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US4605869A
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Polyacetylenic compositions
Assignee: Celanese Corp
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Filing: 1985-10-24
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Granted: 1986-08-12
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Expires: 2005-10-24
Abstract
Abstract This invention provides a novel class of polyacetylenic compositions. Illustrative of the invention is a liquid crystalline polymer characterized by the repeating unit: ##STR1## In the form of an optically transparent substrate, the polymer exhibits exceptional nonlinear third-order susceptibility effects.
Inventors
- 👤 Eui W. Choe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:30
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/35; G02F1/355; G02F1/361; G02F1/3615; G02F1/3617; C; C08; C08F; C08F38/00; C09; C09K; C09K19/00; C09K19/04; C09K19/38; C09K19/3804
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A laser frequency converter device with a polymeric nonlinear optical component comprising an optically transparent medium of a polymer characterized by the recurring monomeric unit: ##STR7## where R and R 1 are alkyl groups containing between about 1-4 carbon atoms, and R and R 1 taken together with the connecting nitrogen atom form an alicyclic substituent; Y' is a substituent selected from nitro, cyano and trifluoromethyl radicals; and the weight average molecular weight of the polymer is in the range between about 1000-500,000.
Claim 2
Dependent Claim
83 words
A laser frequency converter device with a polymeric nonlinear optical component comprising an optically transparent medium of a polymer characterized by the recurring monomeric unit: ##STR7## where R and R 1 are alkyl groups containing between about 1-4 carbon atoms, and R and R 1 taken together with the connecting nitrogen atom form an alicyclic substituent; Y' is a substituent selected from nitro, cyano and trifluoromethyl radicals; and the weight average molecular weight of the polymer is in the range between about 1000-500,000.
References Cited (Backward Citations)
US4431263A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-08-11 | 1990-02-10 | 1990-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-11 | 1994-02-10 | 1994-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-11 | 1998-02-10 | 1998-08-12 | $7700.00 | Window Closed / Lapsed |