Co-solvent accelerator for conversion of polyamide-acid solution

Details Co-solvent accelerator for conversion of polyamide-acid solution Co-solvent accelerator for conversion of polyamide-acid solution

1985-07-31

1987-01-27

Phynes, Lucille M.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524600, 524104, C08J 302, C08K 504

Patent

active

046394850

ABSTRACT:
A co-solvent accelerator for a polyamide-acid/ether solution which accelerates the conversion thereof to polyimide is presented. The co-solvent accelerator comprises high boiling pyrrolidone-based solvents, especially those with a boiling point of above about 250.degree. C. such as N-cyclohexyl-2-pyrrolidone (CHP). Said co-solvents are employed in concentrations of from about 0.5% to about 10% by weight, preferably 3% to about 10%.

REFERENCES:
patent: 4115341 (1978-09-01), Boldebuck et al.

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