 9/08 (2006.01) C08G 18/08 (2006.01) C08G 18/20 (2006.01) C08G 18/34 (2006.01) C08G 73/10 (2006.01)

Patent

CA 2021120

Described is a lightweight open-cell flexible foam having a density no greater than about 5 pounds per cubic foot, preferably less than 1.0 pound per cubic foot (pcf) comprising the reaction product of an organic polyisocyanate and a mixture of difunctional acids, acid anhydrides, and difunctional anhydrides in the presence of a tertiary amine triazine catalyst, which reactants during the manufacturing process generate carbon dioxide, wherein the ratio of imide to amide groups in the final product is greater than 1.

On décrit une mousse flexible à alvéoles ouverts légère ayant une masse volumique n'excédant pas environ 5 livres par pied cube, de préférence moins de 1,0 livre par pied cube, comprenant le produit de réaction d'un polyisocyanate organique et d'un mélange d'acides difonctionnels, d'anhydrides d'acide et d'anhydrides difonctionnels en présence d'un catalyseur de l'amine tertiaire triazine, lesquels réactifs génèrent, au cours du procédé de fabrication, du dioxyde de carbone, et où le rapport des groupes imide aux groupes amide dans le produit final est supérieur à 1.

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