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Title: Polyimide resins

Abstract

A method for the preparation of a polyimide containing reversible crosslinks comprising the step of curing a monomer having the formula ##STR1## wherein R and R' may be the same or different and each is H or lower alkyl having 1-5 carbon atoms under conditions conducive to the formation of a polyimide and thereby forming a polyimide having the formula ##STR2## R and R' are as defined above and n is an integer from 10 to 100. The polyimide may be converted to a soluble polymer by cleaving the disulfide bond in the presence of a solvent and a reducing agent. The reduced polymer may be reformed into the polymer in an oxidation step or into a modified polyimide in other reaction steps. Copolymerization processes are also disclosed.

Inventors:
 [1];  [2]
  1. (Dobbs Ferry, NY)
  2. (Brooklyn, NY)
Issue Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN
OSTI Identifier:
869003
Patent Number(s):
5260411
Assignee:
Polytechnic University (Brooklyn, NY) ORNL
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
polyimide; resins; method; preparation; containing; reversible; crosslinks; comprising; step; curing; monomer; formula; str1; alkyl; 1-5; carbon; atoms; conditions; conducive; formation; forming; str2; defined; integer; 10; 100; converted; soluble; polymer; cleaving; disulfide; bond; presence; solvent; reducing; agent; reduced; reformed; oxidation; modified; reaction; steps; copolymerization; processes; disclosed; carbon atoms; reducing agent; polyimide resin; carbon atom; reaction step; soluble polymer; reaction steps; oxidation step; polymerization processes; soluble poly; polymerization process; polyimide containing; /528/525/

Citation Formats

Tesoro, Giuliana C., and Sastri, Vinod R. Polyimide resins. United States: N. p., 1993. Web.
Tesoro, Giuliana C., & Sastri, Vinod R. Polyimide resins. United States.
Tesoro, Giuliana C., and Sastri, Vinod R. Fri . "Polyimide resins". United States. https://www.osti.gov/servlets/purl/869003.
@article{osti_869003,
title = {Polyimide resins},
author = {Tesoro, Giuliana C. and Sastri, Vinod R.},
abstractNote = {A method for the preparation of a polyimide containing reversible crosslinks comprising the step of curing a monomer having the formula ##STR1## wherein R and R' may be the same or different and each is H or lower alkyl having 1-5 carbon atoms under conditions conducive to the formation of a polyimide and thereby forming a polyimide having the formula ##STR2## R and R' are as defined above and n is an integer from 10 to 100. The polyimide may be converted to a soluble polymer by cleaving the disulfide bond in the presence of a solvent and a reducing agent. The reduced polymer may be reformed into the polymer in an oxidation step or into a modified polyimide in other reaction steps. Copolymerization processes are also disclosed.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1993},
month = {1}
}

Patent:

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