Chain-extending anhydride end-capped polyimides

Details Chain-extending anhydride end-capped polyimides Chain-extending anhydride end-capped polyimides

1978-03-06

1980-04-08

Lee, Lester L.

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

Synthetic resins

From ketone or ketene reactant

528 20, 528 26, 528 27, 528 28, 528125, 528126, 528108, 528170, 528172, 528179, 528188, 528207, 528208, 528223, 528229, 528312, 528317, 528321, 528322, 528351, 528352, 528353, C08G 7310

Patent

active

041973976

ABSTRACT:
Aromatic polyimides with anhydride end groups are chain-extended (molecular weight increased) by reacting them with aromatic diamines or diamine terminated imide oligomers. The reaction can either be at a temperature above the melting point of the reactants or in solvents for the reactants. These polyimides can be shaped and formed prior to chain-extending.

REFERENCES:
patent: 3505295 (1970-04-01), Grundsteidl et al.
patent: 3511807 (1970-05-01), Lovejoy
patent: 3652500 (1972-03-01), Peterson
patent: 3663510 (1972-05-01), Peterson
patent: 3954710 (1976-05-01), Bower et al.

Affiliated with

Also associated with

Rating

Chain-extending anhydride end-capped polyimides does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Chain-extending anhydride end-capped polyimides, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chain-extending anhydride end-capped polyimides will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-974459