Claims
- 1. A composition consisting essentially of (1) an acetylene-terminated quinoxaline oligomer having the following structure formula: ##STR8## wherein X is a single bond, --O--, --S--, ##STR9## --CH.sub.2 --, ##STR10## Z is ##STR11## Ar is ##STR12## and n is an integer ranging from 1 to 20, inclusive; and (2) about 1 to 40 weight percent, based on the total weight of the composition, of an acetylene-substituted compound selected from the group of compounds having the following structural formulas: ##STR13##
- 2. The composition according to claim 1 that consists essentially of the oligomer and about 5 to 30 weight percent of the acetylene-substituted compound, based upon the total weight of the composition.
- 3. The composition according to claim 1 or 2 in which X is a single bond, Z is ##STR14## and Ar is ##STR15## and the acetylene-substituted compound is compound (a).
- 4. The composition according to claim 1 or 2 in which X is a single bond, Z is ##STR16## and Ar is ##STR17## and the acetylene-substituted compound is compound (b).
- 5. The composition according to claim 1 and 2 in which X is a single bond, Z is ##STR18## and Ar is ##STR19## and the acetylene-substituted compound is compound (a).
- 6. The composition according to claim 1 or 2 in which X is a single bond, Z is ##STR20## and Ar is ##STR21## and the acetylene-substituted compound is compound (b).
- 7. The composition according to claim 1 or 2 in which X is --O--, Z is ##STR22## and Ar is ##STR23## and the acetylene-substituted compound is compound (a).
- 8. The composition according to claim 1 or 2 in which X is --O--, Z is ##STR24## and Ar is ##STR25## and the acetylene-substituted compound is compound (b).
RIGHTS OF THE GOVERNMENT
The invention described herein may be manufactured and used by or for the Government of the United States for all governmental purposes without the payment of any royalty.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
3905941 |
Jones |
Sep 1975 |
|
4147868 |
Arnold et al. |
Apr 1979 |
|