Accession Number : ADD000431
Title : Benzothiophenedioxideisoquinoline Polymers.
Descriptive Note : Patent,
Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON D C
Personal Author(s) : Sicree,Albert J ; Arnold,Fred E
Report Date : 11 Feb 1975
Pagination or Media Count : 7
Abstract : The patent describes the synthesis of benzothiophenedioxideisoquinoline ladder polymers by the condensation of 2,3,7,8-tetraaminodibenzothiophene-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 : *Patents, *Heat resistant plastics, *Thiophenes, Polycyclic compounds, Polymerization, Synthesis(Chemistry), Nitrogen heterocyclic compounds, Aromatic compounds
Subject Categories : Polymer Chemistry
Distribution Statement : APPROVED FOR PUBLIC RELEASE