Accession Number:

ADA038839

Title:

Evaluation of Polyphenylquinoxalines Derived from an Inexpensive Tetraketone Monomer.

Descriptive Note:

Final rept.,

Corporate Author:

ARMY MATERIALS AND MECHANICS RESEARCH CENTER WATERTOWN MASS

Report Date:

1977-03-01

Pagination or Media Count:

10.0

Abstract:

Polyphenylquinoxalines PPQs, which are superior high-temperature-resistant resins, have long been considered too costly for most aerospace applications. This is principally due to the high cost of the tetraketone monomers from which they are prepared. A recently developed alternate synthesis of these tetraketones promises to dramatically lower their cost. A PPQ has been prepared from one of these low-cost tetraketones and a series of comparisons made with the analogous PPQ derived from the conventionally prepared tetraketone. It is concluded that the PPQ derived from the tetraketone prepared via this new route is essentially equivalent to the PPQ obtained from the original monomer. Thus, the new synthesis has not introduced any impurities peculiar to it which have a deleterious effect on the resultant polymer. Author

Subject Categories:

  • Polymer Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE