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

Personal Author(s):

• Sicree,Albert J.
• Arnold,Fred E.

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.

Descriptors:

• *Synthesis(Chemistry)
• *Thermal stability
• *Patents
• Quinolines
• Condensation reactions
• Heat resistant plastics
• Protective coatings
• Polymeric films
• Space systems

Subject Categories:

• Polymer Chemistry
• Coatings, Colorants and Finishes
• Plastics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE