US4723018A
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2-phenylpyridine derivatives
Assignee: Seiko Epson Corp
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Filing: 1987-01-21
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Granted: 1988-02-02
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Expires: 2007-01-21
Abstract
Abstract 2-phenylpyridine derivatives having the general formula: ##STR1## wherein Y is ##STR2## and Z is a straight chain alkyl group having from 1 to 16 carbon atoms, ##STR3## R' is a straight chain alkyl group having from 2 to 12 carbon atoms, R 2 is a straight chain alkyl group having from 1 to 12 carbon atoms, n is an integer from 1 to 10 and * is an asymmetric carbon are provided. The derivatives are stable, have low viscosity, excellent electro-optical response properties and broaden the ferroelectric temperature range when added to ferroelectric liquid crystal compositions.
Inventors
- 👤 Yoshio Shionozaki
- 👤 Hiroshi Mukai
- 👤 Tsuyoshi Obikawa
- 👤 Shuhei Yamada
- 👤 Rei Miyazaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:21
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/24; C07D213/28; C07D213/30; C07D213/54; C07D213/55; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/34; C09K19/3441; C09K19/3444
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
71 words
2-phenylpyridine derivatives represented by the general formula: ##STR27## wherein Y is ##STR28## and Z is a straight chain alkyl group having from 1 to 16 carbon atoms, ##STR29## R' is a straight chain alkyl group having from 2 to 12 carbon atoms, R 2 is a straight chain alkyl group having from 1 to 12 carbon atoms, n is an integer from 1 to 10 and * is an asymmetric carbon.
Claim 2
Dependent Claim
71 words
2-phenylpyridine derivatives represented by the general formula: ##STR27## wherein Y is ##STR28## and Z is a straight chain alkyl group having from 1 to 16 carbon atoms, ##STR29## R' is a straight chain alkyl group having from 2 to 12 carbon atoms, R 2 is a straight chain alkyl group having from 1 to 12 carbon atoms, n is an integer from 1 to 10 and * is an asymmetric carbon.
Claim 3
Dependent Claim
10 words
The 2-phenylpyridine derivative of claim 1, wherein Y is ##STR30##
Claim 4
Dependent Claim
44 words
The 2-phenylpyridine derivative of claim 2, wherein R' is a straight chain alkyl group having from 2 to 8 carbon atoms, Z is a straight chain alkyl group having from 6 to 12 carbon atoms and n is an integer from 1 to 5.
Claim 5
Dependent Claim
10 words
The 2-phenylpyridine derivative of claim 2, wherein Z is ##STR31##
Claim 6
Dependent Claim
10 words
The 2-phenylpyridine derivative of claim 2, wherein Z is ##STR32##
Claim 7
Dependent Claim
10 words
The 2-phenylpyridine derivative of claim 1, wherein Y is ##STR33##
Claim 8
Dependent Claim
45 words
The 2-phenylpyridine derivative of claim 6, wherein R 1 is a straight chain alkyl group having from 6 to 12 carbon atoms, Z is a straight chain alkyl group having from 6 to 12 carbon atoms and n is an integer from 1 to 5.
Claim 9
Dependent Claim
10 words
The 2-phenylpyridine derivative of claim 1, wherein Y is ##STR34##
Claim 10
Dependent Claim
45 words
The 2-phenylpyridine derivative of claim 8, wherein R 1 is a straight chain alkyl group having from 2 to 8 carbon atoms, Z is a stragith chain alkyl group having from 6 to 12 carbon atoms and n is an integer from 1 to 5.
References Cited (Backward Citations)
US4579850A
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) | 1991-02-01 | 1991-08-03 | 1992-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-02-01 | 1995-08-03 | 1996-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-02-01 | 1999-08-03 | 2000-02-02 | $7700.00 | Window Closed / Lapsed |