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Patent US4631143A successfully refreshed from Google Patents.
US4631143A
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Triphenylene derivatives
Assignee: Merck Patent GmbH
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Filing: 1984-12-21
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Granted: 1986-12-23
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Expires: 2004-12-21
Abstract
Abstract Triphenylene derivatives of the formula I ##STR1## wherein X 1 to X 6 are each, independently of one another, --SH, --SR, --SOR, --SO 2 R or --S--COR, and each R is an alkyl group with up to 20 C atoms, it being possible for one or two CH 2 groups to be replaced by O atoms and/or by unsubstituted or substituted vinylene or vinylidene groups, may be used as components of discotic liquid-crystalline phases.
Inventors
- 👤 Klaus Praefcke
- 👤 Bernd Kohne
- 👤 Wadi Poules
- 👤 Eike Poetsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:12
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/32; C09K2019/328
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
104 words
A triphenylene of the formula ##STR3## wherein X 1 to X 6 are each --SH, --SR, --SOR, --SO 2 R or --S--COR, and each R is alkyl of up to 20 C atoms, or such an alkyl group wherein one or two CH 2 groups not bound to S are replaced by O atoms and/or vinylene or vinylidene groups or vinylene or vinylidene groups substituted by F, Cl or CN, the total number of C atoms being up to 20 in all cases, and O atoms being non-adjacent the X-substitution being hexakis and saturated, or pentakis and saturated with the sixth X being unsaturated.
Claim 2
Dependent Claim
104 words
A triphenylene of the formula ##STR3## wherein X 1 to X 6 are each --SH, --SR, --SOR, --SO 2 R or --S--COR, and each R is alkyl of up to 20 C atoms, or such an alkyl group wherein one or two CH 2 groups not bound to S are replaced by O atoms and/or vinylene or vinylidene groups or vinylene or vinylidene groups substituted by F, Cl or CN, the total number of C atoms being up to 20 in all cases, and O atoms being non-adjacent the X-substitution being hexakis and saturated, or pentakis and saturated with the sixth X being unsaturated.
Claim 3
Dependent Claim
12 words
A compound of claim 1 wherein X 1 -X 6 are identical.
Claim 4
Dependent Claim
27 words
A compound of claim 1 wherein X 1 -X 6 contains alkyl of 3-20 C atoms having one or two O atoms or vinylene or vinylidene groups.
Claim 5
Dependent Claim
21 words
A compound of claim 3 wherein X 1 -X 6 contain a group which is ω-hydroxy-alkyl, (ω-1)-alkenyl, (ω-2)-alkenyl, (ω-3)-alkenyl or (ω-1)-methyl-(ω-1)-alkenyl.
Claim 6
Dependent Claim
9 words
A compound of claim 1 wherein R is linear.
Claim 7
Dependent Claim
16 words
A compound of claim 1 wherein at least one of X 1 -X 6 is --SH.
Claim 8
Dependent Claim
16 words
A compound of claim 1 wherein at least one of X 1 -X 6 is --SR.
Claim 9
Dependent Claim
16 words
A compound of claim 1 wherein at least one of X 1 -X 6 is --SOR.
Claim 10
Dependent Claim
18 words
A compound of claim 1 wherein at least one of X 1 -X 6 is --SO 2 R.
Claim 11
Dependent Claim
16 words
A compound of claim 1 wherein at least one of X 1 -X 6 is --S--COR.
Claim 12
Dependent Claim
10 words
A compound of claim 2 wherein the X's are --SH.
Claim 13
Dependent Claim
10 words
A compound of claim 2 wherein the X's are --SR.
Claim 14
Dependent Claim
10 words
A compound of claim 2 wherein the X's are --SOR.
Claim 15
Dependent Claim
12 words
A compound of claim 2 wherein the X's are --SO 2 R.
Claim 16
Dependent Claim
10 words
A compound of claim 2 wherein the X's are --S--COR.
Claim 17
Dependent Claim
22 words
A discotic liquid-crystalline phase comprising at least two liquid-crystalline components, wherein at least one component is a triphenylene derivative of claim 1.
Claim 18
Dependent Claim
22 words
A discotic liquid-crystalline phase comprising at least two liquid-crystalline components, wherein at least one component is a triphenylene derivative of claim 2.
Claim 19
Dependent Claim
20 words
In a liquid crystal display element comprising a liquid-crystalline phase, the improvement wherein the phase is one of claim 16.
Claim 20
Dependent Claim
20 words
In a liquid crystal display element comprising a liquid-crystalline phase, the improvement wherein the phase is one of claim 17.
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) | 1989-12-22 | 1990-06-23 | 1990-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-12-22 | 1994-06-23 | 1994-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-12-22 | 1998-06-23 | 1998-12-23 | $7700.00 | Window Closed / Lapsed |