US4436886A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2-Phenylbanzothiazole polymers
Assignee: United States Department of the Air Force
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Filing: 1983-02-02
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Granted: 1984-03-13
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Expires: 2003-02-02
Abstract
Abstract Mono- and di-acetylenic-substituted 2-phenylbenzothiazoles are thermally self-polymerized to form thermally stable polymers. The polymers are useful as laminating resins for fibrous composites, particularly for high temperature applications.
Inventors
- 👤 Tsu-tzu Tsai
- 👤 Fred E. Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:41
CPC Classifications
C; C08; C08F; C08F38/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/31931
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
45 words
A 2-phenylbenzothiazole resin formed by the thermal, self-polymerization of a 2-phenylbenzothiazole monomer having at least one terminal acetylene group of the formula ##STR7## wherein R a and R b are --H or --C.tbd.CH, wherein at least one of R a or R b is --C.tbd.CH.
Claim 2
Dependent Claim
45 words
A 2-phenylbenzothiazole resin formed by the thermal, self-polymerization of a 2-phenylbenzothiazole monomer having at least one terminal acetylene group of the formula ##STR7## wherein R a and R b are --H or --C.tbd.CH, wherein at least one of R a or R b is --C.tbd.CH.
Claim 3
Dependent Claim
12 words
A polymer in accordance with claim 1 wherein said monomer is 2-(3-ethynylphenyl)benzothiazole.
Claim 4
Dependent Claim
12 words
A polymer in accordance with claim 1 wherein said monomer is 2-(4-ethynylphenyl)benzothiazole.
Claim 5
Dependent Claim
12 words
A polymer in accordance with claim 1 wherein said monomer is 2-phenyl-5-ethynylbenzothiazole.
Claim 6
Dependent Claim
12 words
A polymer in accordance with claim 1 wherein said monomer is 2-phenyl-6-ethynylbenzothiazole.
Claim 7
Dependent Claim
12 words
A polymer in accordance with claim 1 wherein said monomer is 2-(4-ethynylphenyl)-5-ethynylbenzothiazole.
Claim 8
Dependent Claim
12 words
A polymer in accordance with claim 1 wherein said monomer is 2-(3-ethynylphenyl)-5-ethynylbenzothiazole.
Claim 9
Dependent Claim
12 words
A polymer in accordance with claim 1 wherein said monomer is 2-(4-ethynylphenyl)-6-ethynylbenzothiazole.
Claim 10
Dependent Claim
12 words
A polymer in accordance with claim 1 wherein said monomer is 2-(3-ethynylphenyl)-6-ethynylbenzothiazole.
Claim 11
Dependent Claim
60 words
A 2-phenylbenzothiazole resin formed by the thermal, self-polymerization of a mixture of a mono-acetylenic monomer of the formula ##STR8## wherein R a is --H or --C.tbd.CH, R b is --C.tbd.CH or --H and only one of R a or R b is --C.tbd.CH, and a di-acetylenic compound of the same formula wherein both R a and R b are --C.tbd.CH.
Claim 12
Dependent Claim
60 words
A 2-phenylbenzothiazole resin formed by the thermal, self-polymerization of a mixture of a mono-acetylenic monomer of the formula ##STR8## wherein R a is --H or --C.tbd.CH, R b is --C.tbd.CH or --H and only one of R a or R b is --C.tbd.CH, and a di-acetylenic compound of the same formula wherein both R a and R b are --C.tbd.CH.
References Cited (Backward Citations)
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Cited
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US3816443A
Cited
US4147868A
Cited
US4147858A
Cited
US4263461A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-03-13 | 1987-09-12 | 1988-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-13 | 1991-09-12 | 1992-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-13 | 1995-09-12 | 1996-03-13 | $7700.00 | Window Closed / Lapsed |