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US4283557A
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Acetylene-terminated dianil monomer and the polymer therefrom
Assignee: United States Department of the Navy
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Filing: 1979-12-10
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Granted: 1981-08-11
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Expires: 1999-12-10
Abstract
Abstract A compound with the formula: <IMAGE> wherein R is selected from the class consisting of H-, F-, Cl-, CH3-nFn, and CH3-nCln and n is an integer from 1 to 3 and the polymer resulting therefrom by heating at a temperature from about the melting point to about 300 DEG C. The polymer is suitable as a high-temperature structural material and a semiconductor material.
Inventors
- 👤 Theodore R. Walton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:09
CPC Classifications
C; C08; C08F; C08F38/00; H; H01; H01B; H01B1/00; H01B1/06; H01B1/12; H01B1/124; H01B1/128
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
38 words
A compound with the formula ##STR4## wherein R is selected from the class consisting of H--, F--, Cl--, CH 3-n F n , and CH 3-n Cl n -- and n is an integer from 1 to 3.
Claim 2
Dependent Claim
38 words
A compound with the formula ##STR4## wherein R is selected from the class consisting of H--, F--, Cl--, CH 3-n F n , and CH 3-n Cl n -- and n is an integer from 1 to 3.
Claim 3
Dependent Claim
13 words
The compound of claim 1 wherein R is F-- or CF 3 --.
Claim 4
Dependent Claim
13 words
The compound of claim 1 wherein R is CL-- or CCL 3 --.
Claim 5
Dependent Claim
9 words
The compound of claim 1 where R is H--.
Claim 6
Dependent Claim
15 words
The compound of claim 4 wherein the methine groups are attached para to each other.
Claim 7
Dependent Claim
16 words
The compounds of claim 4 wherein the acetylene groups are attached meta to the imine group.
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) | 1984-08-10 | 1985-02-09 | 1985-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-10 | 1989-02-09 | 1989-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-10 | 1993-02-09 | 1993-08-11 | $7700.00 | Window Closed / Lapsed |