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Accession Number:
ADD002172
Title:
2,3,7,8-Tetraaminodibenzothiophene 5,5-Dioxide and Process Therefor.
Descriptive Note:
Patent,
Corporate Author:
DEPARTMENT OF THE AIR FORCE WASHINGTON D C
Report Date:
1975-12-30
Pagination or Media Count:
6.0
Abstract:
Benzothiophenedioxideisoquinoline ladder polymers are synthesized by the condensation of 2,3,7,8-tetraaminodibenzothiophenes-5,5-dioxide with an aromatic tetracarboxylic acid or dianhydride thereof. The highly fused, aromatic-heterocyclic polymers so prepared have a high degree of thermal stability, a property that renders them particularly useful for high temperature applications, such as for plastic composites, fibrous materials and protective coatings.
Distribution Statement:
APPROVED FOR PUBLIC RELEASE