EP0191860A1
Expired / Lapsed
EP
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Liquid crystal compound
Assignee: Seiko Instruments Inc
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Filing: 1985-05-30
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Granted: —
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Expires: 2005-05-30
Abstract
Abstract Optically active liquid crystal compounds represented by general formula (I), wherein A and B each represents -0-, II, III or IV, wherein '-' represents a direct bond, one of R, and R, represents a straight-chain alkyl group, and the other represents an alkyl group containing an asymmetic carbon atom or an alkoxyalkyl group having an asymmetric carbon atom and an ether bond, with the asymmetric carbon atom having one of -CH 3 , -CN, and -Cl are disclosed. Many of these liquid crystal compounds are revealed to show a SmC phase in a wide temperature range around room temperature and perform a rapid response.
Inventors
- 👤 Masaaki Taguchi
- 👤 Takamasa Harada
- 👤 Hitoshi Itami Factory Teikoku Chemical Suenaga
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 09:12
CPC Classifications
C; C07; C07D; C07D239/00; C07D239/02; C07D239/24; C07D239/26; C07D239/28; C07D239/32; C07D239/34; C07D239/46; C07D239/52; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/34; C09K19/3441; C09K19/345; C09K19/3458; C09K19/3463
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
79 words
An optically active liquid crystal compound shown in a general formula (in the formula, A and B respectively show -, -0-, ( - show direct bond ), one of R 1 and R 2 shows direct chain alkyl group, and the other shows either the alkyl group holding asymmetric carbon atom or the alcoxy alkyl group holding asymmetric carbon atom and ether bonding. Onto the asymmetric carbon atom, one of the groups -CH 3 , -CN, -C1, is added.
Claim 2
Dependent Claim
79 words
An optically active liquid crystal compound shown in a general formula (in the formula, A and B respectively show -, -0-, ( - show direct bond ), one of R 1 and R 2 shows direct chain alkyl group, and the other shows either the alkyl group holding asymmetric carbon atom or the alcoxy alkyl group holding asymmetric carbon atom and ether bonding. Onto the asymmetric carbon atom, one of the groups -CH 3 , -CN, -C1, is added.
Claim 3
Dependent Claim
37 words
Liquid crystal compound as claimed in claim 1, shown in the following formula; (in the formula, R 3 * shows the alkyl group that has asymmetric carbon atom, and R 4 shows the direct chain alkyl group)
Claim 4
Dependent Claim
34 words
Liquid crystal compound as claimed in claim 1, shown in the following formula; (R 3 * shows the alkyl group having the asymmetric carbon atom, and R 4 shows the direct chain alkyl group)
Claim 5
Dependent Claim
32 words
Liquid crystal compound as claimed in claim 1, shown in the following formula: (R 3 * shows the alkyl group having asymmetric carbon atom, and R 4 shows the direct alkyl group)
Claim 6
Dependent Claim
38 words
Liquid crystal compound shown in the following formula; ( m stands for integral number from 0 to 8 , n stands for integral number 5 to 14, X shows either -Cl ro-CN, * shows the asymmetric carbon atom)
Claim 7
Dependent Claim
38 words
Liquid crystal compound shown in the following formula; ( m stands for integral number from 0 to 8 , n stands for integral number 5 to 14, X shows either -Cl ro-CN, * shows the asymmetric carbon atom)
Claim 8
Dependent Claim
35 words
Liquid crystal compound as ciaimed in claim 1, shown in the following formula; (m shows the integral number 1 to 8, n shows the integral number 5 to 14, and * shows asymmetric carbon atom)
Claim 9
Dependent Claim
33 words
Liquid crystal compound as claimed in claim 1, shown in the following formula; (R 3 * shows the alkyl group having asymmetric carbon atom, and R 4 shows the direct chain alkyl group)
Claim 10
Dependent Claim
33 words
Liquid crystal compound as claimed in claim 1, shown in the following formula; (wherein, R 3 * shows the alkyl group having asymmetric carbon atom, and R 4 shows direct chain alkyl group)
Claim 11
Dependent Claim
33 words
Liquid crystal compound as claimed in claim 1, shown in the following formula; (wherein, R 3 * shows the alkyl group having asymmetric carbon atom, and R 4 shows direct chain alkyl group)
Claim 12
Dependent Claim
33 words
Liquid crystal compound as claimed in claim 1, shown in the following formula: (wherein, R 3 * shows the alkyl group having asymmetric carbon atom, and R 4 shows direct chain alkyl group)
Claim 13
Dependent Claim
33 words
Liquid crystal compound as claimed in claim 1, shown in the following formula; (wherein, R 3 * shows the alkyl group having asymmetric carbon atom, and R 4 shows direct chain alkyl group)
Claim 14
Dependent Claim
33 words
Liquid crystal compound as claimed in claim 1, shown in the following formula; (wherein, R 3 * shows the alkyl group having asymmetric carbon atom, and R 4 shows direct chain alkyl group)
Claim 15
Dependent Claim
33 words
Liquid crystal compound as claimed in claim 1, shown in the following formula; (wherein, R 3 * shows the alkyl group having asymmetric carbon atom, and R 4 shows direct chain alkyl group)
Claim 16
Dependent Claim
33 words
Liquid crystal compound as claimed in claim 1, shown in the following formula; (wherein, R 3 * shows the alkyl group having asymmetric carbon atom, and R 4 shows direct chain alkyl group)
References Cited (Backward Citations)
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