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US4600527A
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Liquid crystal composition
Assignee: Mitsubishi Chemical Corp
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Filing: 1983-02-10
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Granted: 1986-07-15
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Expires: 2003-02-10
Abstract
Abstract A liquid crystal composition containing azo dyes represented by the formula (I0) <IMAGE> (I0) wherein X represents <IMAGE> A1 represents -O- or -NH-, R1 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 <IMAGE> D1 and D2 each represents an aromatic group which does not contain an ionic group; U1 and U2 each represents a hydrogen atom, a halogen atom, a methyl group, a methoxy group or an ethoxy group; Y1 represents -O- or <IMAGE> R represents a hydrogen atom, an alkyl group or may be connected to Z10 to Z12 to form a ring; Z4 to Z12 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 Z4 and Z5, Z7 and Z8, and Z10 and Z11 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
2026-10-27 12:28
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
208 words
A liquid crystal composition containing azo dyes represented by the formula (I 0 ) ##STR217## wherein X represents ##STR218## A 1 represents --NH--; R 1 represents 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 ##STR219## 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 ##STR220## R represents a hydrogen atom, an alkyl group or an alkyl group 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; with the proviso that the dye does not contain a cyclohexyl group.
Claim 2
Dependent Claim
208 words
A liquid crystal composition containing azo dyes represented by the formula (I 0 ) ##STR217## wherein X represents ##STR218## A 1 represents --NH--; R 1 represents 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 ##STR219## 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 ##STR220## R represents a hydrogen atom, an alkyl group or an alkyl group 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; with the proviso that the dye does not contain a cyclohexyl group.
Claim 3
Dependent Claim
41 words
A liquid crystal composition as claimed in claim 1, wherein the azo dyes are the compounds represented by the formula (I-2) ##STR221## wherein R 1 , X, Z 7 to Z 9 and D 1 are as defined in claim 1.
Claim 4
Dependent Claim
24 words
A liquid crystal composition as claimed in claim 2, wherein U 1 and U 2 each represents a hydrogen atom or a methyl group.
Claim 5
Dependent Claim
82 words
A liquid crystal composition as claimed in claim 2, wherein D 1 in the formula (I-2) is the group represented by the formula ##STR222## wherein D 3 represents an aromatic group which does not contain an ionic group; and Z 13 to Z 15 each represents a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, an acylamino group or a cyano group, and Z 13 and Z 14 may be connected to each other to form an aromatic ring.
Claim 6
Dependent Claim
172 words
A liquid crystal composition as claimed in claim 2, wherein D 1 in the formula (I-2) is the group represented by the formula ##STR223## wherein X' represents ##STR224## wherein U 3 and U 4 each represents a hydrogen atom, a halogen atom, a methyl group, a methoxy group or an ethoxy group; Z 16 to Z 24 each represents a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, an acylamino group or a cyano group, and Z 16 and Z 17 , Z 19 and Z 20 , and Z 22 and Z 23 may be connected to each other to form an aromatic ring; R' represents a hydrogen atom or an alkyl group, or an alkyl group connected to Z 16 to Z 18 to form a nitrogen containing group; and R 1 represents a hydrogen atom, an alkyl group, an alkoxyalkyl group, an aryloxyalkyl group, an alkylaminoalkyl group, a dialkylaminoalkyl group, an arylaminoalkyl group, an alkoxy group, an alkoxyalkoxy group, an aryl group or a halogen atom.
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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) | 1989-07-14 | 1990-01-13 | 1990-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-14 | 1994-01-13 | 1994-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-14 | 1998-01-13 | 1998-07-15 | $7700.00 | Window Closed / Lapsed |