US4513131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermally stable phenylacetylene terminated arylether resins
Assignee: United States Department of the Air Force
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Filing: 1984-07-25
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Granted: 1985-04-23
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Expires: 2004-07-25
Abstract
Abstract Thermally stable resins based on arylether compounds having terminal phenylethynyl groups are provided.
Inventors
- 👤 Bruce A. Reinhardt
- 👤 Fred E. Arnold
- 👤 Marilyn R. Unroe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:23
CPC Classifications
C; C07; C07C; C07C317/00; C07C43/00; C07C43/02; C07C43/257; C07C43/285; C07C49/00; C07C49/76; C07C49/84; C08; C08F; C08F38/00; C08G; C08G65/00; C08G65/34; C08G65/48; C08G65/485
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
52 words
A thermally stable resin of the general formula ##STR5## wherein Ar is a divalent aromatic moiety, n is an integer in the range of 1 to 3, and R is --H, --O--C 6 H 5 , --O--C 6 H 5 or --O--C 6 H 4 --SO 2 --C 2 H 5 .
Claim 2
Dependent Claim
52 words
A thermally stable resin of the general formula ##STR5## wherein Ar is a divalent aromatic moiety, n is an integer in the range of 1 to 3, and R is --H, --O--C 6 H 5 , --O--C 6 H 5 or --O--C 6 H 4 --SO 2 --C 2 H 5 .
Claim 3
Dependent Claim
35 words
The resin of claim 1 wherein Ar is selected from the group consisting of ##STR6## wherein Y is --SO 2 --, --C(CH 3 ) 2 --, --C(CF 3 ) 2 -- --S--, --O-- or --CO--.
Claim 4
Dependent Claim
13 words
The resin of claim 2 which is the cured product of 1,3-bis-m-(phenyl-ethynyl)phenoxy benzene.
Claim 5
Dependent Claim
13 words
The resin of claim 2 which is the cured product of 4,4'-bis-3-(phenyl-ethynyl)phenoxy diphenylsulfone.
Claim 6
Dependent Claim
12 words
The resin of claim 2 which is the cured product of 2,2-bis[([([3-phenoxy]-3-phenoxy)-3-phenylethynyl]-3-phenoxy)-4-phenyl]-propane.
Claim 7
Dependent Claim
12 words
The resin of claim 2 which is the cured product of 2,2-bis[([([3-phenoxy]-3-phenoxy)-3-phenylethynyl]-3-phenoxy)-4-phenyl]-hexafluoropropane.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-04-22 | 1988-10-22 | 1989-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-22 | 1992-10-22 | 1993-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-22 | 1996-10-22 | 1997-04-23 | $7700.00 | Window Closed / Lapsed |