Process for making polyimides from diamines and...

C - Chemistry – Metallurgy – 08 – G

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C08G 69/26 (2006.01) C08G 69/28 (2006.01) C08G 73/10 (2006.01) C08G 73/12 (2006.01)

Patent

CA 2280876

A process for making polyimide composition comprising reacting at least one diamine, at least one tetracarboxylic diacid diester, selected phosphoramide and at least one base catalyst to form at least one polyimide compound, said reaction carried out at a temperature from about 20 ~C to about 60 ~C and wherein the molar ratio of diamine:tetracarboxylic diacid diester:phosphoramide:base catalyst is in the range of 0.8-1.2:1:2.5-4.0:2.5- 4Ø

L'invention concerne un procédé de production d'une composition polyimide, qui consiste à mettre en réaction au moins un diamine, au moins un diester d'un diacide tétracarboxylique, un phosphoramide sélectionné, et au moins un catalyseur de base pour former au moins un composé polyimide, ladite réaction étant effectuée à une température comprise entre environ 20· et 60 ·C, la relation molaire de la diamine, du diester du diacide tétracarboxylique, du phosphoramide et du catalyseur de base étant comprise entre 0,8 et 1,2; 1; 2,5 et 4,0; 2,5 et 4,0; respectivement.

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