US4597891A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid crystal compositions and devices and novel compounds
Assignee: Polaroid Corp
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Filing: 1984-06-04
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Granted: 1986-07-01
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Expires: 2004-06-04
Abstract
Abstract There are described novel perylene dyes which have at least one, and preferably two, substituted twisted biphenylene radicals. The substituted biphenylene radicals include substituents which confer a non-coplanar molecular configuration about the long axis of the dye molecule. The dyes are soluble in various liquid crystal materials and exhibit a high order parameter in solutions of liquid crystal material. Also disclosed are liquid crystal compositions and liquid crystal devices.
Inventors
- 👤 Howard G. Rogers
- 👤 Russell A. Gaudiana
- 👤 Cynthia B. McGowan
- 👤 Kenneth S. Norland
- 👤 Ronald J. Sahatjian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:21
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/52; C09K19/60; C09B; C09B5/00; C09B5/62
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
128 words
A liquid crystal composition comprising a liquid crystal material and at least one perylene dye represented by the formula ##STR8## wherein W is hydrogen or a substituent other than hydrogen; Z is a substituent other than hydrogen; R 5 is hydrogen, halogen, alkyl having from 1 to 10 carbon atoms, alkoxy having from 1 to 10 carbon atoms, phenyl, cyano, nitro, ##STR9## R 7 is hydrogen, alkyl having from 1 to 10 carbon atoms, phenyl or biphenyl; R 8 is alkyl having from 1 to 10 carbon atoms, phenyl or biphenyl; n is 1 or 2 and p is an integer of from 1 to 3; said W and Z substitution being sufficient to provide the biphenylene radicals to which they are attached with a non-coplanar molecular configuration.
Claim 2
Dependent Claim
128 words
A liquid crystal composition comprising a liquid crystal material and at least one perylene dye represented by the formula ##STR8## wherein W is hydrogen or a substituent other than hydrogen; Z is a substituent other than hydrogen; R 5 is hydrogen, halogen, alkyl having from 1 to 10 carbon atoms, alkoxy having from 1 to 10 carbon atoms, phenyl, cyano, nitro, ##STR9## R 7 is hydrogen, alkyl having from 1 to 10 carbon atoms, phenyl or biphenyl; R 8 is alkyl having from 1 to 10 carbon atoms, phenyl or biphenyl; n is 1 or 2 and p is an integer of from 1 to 3; said W and Z substitution being sufficient to provide the biphenylene radicals to which they are attached with a non-coplanar molecular configuration.
Claim 3
Dependent Claim
17 words
The composition as defined in claim 1 wherein said liquid crystal material is nematic liquid crystal material.
Claim 4
Dependent Claim
20 words
The composition as defined in claim 2 wherein Z is --CF 3 , W is hydrogen and p is 3.
Claim 5
Dependent Claim
17 words
The composition as defined in claim 3 wherein said perylene dye is represented by the formula ##STR10##
Claim 6
Dependent Claim
25 words
The composition as defined in claim 2 wherein Z is halogen, W is alkoxy having from 1 to 10 carbon atoms and p is 1.
Claim 7
Dependent Claim
17 words
The composition as defined in claim 5 wherein said perylene dye is represented by the formula ##STR11##
Claim 8
Dependent Claim
28 words
A liquid crystal display device comprising a layer of liquid crystal composition as defined in claim 1 and means for creating an image in said liquid crystal layer.
Claim 9
Dependent Claim
18 words
The display device as defined in claim 7 wherein said liquid crystal material is nematic liquid crystal material.
Claim 10
Dependent Claim
21 words
The display device as defined in claim 8 wherein Z is --CF 3 , W is hydrogen and p is 3.
Claim 11
Dependent Claim
18 words
The display device as defined in claim 9 wherein said perylene dye is represented by the formula ##STR12##
Claim 12
Dependent Claim
26 words
The display device as defined in claim 8 wherein Z is halogen, W is alkoxy having from 1 to 10 carbon atoms and p is 1.
Claim 13
Dependent Claim
18 words
The diplay device as defined in claim 11 wherein said perylene dye is represented by the formula ##STR13##
Claim 14
Dependent Claim
116 words
A perylene compound represented by the formula ##STR14## wherein W is hydrogen or a substituent other than hydrogen; Z is a substituent other than hydrogen; R 5 is hydrogen, halogen, alkyl having from 1 to 10 carbon atoms, alkoxy having from 1 to 10 carbon atoms, phenyl, cyano, nitro, ##STR15## R 7 is hydrogen, alkyl having from 1 to 10 carbon atoms, phenyl or biphenyl; R 8 is alkyl having from 1 to 10 carbon atoms, phenyl or biphenyl; n is 1 or 2 and p is an integer of from 1 to 3; said W and Z substitution being sufficient to provide the biphenylene radicals to which they are attached with a non-coplanar molecular configuration.
Claim 15
Dependent Claim
116 words
A perylene compound represented by the formula ##STR14## wherein W is hydrogen or a substituent other than hydrogen; Z is a substituent other than hydrogen; R 5 is hydrogen, halogen, alkyl having from 1 to 10 carbon atoms, alkoxy having from 1 to 10 carbon atoms, phenyl, cyano, nitro, ##STR15## R 7 is hydrogen, alkyl having from 1 to 10 carbon atoms, phenyl or biphenyl; R 8 is alkyl having from 1 to 10 carbon atoms, phenyl or biphenyl; n is 1 or 2 and p is an integer of from 1 to 3; said W and Z substitution being sufficient to provide the biphenylene radicals to which they are attached with a non-coplanar molecular configuration.
Claim 16
Dependent Claim
23 words
The compound as defined in claim 13 wherein Z is --CF 3 , W is hydrogen, p is 3 and n is 1.
Claim 17
Dependent Claim
28 words
The compound as defined in claim 13 wherein Z is halogen, W is alkoxy having from 1 to 10 carbon atoms, p is 1 and n is 1.
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