EP0260077A1
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EP
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Phenyl pyrimidine compound and liquid crystalline composition
Assignee: Ajinomoto Co Inc
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Filing: 1987-09-04
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Granted: —
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Expires: 2007-09-04
Abstract
Abstract A phenyl pyrimidine compound of this invention represented by the following formula (I) forms a smetic C phase and is useful for a constituent of a ferroelectric liquid crystal composition. R₁-Ph-Py-R₂ (I) wherein Ph represents 1,4-phenylene group, Py represents 2,5-pyrimidine, R₁ and R₂ represent independently an acyloxy group or alcoxy group, either R₁ or R₂ represents a linear acyloxy group or a linear alcoxy group having more than seven carbon atoms. The compound of this invention has a properties of ① a low viscosity, ② of forming a smetic C phase (Sc), ③ of being more than 70°C of an upper limit temperature of a Sc phase. By applying these properties it is able to give a good alignment effect of a composition comprising the compound using a conventional alignment effect of a TN type cell.
Inventors
- 👤 Takao Sakurai
- 👤 Tadahiko Yokota
- 👤 Eri Komatsu
- 👤 Naoko Mikami
- 👤 Ryoichi Higuchi
- 👤 Koji Takeuchi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 12:16
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/34; C09K19/3441; C09K19/345; C09K19/3458; C07; C07D; C07D239/00; C07D239/02; C07D239/24; C07D239/28; C07D239/32; C07D239/34
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
56 words
A phenyl pyrimidine compound represented by the following formula (I) R₁-Ph-Py-R₂ (I) wherein Ph represents a 1,4-phenylene group and Py represents a 2,5-pyrimidyl group, R₁ and R₂ represent independently a linear acyloxy group or alkoxy group, and either R₁ or R₂ represents a linear acyloxy group or linear alkoxy group having more than seven carbon atoms.
Claim 2
Dependent Claim
56 words
A phenyl pyrimidine compound represented by the following formula (I) R₁-Ph-Py-R₂ (I) wherein Ph represents a 1,4-phenylene group and Py represents a 2,5-pyrimidyl group, R₁ and R₂ represent independently a linear acyloxy group or alkoxy group, and either R₁ or R₂ represents a linear acyloxy group or linear alkoxy group having more than seven carbon atoms.
Claim 3
Dependent Claim
18 words
A smectic C liquid crystal composition comprising at least one phenyl pyrimidine compound as claimed in claim 1.
Claim 4
Dependent Claim
72 words
A smectic C liquid crystal composition comprising at least one phenyl pyrimidine compound as claimed in claim 1, and at least one smectic C liquid crystal compound represented by the following formula (II): R₃-Ph-Py-R₄ (II) wherein Ph represents a 1,4-phenylene group, Py represents a 2,5-pyrimidyl group, and either R₃ or R₄ independently represents a linear alkyl group, a linear acyloxy group, or a linear alkoxy group having more than seven carbon atoms.
Claim 5
Dependent Claim
57 words
A smectic C liquid crystal composition comprising at least one phenyl pyrimidine compound as claimed in claim 1, and at least one smectic C liquid crystal compound represented by the following formula (III) R₅-Ph-COO-Ph-R₆ (III) wherein Ph represents a 1,4-phenylene group, and either R₅ or R₆ represents independently a linear alkyl group or a linear alkoxy group.
Claim 6
Dependent Claim
63 words
A smectic C liquid crystal composition comprising at least one phenyl pyrimidine compound as claimed in claim 1, and at least one smetic C liquid crystal compound represented by the following formula (IV) R₇-Ph-Ph-R₈ (IV) wherein Ph represents a 1,4-phenylene group, and either R₇ or R₈ represents independently a linear alkyl group, a linear alkoxy group, an acyloxy group or an alkoxycarbonyl group.
Claim 7
Dependent Claim
18 words
A liquid crystal composition as claimed in any of claims 2 to 5, which has a nematic phase.
Claim 8
Dependent Claim
30 words
A chiral smectic C liquid crystal composition comprising a smectic C liquid crystal omposition as claimed in any of claims 2 to 5, and at least one optically active compound.
Claim 9
Dependent Claim
156 words
A chiral smetic C liquid crystal composition as claimed in claim 7, wherein a chiral substance represents a compound represented by the following formula (V) wherein R₉ represents a linear or branched alkyl group, an alkyl halide group, an alkoxyalkyl group or an aralkyl group having from one to eighteen carbon atoms; R₁₀ represents an alkyl group; the carbon atom marked * represents an optically active carbon atom; a, b or c is independently 0, 1 or 2 and the sum of a, b and c is more than 2; A represents a single bond, -O-, -COO, -O-COO, -O-CH₂- or -OCO-; B and C represent independently a single bond, -COO-, -OCO-, -N=CH-, -CH=N-, -CH₂O-, -OCH₂ or -CH=CH-; D represents -COOCH₂-, -OCOOCH₂-, -OCH₂- or -OCO-; and X, Y and Z represent independently a 1,4-phenylene group, a 2,5-pyrimidine group, a 2,5-pyradine group or a 1,4-phenylene group substituted by at least one halogen atom, cyano group or nitro group.
Claim 10
Dependent Claim
39 words
A phenyl pyrimidine substance represented by the following general formula (VI) R₁-Ph-Py-OH (IV) wherein Ph represents a 1,4-phenylene group, Py represents a 2,5-pyrimidine group, R₁ represents an acyloxy group or an alkoxy group having more than seven carbon atoms.
Claim 11
Dependent Claim
39 words
A phenyl pyrimidine substance represented by the following general formula (VI) R₁-Ph-Py-OH (IV) wherein Ph represents a 1,4-phenylene group, Py represents a 2,5-pyrimidine group, R₁ represents an acyloxy group or an alkoxy group having more than seven carbon atoms.
References Cited (Backward Citations)
FR2164702A1
Cited
EP0191860A1
Cited
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