Patent EP0098522A2 successfully refreshed from Google Patents.
EP0098522A2
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EP
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Liquid crystal composition
Assignee: Mitsubishi Chemical Corp
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Filing: 1983-06-29
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Granted: —
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Expires: 2003-06-29
Abstract
Abstract A liquid crystal composition of the guest-host type contains a pleochroic dye dissolved therein. The dye molecule has an end group or end groups in the molecule represented by the general formula: wherein Ro designates a straight chain alkyl group, in which methylene groups not adjacent to the nitrogen atom may be substituted by oxygen atom or sulfur atom; R1 designates an alkyl group having a chain length different from the alkyl group of Ro or a group in R1 a methylene group not adjacent of the nitrogen atom may be substituted by an oxygen atom or sulfur atom, and R2 designates a hydrogen atom, an alkyl group, alkoxy group, cycloalkyl group or dialkylamino group.
Inventors
- 👤 Masaharu Kaneko
- 👤 Tomio Yoneyama
- 👤 Junko Iwanami
- 👤 Syuji Imazeki
- 👤 Akio Mukoo
- 👤 Mikio Sato
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 20:00
CPC Classifications
C; C09; C09B; C09B69/00; C09B1/00; C09B1/16; C09B1/20; C09B1/50; C09B1/51; C09B1/54; C09B1/542; C09B1/56; C09B19/00; C09B19/02; C09B25/00; C09B29/00; C09B29/0003; C09B29/0011; C09B29/0025; C09B29/0029; C09B29/06; C09B29/08; C09B29/0805; C09B29/0807; C09B29/0809; C09B29/081; C09B29/0811; C09B29/0813; C09B29/24; C09B29/26; C09B3/00; C09B3/14; C09B31/00; C09B31/02; C09B31/04; C09B31/043; C09B31/08; C09B31/12; C09B31/14; C09B31/153; C09B31/157; C09B35/00; C09B35/02; C09B35/039; C09B35/34; C09B57/00; C09B57/08; C09B57/12; C09B57/14; C09K; C09K19/00; C09K19/52; C09K19/60
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
126 words
A liquid crystal composition comprising a host liquid crystal composition and a pleochroic dye dissolved in the composition, as the guest component, characterized in that the pleochroic dye is a aromatic compound having in its molecule an end group represented by the following general formula wherein Ro designates a straight chain alkyl group, in which methylene groups not adjacent to the nitrogen atom may be substituted by a sulfur atom or oxygen atom; R1 designates an alkyl group having a different chain length than R o or the group in R1 a methylene group not adjacent to the nitrogen atom may be substituted by a oxygen atom or sulfur atom, and R2 designates a hydrogen atom, an alkyl group, alkoxy group, cycloalkyl group or dialkylamino group.
Claim 2
Dependent Claim
126 words
A liquid crystal composition comprising a host liquid crystal composition and a pleochroic dye dissolved in the composition, as the guest component, characterized in that the pleochroic dye is a aromatic compound having in its molecule an end group represented by the following general formula wherein Ro designates a straight chain alkyl group, in which methylene groups not adjacent to the nitrogen atom may be substituted by a sulfur atom or oxygen atom; R1 designates an alkyl group having a different chain length than R o or the group in R1 a methylene group not adjacent to the nitrogen atom may be substituted by a oxygen atom or sulfur atom, and R2 designates a hydrogen atom, an alkyl group, alkoxy group, cycloalkyl group or dialkylamino group.
Claim 3
Dependent Claim
18 words
A liquid crystal composition as defined in claim 1, wherein R1 is and Ro is a methyl group.
Claim 4
Dependent Claim
24 words
A liquid crystal composition as defined in claim 1, wherein the dye is at least one member represented by the following general formula :
Claim 5
Dependent Claim
23 words
A liquid crystal composition as defined in claim 1, wherein the dye is at least one member represented by the following general formula:
Claim 6
Dependent Claim
22 words
A liquid crystal composition as defined in claim 1, wherein the dye is least one member represented by the following general formula:
Claim 7
Dependent Claim
24 words
A liquid crystal composition as defined in claim 1, wherein the dye is at least one member represented by the following general formulae: and
References Cited (Backward Citations)
No citation records indexed.
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