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US4603187A
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Polyacetylenic compositions
Assignee: Celanese Corp
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Filing: 1985-03-11
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Granted: 1986-07-29
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Expires: 2005-03-11
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
2026-11-05 05:59
CPC Classifications
C; C08; C08F; C08F38/00; C09; C09K; C09K19/00; C09K19/04; C09K19/38; C09K19/3804; G; G02; G02F; G02F1/00; G02F1/35; G02F1/355; G02F1/361; G02F1/3615; G02F1/3617
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
32 words
A polymeric composition which is characterized by the recurring monomeric unit: ##STR7## where X is an electron-donating substituent; Y is an electron-withdrawing substituent; and n is an integer of at least 3.
Claim 2
Dependent Claim
32 words
A polymeric composition which is characterized by the recurring monomeric unit: ##STR7## where X is an electron-donating substituent; Y is an electron-withdrawing substituent; and n is an integer of at least 3.
Claim 3
Dependent Claim
73 words
A thermoplastic polyacetylenic composition having anisotropic properties which is characterized by the recurring monomeric unit: ##STR8## 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 4
Dependent Claim
73 words
A thermoplastic polyacetylenic composition having anisotropic properties which is characterized by the recurring monomeric unit: ##STR8## 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 5
Dependent Claim
46 words
A liquid crystalline polyacetylenic composition having nonlinear optical properties which is characterized by the recurring monomeric unit: ##STR9## wherein said polymer has a weight average molecular weight in the range between about 2000-100,000, and exhibits a THG χ.sup.(3) susceptibility value greater than about 10×10 -12 esu.
Claim 6
Dependent Claim
46 words
A liquid crystalline polyacetylenic composition having nonlinear optical properties which is characterized by the recurring monomeric unit: ##STR9## wherein said polymer has a weight average molecular weight in the range between about 2000-100,000, and exhibits a THG χ.sup.(3) susceptibility value greater than about 10×10 -12 esu.
Claim 7
Dependent Claim
1 words
1-(4-dimethylaminophenyl)-2-bromo-2-(4-nitrophenyl)ethylene.
Claim 8
Dependent Claim
1 words
1-(4-dimethylaminophenyl)-2-bromo-2-(4-nitrophenyl)ethylene.
Claim 9
Dependent Claim
31 words
A process for production of a polyacetylenic composition which comprises polymerizing an acetylene monomer corresponding to the formula: ##STR10## where X is an electron-donating substituent, and Y is an electron-withdrawing substituent.
Claim 10
Dependent Claim
31 words
A process for production of a polyacetylenic composition which comprises polymerizing an acetylene monomer corresponding to the formula: ##STR10## where X is an electron-donating substituent, and Y is an electron-withdrawing substituent.
Claim 11
Dependent Claim
13 words
A process in accordance with claim 5 wherein the X substituent is dimethylamino.
Claim 12
Dependent Claim
13 words
A process in accordance with claim 5 wherein the Y substituent is nitro.
Claim 13
Dependent Claim
13 words
A process in accordance with claim 5 wherein the Y substituent is cyano.
Claim 14
Dependent Claim
13 words
A process in accordance with claim 5 wherein the Y substitutent is trifluoromethyl.
References Cited (Backward Citations)
US4283557A
Cited
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1989-07-28 | 1990-01-27 | 1990-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-28 | 1994-01-27 | 1994-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-28 | 1998-01-27 | 1998-07-29 | $7700.00 | Window Closed / Lapsed |