Polyimide
    31.
    发明授权
    Polyimide 失效
    聚酰亚胺

    公开(公告)号:US5830976A

    公开(公告)日:1998-11-03

    申请号:US906101

    申请日:1997-08-05

    摘要: A polyamic acid is herein disclosed which contains a structural unit represented by the formula �2a! ##STR1## wherein m is an integer of 1 to 20; n is an integer of 1 to 2; and R.sup.2 is an alkyl group or an alkoxy group having 1 to 20 carbon atoms. Furthermore, a polyamic acid composition is also disclosed which comprises the polyamic acid containing the structural unit represented by the formula �2a! and another polyamic acid containing a structural unit other than mentioned above. By heating the polyamic acid or the polyamic acid composition at a low temperature for a short time, a liquid crystal alignment film can be obtained which comprises a polyimide or a polyimide composition.

    摘要翻译: 本文公开了含有由式[2a] 20表示的结构单元的聚酰胺酸; n为1〜2的整数, R2为碳原子数1〜20的烷基或烷氧基。 此外,还公开了一种聚酰胺酸组合物,其包含含有由式[2a]表示的结构单元的聚酰胺酸和另外包含除上述以外的结构单元的聚酰胺酸。 通过在短时间内在低温下加热聚酰胺酸或聚酰胺酸组合物,可以得到包含聚酰亚胺或聚酰亚胺组合物的液晶取向膜。

    4'-substituted-phenyl .alpha.-methyl-.beta.-(4-substituted-phenyl)
propionates
    32.
    发明授权
    4'-substituted-phenyl .alpha.-methyl-.beta.-(4-substituted-phenyl) propionates 失效
    4'-取代苯基α-甲基-β-(4-取代苯基)丙酸酯

    公开(公告)号:US4686305A

    公开(公告)日:1987-08-11

    申请号:US709398

    申请日:1985-03-07

    申请人: Shigeru Sugimori

    发明人: Shigeru Sugimori

    IPC分类号: C09K19/30 C07C69/76

    CPC分类号: C09K19/3068

    摘要: A novel compound useful as a component of liquid crystal compositions, for lowering their melting point without lowering so much the clearing point in the mesomorphic range of the compositions, and a liquid crystal composition containing the same are provided, which compound is expressed by the general formula ##STR1## wherein R.sup.1 is alkyl or alkoxy each of 1-15 C; n is 1 or 2; and X is ##STR2## wherein R.sup.2 is alkyl or alkoxy each of 1-15 C, when n is 1, or F, Cl, CN, alkyl or alkoxy each of 1-15 C when n is 2.

    摘要翻译: 用作液晶组合物成分的新型化合物,为了降低其熔点而不会降低组合物的介晶范围内的澄清点,以及含有该组合物的液晶组合物,该化合物由通式 其中R1是1-15个碳原子的烷基或烷氧基; n为1或2; 其中当n为1时,X为,其中R 2为1-15个碳原子的烷基或烷氧基,当n为2时,各为1-15个碳原子的F,Cl,CN,烷基或烷氧基。

    Cyclohexanecarbonylic acid ethyl ester derivatives
    33.
    发明授权
    Cyclohexanecarbonylic acid ethyl ester derivatives 失效
    环己烷羧酸乙酯衍生物

    公开(公告)号:US4617142A

    公开(公告)日:1986-10-14

    申请号:US717040

    申请日:1985-03-28

    申请人: Shigeru Sugimori

    发明人: Shigeru Sugimori

    CPC分类号: C09K19/3068

    摘要: A liquid crystal compound having a positive value of dielectric anisotropy and a low viscosity and being capable of extending the mesomorphic range of liquid crystal composition toward its lower region, and a liquid crystal composition containing the same are provided, which compound is a trans-4-substituted-cyclohexanecarboxylic acid .beta.-(4-halogenophenyl) ethyl ester derivative expressed by the general formula ##STR1## wherein R.sup.1 represents R.sup.2, ##STR2## wherein R.sup.2 represents an alkyl group or an alkoxy group, each having 1 to 15 carbons and X represents F or Cl.

    摘要翻译: 提供具有介电各向异性正值和低粘度并能够将液晶组合物的介晶范围延伸到其下部区域的液晶化合物和含有该液晶组合物的液晶组合物,该化合物是反式-4 - 取代的环己烷羧酸β-通式(Ⅰ)表示的β-(4-卤苯基)乙酯衍生物,其中R1表示R2,其中R2表示烷基或烷氧基,各自具有1至15个碳,X表示 表示F或Cl。

    High temperature liquid crystal substances of four rings and liquid
crystal compositions containing the same
    34.
    发明授权
    High temperature liquid crystal substances of four rings and liquid crystal compositions containing the same 失效
    四环的高温液晶物质和含有它们的液晶组合物

    公开(公告)号:US4472293A

    公开(公告)日:1984-09-18

    申请号:US513161

    申请日:1983-07-12

    CPC分类号: C09K19/3003 C09K19/3098

    摘要: Liquid crystal compounds which exhibit a liquid crystal phase within a broad temperature range and have a high clearing point and nevertheless a low viscosity, and liquid crystal compositions containing the same are provided, which liquid crystal compounds have positive dielectric anisotropy values and are expressed by the general formula ##STR1## wherein R represents hydrogen atom or an alkyl group of 1 to 10 carbon atoms; ##STR2## Y represents H or F; and X represent a halogen atom or CN.

