Process for making polyetherimides

Details Process for making polyetherimides Process for making polyetherimides

1984-12-21

1987-08-25

Phynes, Lucille M.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528 26, 528 28, 528125, 528126, 528173, 528183, 528185, 528188, 528351, 528352, 528353, C08G 7310

Patent

active

046893911

ABSTRACT:
A process for making polyetherimides involving reacting an aromatic bis(ether anhydride) with an organic diamine in the presence of a solvent so as to form a polyamide acid. The polyamide acid is thereafter polymerized in a solid state at a temperature below the glass transition temperature of the final polyetherimide.

REFERENCES:
patent: 3847867 (1974-11-01), Heath et al.
patent: 4421907 (1983-12-01), Schmidt et al.
patent: 4443592 (1984-04-01), Schmidt et al.

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