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Patent US4868250A successfully refreshed from Google Patents.
US4868250A
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Polysiloxane polymers exhibiting nonlinear optical response
Assignee: CNA Holdings LLC
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Filing: 1986-01-24
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Granted: 1989-09-19
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Expires: 2006-01-24
Abstract
Abstract This invention provides novel polysiloxane polymers which exhibit nonlinear optical response, and which have utility as a transparent optical component in electrooptic light modulator devices. An invention side chain liquid crystalline polysiloxane polymer is illustrated by the structure: ##STR1##
Inventors
- 👤 Ronald N. DeMartino
- 👤 Hyun-Nam Yoon
- 👤 James B. Stamatoff
- 👤 Alan Buckley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:43
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/38; C08G77/382; C09; C09K; C09K19/00; C09K19/04; C09K19/40; C09K19/406; C09K19/408; G; G02; G02F; G02F1/00; G02F1/35; G02F1/355; G02F1/361; G02F1/3615; G02F1/3617
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
64 words
A polymer which is characterized by a recurring monomeric unit corresponding to the formula: ##STR24## where R 2 is a C 1 -C 10 hydrocarbyl group; m 1 is an integer of at least 5; n is an integer between about 4-20; X 1 is --NR 1 --, --O-- or --S--; R 1 is hydrogen or methyl; and Z 1 is --NO 2 .
Claim 2
Dependent Claim
64 words
A polymer which is characterized by a recurring monomeric unit corresponding to the formula: ##STR24## where R 2 is a C 1 -C 10 hydrocarbyl group; m 1 is an integer of at least 5; n is an integer between about 4-20; X 1 is --NR 1 --, --O-- or --S--; R 1 is hydrogen or methyl; and Z 1 is --NO 2 .
Claim 3
Dependent Claim
18 words
A polymer in accordance with claim 1 wherein R 2 is a C 1 -C 4 alkyl group.
Claim 4
Dependent Claim
14 words
A polymer in accordance with claim 1 wherein R 2 is a methyl group.
Claim 5
Dependent Claim
15 words
A polymer in accordance with claim 1 wherein the polymer exhibits a liquid crystalline phase.
Claim 6
Dependent Claim
51 words
A thermotropic liquid crystalline polymer which is characterized by a recurring monomeric unit corresponding to the formula: ##STR25## where m 1 is an integer of at least 5; n is an integer between about 4-20; X 1 is --NR 1 --, --O-- or --S--; and R 1 is hydrogen or methyl.
Claim 7
Dependent Claim
51 words
A thermotropic liquid crystalline polymer which is characterized by a recurring monomeric unit corresponding to the formula: ##STR25## where m 1 is an integer of at least 5; n is an integer between about 4-20; X 1 is --NR 1 --, --O-- or --S--; and R 1 is hydrogen or methyl.
Claim 8
Dependent Claim
14 words
A liquid crystalline polymer in accordance with claim 5 wherein X 2 is --NH--.
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) | 1992-09-18 | 1993-03-20 | 1993-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-18 | 1997-03-20 | 1997-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-18 | 2001-03-20 | 2001-09-19 | $7700.00 | Window Closed / Lapsed |