    摘要翻译: 在广泛的温度范围内呈液晶相,具有高透明度和低粘度的液晶化合物,以及含有该液晶化合物的液晶组合物,具有正的介电各向异性值,由 通式(Ⅰ)其中R表示氢原子或1〜10个碳原子的烷基; Y表示H或F; X表示卤素原子或CN。

    Liquid crystal benzene derivatives
    35.
    发明授权
    Liquid crystal benzene derivatives 失效
    液晶苯衍生物

    公开(公告)号:US4422951A

    公开(公告)日:1983-12-27

    申请号:US358794

    申请日:1982-03-16

    摘要: Benzene derivatives useful as a component of liquid crystal compositions are provided which are expressed by the general formula ##STR1## wherein R represents a hydrogen atom or an alkyl group of 1 to 10 carbon atoms; R' represents a hydrogen atom, an alkyl group of 1 to 10 carbon atoms or an alkoxy group of 1 to 10 carbon atoms; and ##STR2## represents ##STR3## The derivatives exhibit small values of positive dielectric anisotropy; have broader liquid crystal temperature ranges; and in particular, have higher liquid crystalline-transparent points and yet have lower viscosities.

    摘要翻译: 提供用作液晶组合物组分的苯衍生物,其通式为其中R表示氢原子或1-10个碳原子的烷基的通式表示; R'表示氢原子,1〜10个碳原子的烷基或1〜10个碳原子的烷氧基; 并且表示衍生物表现出小的正介电各向异性值; 具有更宽的液晶温度范围; 特别是具有较高的液晶透明点,但具有较低的粘度。

    Carboxylic acid ester derivatives of 4-fluorophenol
    37.
    发明授权
    Carboxylic acid ester derivatives of 4-fluorophenol 失效
    4-氟苯酚的羧酸酯衍生物

    公开(公告)号:US4399298A

    公开(公告)日:1983-08-16

    申请号:US233776

    申请日:1981-02-12

    IPC分类号: C09K19/20 C07C69/76

    CPC分类号: C09K19/2007

    摘要: Novel fluorine-containing organic compounds having a positive dielectric anisotropy, useful as component(s) of liquid crystal compositions, and liquid crystal compositions containing the same are provided. The compounds have the general formula ##STR1## R.sub.1 and R.sub.3 both are 1-10 C alkyl or alkoxy; R.sub.2 is H or 1-10 C alkyl; and R.sub.4 is 1-10 C alkyl.

    摘要翻译: 提供具有正的介电各向异性的新型含氟有机化合物,可用作液晶组合物的组分,以及含有它们的液晶组合物。 这些化合物具有通式“IMAGE”,其中Z是R1和R3都是1-10C烷基或烷氧基; R2是H或1-10C烷基; R4为1-10C烷基。

    Polyimide
    38.
    发明授权
    Polyimide 失效
    聚酰亚胺

    公开(公告)号:US5693379A

    公开(公告)日:1997-12-02

    申请号:US546090

    申请日:1995-10-20

    摘要: A polyamic acid is herein disclosed which contains a structural unit represented by the formula �2a! ##STR1## wherein m is an integer of 1 to 20; n is an integer of 1 to 2; and R.sup.2 is an alkyl group or an alkoxy group having 1 to 20 carbon atoms. Furthermore, a polyamic acid composition is also disclosed which comprises the polyamic acid containing the structural unit represented by the formula �2a! and another polyamic acid containing a structural unit other than mentioned above. By heating the polyamic acid or the polyamic acid composition at a low temperature for a short time, a liquid crystal alignment film can be obtained therefore.

    摘要翻译: 本文公开了含有由式[2a] 20表示的结构单元的聚酰胺酸; n为1〜2的整数, R2为碳原子数1〜20的烷基或烷氧基。 此外,还公开了一种聚酰胺酸组合物,其包含含有由式[2a]表示的结构单元的聚酰胺酸和另外包含除上述以外的结构单元的聚酰胺酸。 通过在短时间内在低温下加热聚酰胺酸或聚酰胺酸组合物,可以得到液晶取向膜。

    High temperature liquid-crystalline ester compounds
    40.
    发明授权
    High temperature liquid-crystalline ester compounds 失效
    高温液晶酯化合物

    公开(公告)号:US4701547A

    公开(公告)日:1987-10-20

    申请号:US683631

    申请日:1984-12-19

    CPC分类号: C07C255/00 C09K19/3068

    摘要: New liquid-crystalline ester compounds which exhibit a liquid-crystalline phase within a broad temperature range and have a positive, dielectric anisotropy, and a liquid-crystalline composition comprising the same are provided which ester compounds are expressed by the general formula ##STR1## wherein R represents hydrogen atom or an alkyl group of 1 to 10 carbon atoms; ##STR2## each represent ##STR3## X represents ##STR4## Y represents hydrogen atom, F, Cl or CN; and Z represents F, Cl or CN.

    摘要翻译: 提供了在广泛的温度范围内具有正的介电各向异性的液晶相和包含该液晶的组合物的新的液晶酯化合物,其中酯化合物由通式(IMAGE)( I)其中R表示氢原子或1-10个碳原子的烷基; 每个表示 X表示 Y表示氢原子,F,Cl或CN; Z表示F,Cl或CN。