Accession Number:

ADA067199

Title:

Synthesis of a Thiophene-Containing Bisbenzil and a Derived Polyquinoxaline

Descriptive Note:

Final rept.

Corporate Author:

ARMY MATERIALS AND MECHANICS RESEARCH CENTER WATERTOWN MA

Personal Author(s):

• Macaione, Domenic P.
• Wentworth, Stanley E.

Report Date:

1979-02-01

Pagination or Media Count:

16.0

Abstract:

The development of polyphenylquinoxaline PPQ polymers as high- temperature-resistant materials has been hindered, in part, by the high cost of one resin component, 1,4-bis phenylglyoxaloyl benzene PGB. A low-cost synthesis of PGB or PGB-type compounds to be substituted for PGB in the synthesis of PPQ-type polymers is therefore desirable. This report deals with the synthesis of 1,4-bis 2-thienylglyoxaloyl-benzene THGB by the benzoin condensation route in the search for a low-cost replacement for PGB, and its reaction with 3,3 -diaminobenzidine DAB to prepare poly2-thienylquinoxaline PTHQ. Some of the properties of the polymer have been determined and are discussed.

Descriptors:

• *POLYMERS
• *QUINOXALINES
• *SYNTHESIS(CHEMISTRY)
• BENZYL RADICALS
• CHEMICAL DERIVATIVES
• CONDENSATION REACTIONS
• CROSSLINKING(CHEMISTRY)
• HIGH TEMPERATURE
• MOLECULAR STRUCTURE
• THIOPHENES

Subject Categories:

• Polymer Chemistry
• Plastics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE