US4720567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel diacetylenic and polydiacetylenic compositions
Assignee: CNA Holdings LLC
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Filing: 1986-12-17
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Granted: 1988-01-19
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Expires: 2006-12-17
Abstract
Abstract This invention provides a novel class of diacetylenic monomers and corresponding polydiacetylenic polymers. Illustrative of the invention is a polymer characterized by the repeating unit: ##STR1## In the form of an optically transparent medium with a noncentrosymmetric alignment of molecules, the polymer exhibits exceptional second order nonlinear optical susceptibility effects.
Inventors
- 👤 Eui W. Choe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:43
CPC Classifications
C; C07; C07C; C07C255/00; C08; C08F; C08F38/00; G; G02; G02F; G02F1/00; G02F1/35; G02F1/355; G02F1/361; G02F1/3615; G02F1/3617; G03; G03C; G03C1/00; G03C1/72; G03C1/73; G03C1/733
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
50 words
A diacetylene compound corresponding to the formula: ##STR18## where R and R 1 are alkyl groups containing between about 1-20 carbon atoms, and R and R 1 taken together with the connecting nitrogen atom form an alicyclic substituent; and Y' is a substituent selected from nitro, cyano and trifluoromethyl radicals.
Claim 2
Dependent Claim
50 words
A diacetylene compound corresponding to the formula: ##STR18## where R and R 1 are alkyl groups containing between about 1-20 carbon atoms, and R and R 1 taken together with the connecting nitrogen atom form an alicyclic substituent; and Y' is a substituent selected from nitro, cyano and trifluoromethyl radicals.
Claim 3
Dependent Claim
1 words
1-(4-Dimethylaminophenyl)-4-(4-nitrophenyl)-1,3-butadiyne.
Claim 4
Dependent Claim
1 words
1-(4-Dimethylaminophenyl)-4-(4-nitrophenyl)-1,3-butadiyne.
Claim 5
Dependent Claim
1 words
1-(4-Dimethylaminophenyl)-4-(4-cyanophenyl)-1,3-butadiyne.
Claim 6
Dependent Claim
1 words
1-(4-Dimethylaminophenyl)-4-(4-cyanophenyl)-1,3-butadiyne.
Claim 7
Dependent Claim
1 words
1-(4-Dimethylaminophenyl)-4-(4-trifluoromethyl-phenyl)-1,3-butadiyne.
Claim 8
Dependent Claim
1 words
1-(4-Dimethylaminophenyl)-4-(4-trifluoromethyl-phenyl)-1,3-butadiyne.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-01-18 | 1991-07-20 | 1992-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-18 | 1995-07-20 | 1996-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-18 | 1999-07-20 | 2000-01-19 | $7700.00 | Window Closed / Lapsed |