Process for the manufacture of polyimide products

Details Process for the manufacture of polyimide products Process for the manufacture of polyimide products

1973-01-26

1976-03-30

Jacobs, Lewis T.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 326NT, 260 78TF, C08G 7310

Patent

active

039474020

ABSTRACT:
In a process for the manufacture of a polyimide from a polyamide carboxylic acid solution by cyclodehydration of the polyamide carboxylic acid, the improvement which comprises carrying out said cyclodehydration in the presence of a nitrogen containing compound selected from the group consisting of quinoline, isoquinoline, mono-substituted alkyl pyridines, dialkyl substituted pyridines, mono-substituted alkyl quinolines, dialkyl substituted quinolines, monoaralkyl substituted quinolines, diaralkyl substituted quinolines, monoalkyl substituted isoquinolines, dialkyl substituted isoquinolines, monoaralkyl substituted isoquinolines, diaralkyl substituted isoquinolines and mixtures thereof.

REFERENCES:
patent: 3179634 (1965-04-01), Edwards
patent: 3673145 (1972-06-01), Minami
patent: 3705875 (1972-12-01), Browning
patent: 3732200 (1973-05-01), Bach

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