Polyimide polymers having 12-F fluorine-containing linking group

Details Polyimide polymers having 12-F fluorine-containing linking group Polyimide polymers having 12-F fluorine-containing linking group

1989-05-08

1990-11-27

Foelak, Morton

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528176, 528188, 528229, 528353, C08G 1200

Patent

active

049736515

ABSTRACT:
The present invention provides novel heat stable polyimide and polyamic acid precursor polymers having excellent flow properties which render them more readily processible into fibers, films, sheets and other molded articles. The polymers are prepared by forming the polycondensation product of one or more aromatic diamines and one or more aromatic dianhydride monomers, at least one of said diamine monomers having the structure: ##STR1## wherein R is CF.sub.3 or phenyl. The polyimides of this invention exhibit improved solubility and low temperature flow characteristics, low moisture uptake, high thermal stability, low dielectric constant and good hydrolytic stability.

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