Copolyimides and a process for the preparation thereof

Details Copolyimides and a process for the preparation thereof Copolyimides and a process for the preparation thereof

1992-08-17

1994-10-18

Kight, III, John

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

Synthetic resins

From carboxylic acid or derivative thereof

528125, 528126, 528128, 528170, 528172, 528173, 528176, 528220, 528229, 528350, 528351, 560 36, 560 45, 560 48, C08G 7310, C08G 6926

Patent

active

053570324

ABSTRACT:
A diamine compound of the general formula ##STR1## wherein the arrows denote isomerism, R.sub.1 is a divalent aromatic group selected from the group consisting of ##STR2## R.sub.2 is a tetravalent aromatic group selected from the group consisting of ##STR3## and R.sub.4 is a monovalent aliphatic group selected from the group consisting of ethyl and isopropyl; and, a process for preparing same.

REFERENCES:
patent: 3179634 (1965-04-01), Edwards
patent: 3415782 (1968-12-01), Irwin et al.
patent: 4153783 (1979-05-01), Gagliani et al.
patent: 4244853 (1981-01-01), Serafini et al.
patent: 4251418 (1981-02-01), Chow et al.
patent: 4273886 (1981-06-01), Gagliani
patent: 4296208 (1981-10-01), Gagliani et al.
patent: 4299750 (1981-11-01), Antonoplos et al.
patent: 4305796 (1981-12-01), Gagliani et al.
patent: 4315077 (1982-02-01), Gagliani et al.
patent: 4319000 (1982-03-01), Gagliani et al.
patent: 4332656 (1982-06-01), Gagliani et al.
patent: 4332929 (1982-06-01), Holub et al.
patent: 4720539 (1988-01-01), Rabilloud et al.
patent: 4725642 (1988-02-01), Gannett et al.
patent: 5175241 (1992-12-01), Darrow
T. Kaneda et al., High-Strength-High Modulus Polyimide Fiber II. Journal of Applied Polymer Science, vol. 32, 3151-3176 (1986).

Affiliated with

Also associated with

Rating

Copolyimides and a process for the preparation thereof does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Copolyimides and a process for the preparation thereof, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Copolyimides and a process for the preparation thereof will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2373834