Organic amine catalyzed method for making polyetherimide

Details Organic amine catalyzed method for making polyetherimide Organic amine catalyzed method for making polyetherimide

1980-09-25

1982-04-13

Welsh, Maurice J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

C08G 7310

Patent

active

043248845

ABSTRACT:
A method is provided for making polyetherimides, based on the use of certain organic diamine catalysts, for example, 4-dimethylaminopyridine and secondary or tertiary aliphatic diamines, to accelerate the intercondensation of aromatic bis(ether anhydride) and organic diamine under solution or melt polymerization conditions. The resulting polyetherimides are high performance injection moldable thermoplastics.

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The Preparation of Phthalamic Acids and their Conversion into Anthranilic Acids, Chapman et al., J. Chem. Soc. 127, 1791 (1925).

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