US4268654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acetylene terminated matrix and adhesive oligomeric compositions
Assignee: United States Department of the Air Force
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Filing: 1979-10-26
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Granted: 1981-05-19
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Expires: 1999-10-26
Abstract
Abstract A composition prepared by mixing a high Tg, acetylene-terminated phenylquinoxaline oligomer with an acetylene-substituted reactive diluent. The presence of the reactive diluent in the mixture effectively lowers the Tg of the oligomer so as to provide the composition with adequate flow for melt processing.
Inventors
- 👤 Fred E. Arnold
- 👤 Bruce A. Reinhardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:43
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/06; C08G73/0683; C08G73/0694
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
78 words
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 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##
Claim 2
Dependent Claim
78 words
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 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##
Claim 3
Dependent Claim
31 words
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.
Claim 4
Dependent Claim
29 words
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).
Claim 5
Dependent Claim
29 words
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).
Claim 6
Dependent Claim
29 words
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).
Claim 7
Dependent Claim
29 words
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).
Claim 8
Dependent Claim
27 words
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).
Claim 9
Dependent Claim
27 words
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).
References Cited (Backward Citations)
US3905941A
Cited
US4147868A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-05-18 | 1984-11-17 | 1985-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-18 | 1988-11-17 | 1989-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-18 | 1992-11-17 | 1993-05-19 | $7700.00 | Window Closed / Lapsed |