Method for making polyetherimides using carboxylic acid...

Details Method for making polyetherimides using carboxylic acid... Method for making polyetherimides using carboxylic acid...

C - Chemistry, Metallurgy

08

G

402/221, 402/9

C08G 73/10 (2006.01) C08G 77/26 (2006.01)

Patent

CA 1168399

RD-12549 METHOD FOR MAKING POLYETHERIMIDES USING CARBOXYLIC ACID SALTS OF ALKALI METALS OR ZINC AS CATALYSTS Abstract of the Disclosure A method is provided for enhancing the rate of form- ation of polyetherimides under melt or solution polymerization conditions by using either an alkali metal carboxylic acid salt, or a zinc carboxylic acid salt as a catalyst. The aforemen- tioned catalysts are employed in a polymerization mixture of aromatic bis(ether anhydride) and an organic diamine.

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