Process for preparing a polyimide molded form

Details Process for preparing a polyimide molded form Process for preparing a polyimide molded form

1990-08-31

1992-05-12

Lorin, Hubert C.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Reshaping running or indefinite-length work

2642896, 2642902, 2642905, 264291, B29C 5500

Patent

active

051125579

ABSTRACT:
A process for the preparation of a polyimide molded form comprising the steps of swelling a primary-molded form consisting essentially of polyimide having recurring units of the formula (I) ##STR1## by using an aprotic polar solvent and subsequently stretching the swelled form.

REFERENCES:
patent: 3415782 (1968-12-01), Irwin et al.
patent: 4405550 (1983-09-01), Hungerford

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