• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    1531405 Liquid crystal compositions MERCK PATENT GmbH 12 Aug 1977 [14 Aug 1976] 33929/77 Heading C4X [Also in Division C2] A liquid crystalline dielectric comprises at least two liquid crystalline components, at least one of said components being a compound of the general formula wherein one of the symbols R 1 and R 2 is CN and the other is R, OR, OCOR or OCOOR in which R is (C 1 -C 12 ) alkyl. Further specified components which may be present are selected from azobenzenes, azoxybenzenes, biphenyls, Schiff bases, phenyl benzoates, optionally halogenated stilbenes, diphenyl-acetylene derivatives, diphenyl nitrones and substituted cinnamic acids. They are useful in the production of electro-optical indicator elements.
    公开号:SU906387A3
    申请号:SU772510803
    申请日:1977-08-11
    公开日:1982-02-15
    发明作者:Айденшинк Рудольф；КРАУЗЕ Йоахим；Поль Людвиг
    申请人:Мерк Патент Гмбх (Фирма)；
    IPC主号:
    专利说明:

    Compounds of the oyster of Formula 1 have dielectric anisotropy (d (+) 10), low values of the transition temperature to nematic (), to the isotropic (transparent) phase T p) as shown in the table.
    4-n-propyl-1- (-cyanophenyl) -cyclohexane 2 45
     -n-hexyl-1-C-cyanophenyl) -cyclohexane 2 47
    4-n-heptyl-1- (4-cyanophenyl) -cyclohexane30 59
    4-N-Oktyl-1- (4-cyanophenyl) -cyclohexane 33 5
    4-N-NONIL-1- (4-cyanophenyl) -cyclohexane35 57
    4-methyl-1- (4-cyanofeiyl) -cyclohexane 38-25
    4-ethyl-1- (4-cyanophenyl) -cycl6hexane 40 k
    Soyline. Not supercooled
    The compounds of formula 1 are valuable components of the HDD. According to the invention, the introduction of compounds of the formula I into known IDs provides a low viscosity of CD and a wide temperature range of the nematic state. As known); {D, for example, nematic substances with positive anisotropy are used: azobenzenes, azoxybenzenes, biphenyls, Schiff bases, phenyl benzoates , stilbene halogenated in some cases, diphenylacetylene derivatives, terphenyls.
    Example t. A mixture of 30 weight.h. 4-n-propyl-1- (4-cyanophenyl) cylohexane, 46,9 g. 4-n-butyl-4-methoxyazobenzene and 23, parts by weight 4-ethyl-4-methoxyazobenzene has a nematic phase with a temperature range from 0 to, dielectric anisotropy DKA (+) 6.5 and viscosity 24 cP at 20 ° C.
    Example 2. A mixture of 15 wt.m. 4-n-prypylphenyl ester of anisic acid, 20 weight.h, 4-n-pentylphenyl ester of anisic acid, 17 weight.h. 4-n-propylphenyl 4-hexanoyloxybenzoate, 10 parts by weight 4 - (4-n-propyl) -biphenyl ester of 4-n-butylbeitic acid, 8 weight.h. 4-n-pentyl-benzyl ester of 4-n-pentylbiphenyl- (4) -carboxylic acid and 30 parts by weight 4-n-propyl-1- {4-cyanophenyl) -cyclohexane has a nematic
    the phase in the temperature range from O to 62 C, DKA (+) 6.8 and viscosity 30 cP at 20 ° C.
    Example 3- A mixture of 35 weight.h. 4-n-pentyl-4-cyanobiphenyl
    5 11 weight.h. 4-n-hexyloxy-4-cyanobiphenyl, 32 parts by weight 4-n-pentyl-1- (4-cyanophenyl) -cyclohexane and 22 parts by weight 4-n-heptyl-1- (4-cyanophenyl) -cyclohexane has a nematic phase with a temperature interval from (-) 1P to +50 C, DQAC) 13.6 and a viscosity of 38 cP at.
    Example 4. A mixture of 27 wt.h. 4-n-pentyl-1- (4-cyanophenyl) -cyclohexane, 8 parts by weight 4-n-pentyl-4-cyano-Vl-terphenyl, 17 wt. including 4-n-propylphenyl ester of anisic acid and 48 wt.h. Anisic acid 4-n-pentylphenyl ester has a nematic phase with a temperature interval from -5 to + 55 ° C, DKA (+) 5.0 and a viscosity of 43 cP at 20 ° C.
    Example 6. A mixture of 33.5 weight.h. 4-n-butyl-4-methoxyazobenzene, 16.5 parts by weight 4-ethyl-4-methoxyazooxybenzene, 10 weight.h. S-4-cyanophenyl ester; -n-pentylthiobenzoic acid, 20 parts by weight 4-n-propyl-1- (4-cyanophenyl) -cyclohexane and 20 parts by weight, 4-n-butyl-1- (4-cyanophenyl) -cyclohexane has a nematic phase in the temperature range from -5 to + 65 ° C , DCL (+) 8.0 and viscosity 29 сП at 20 ° С.
    Example 7. A mixture of 2b, 8 weight.h. 4-n-butyl-4-methoxyazooxybenzene, 13.2 parts by weight 4-ethyl-4-methoxyazroxybenzene, 10 parts by weight 4-n-pentylbenzoic acid 4-cyanophenyl ester, 20 weight.h. 4-n-butyl-1- (4-cyanophenyl) -cyclohexane and 20 weight.h. 4-n-pentyl-1- (4-cyanophenyl) cyclohexane has a nematic phase, in the temperature range from -8 to, DKA +9.5 and a viscosity of 35 cP at. .
    权利要求:
    Claims (2)
    [1]
    1. For the UK V 1306363.3. Gray G.W. et al. Wide area of cl. С 07 С 121/52, С 09 К З / З, nematic medomorphism of mixtures, co-public, 17,11.76. . 5containing Pn-alkyl-And-cyanothermal,
    [2]
    2.Gray G.W. et a: 1. New class non-j. Chem. Soc. Chem. Connunics, 11, Mathematical Liquid Crystals for Dis 31, 197.
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    公开号 | 公开日
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    CH631737A5|1982-08-31|
    JPS5495985A|1979-07-28|
    GB1531405A|1978-11-08|
    AT351618B|1979-08-10|
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    申请号 | 申请日 | 专利标题
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