US4737310A
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Liquid crystal composition containing azo dyes
Assignee: Mitsubishi Chemical Corp
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Filing: 1986-05-19
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Granted: 1988-04-12
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Expires: 2006-05-19
Abstract
Abstract A liquid crystal composition containing azo dyes represented by the formula (I 0 ) ##STR1## wherein X represents ##STR2## A 1 represents --O-- or --NH--; R 1 represents a hydrogen atom, an alkyl group, an alkoxyalkyl group, an aryloxyalkyl group, a dialkylaminoalkyl group, an arylaminoalkyl group, a cycloalkyl group, an alkoxy group, an alkoxyalkoxy group, an arylalkoxy group, an aryl group, a halogen atom or a group of ##STR3## D 1 and D 2 each represents an aromatic group which does not contain an ionic group; U 1 and U 2 each represents a hydrogen atom, a halogen atom, a methyl group, a methoxy group or an ethoxy group; Y 1 represents --O-- or ##STR4## R represents a hydrogen atom, an alkyl group or may be connected to Z 10 to Z 12 to form a ring; Z 4 to Z 12 each represents a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, a hydroxy group, an acylamino group or a cyano group, or Z 4 and Z 5 , Z 7 and Z 8 , and Z 10 and Z 11 may be connected to each other to form an aromatic ring; and n represents 0, 1 or 2.
Inventors
- 👤 Shuji Imazeki
- 👤 Akio Mukoh
- 👤 Mikio Sato
- 👤 Masaharu Kaneko
- 👤 Tomio Yoneyama
- 👤 Junko Iwanami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:55
CPC Classifications
C; C09; C09B; C09B29/00; C09B31/00; C09B35/00; C09B43/00; C09B43/08; C09B43/10; C09B43/28; C09K; C09K19/00; C09K19/52; C09K19/60; C09K19/601
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
364 words
A liquid crystal composition containing azo dyes represented by the formula (I-1) ##STR148## wherein Y represents a hydrogen atom, an alkyl group, an alkoxy group, a nitro group, a cyano group, a carboxylic acid ester group, an acyloxy group, an aryl group, an alkylsulfonyl group, a halogen atom or ##STR149## wherein R 2 and R 3 each represents a hydrogen atom, an alkyl group, or R 2 and R 3 may be connected to each other to form a nitrogen containing ring; X represents ##STR150## R 1 represents a hydrogen atom, an alkyl group, an alkoxyalkyl group, an aryloxyalkyl group, a dialkylaminoalkyl group, an arylaminoalkyl group, an alkoxy group, an alkoxyalkoxy group, an arylalkoxy group, an aryl group, a halogen atom or a group of ##STR151## D 2 represents an aromatic group which does not contain an ionic group; U 1 and U 2 each represents a hydrogen atom, a halogen atom, a methyl group, a methoxy group or an ethoxy group; Y 1 represents --O-- or ##STR152## R represents an alkyl group or may be connected to Z 10 to Z 12 to form a ring; Z 1 to Z 3 each represents a hydrogen atom, a halogen atom, a methyl group, a hydroxy group, a methoxy group, a cyano group, or Z 1 , Z 2 or Z 3 may be connected to R 2 or R 3 to form a nitrogen containing ring; Z 4 to Z 12 each represents a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, a hydroxy group, an acylamino group or a cyano group, or Z 1 and Z 2 , Z 4 and Z 5 , Z 7 and Z 8 , and Z 10 and Z 11 may be connected to each other to form an aromatic ring; and n represents 0, 1 or 2; with the proviso that at least one of (Z 1 and Z 2 ), (Z 4 and Z 5 ), and (Z 7 and Z 8 ) is connected to each other to form an aromatic ring when R 1 is not a group of ##STR153## and that the dye does not contain a cyclohexyl group.
Claim 2
Dependent Claim
364 words
A liquid crystal composition containing azo dyes represented by the formula (I-1) ##STR148## wherein Y represents a hydrogen atom, an alkyl group, an alkoxy group, a nitro group, a cyano group, a carboxylic acid ester group, an acyloxy group, an aryl group, an alkylsulfonyl group, a halogen atom or ##STR149## wherein R 2 and R 3 each represents a hydrogen atom, an alkyl group, or R 2 and R 3 may be connected to each other to form a nitrogen containing ring; X represents ##STR150## R 1 represents a hydrogen atom, an alkyl group, an alkoxyalkyl group, an aryloxyalkyl group, a dialkylaminoalkyl group, an arylaminoalkyl group, an alkoxy group, an alkoxyalkoxy group, an arylalkoxy group, an aryl group, a halogen atom or a group of ##STR151## D 2 represents an aromatic group which does not contain an ionic group; U 1 and U 2 each represents a hydrogen atom, a halogen atom, a methyl group, a methoxy group or an ethoxy group; Y 1 represents --O-- or ##STR152## R represents an alkyl group or may be connected to Z 10 to Z 12 to form a ring; Z 1 to Z 3 each represents a hydrogen atom, a halogen atom, a methyl group, a hydroxy group, a methoxy group, a cyano group, or Z 1 , Z 2 or Z 3 may be connected to R 2 or R 3 to form a nitrogen containing ring; Z 4 to Z 12 each represents a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, a hydroxy group, an acylamino group or a cyano group, or Z 1 and Z 2 , Z 4 and Z 5 , Z 7 and Z 8 , and Z 10 and Z 11 may be connected to each other to form an aromatic ring; and n represents 0, 1 or 2; with the proviso that at least one of (Z 1 and Z 2 ), (Z 4 and Z 5 ), and (Z 7 and Z 8 ) is connected to each other to form an aromatic ring when R 1 is not a group of ##STR153## and that the dye does not contain a cyclohexyl group.
Claim 3
Dependent Claim
31 words
A liquid crystal composition as claimed in claim 1, wherein Y in the formula (I-1) represents an alkyl group, a carboxylic acid ester group, an aryl group or an alkylsulfonyl group.
Claim 4
Dependent Claim
17 words
A liquid crystal composition as claimed in claim 1, wherein X in the formula (I-1) represents ##STR154##
Claim 5
Dependent Claim
51 words
A liquid crystal composition as claimed in claim 1, wherein R 1 in the formula (I-1) represents a hydrogen atom, an alkyl group, an alkoxyalkyl group, an aryloxyalkyl group, a dialkylaminoalkyl group, an arylaminoalkyl group, an alkoxy group, an alkoxyalkoxy group, an arylalkoxy group, an aryl group or a halogen atom.
Claim 6
Dependent Claim
21 words
A liquid crystal composition as claimed in claim 1, wherein R 1 in the formula (I-1) represents a group of ##STR155##
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-04-12 | 1991-10-12 | 1992-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-12 | 1995-10-12 | 1996-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-12 | 1999-10-12 | 2000-04-12 | $7700.00 | Window Closed / Lapsed |