Method for making polyetherimide

Details Method for making polyetherimide Method for making polyetherimide

C - Chemistry, Metallurgy

08

G

402/212, 402/9

C08G 73/10 (2006.01)

Patent

CA 1173594

ABSTRACT OF THE DISCLOSURE A method is provided for making polyetherimide based on the use of an organic carboxylic acid or phenolic catalyst which is added in a controlled manner to a solution polymerization mixture of an organic dianhydride and organic diamine. An enhancement of the rate of polymerization is achieved if the catalyst addition is effected after at least a predetermined amount of water of reaction is separated from the mixture.

385110

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