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45 条记录 (耗时 0.023 秒)

    Recording material
    1.
    发明授权
    Recording material 失效
    录音材料

    公开(公告)号：US5346878A

    公开(公告)日：1994-09-13

    申请号：US108500

    申请日：1993-08-18

    申请人： Masakatsu Nakatsuka ,  Naomasa Koike ,  Akinori Okada

    发明人： Masakatsu Nakatsuka ,  Naomasa Koike ,  Akinori Okada

    IPC分类号： B41M5/30 ,  B41M5/333 ,  B41M5/337 ,  C07C271/28 ,  C07C271/58 ,  C07C333/08 ,  C07C333/24

    CPC分类号： C07C333/24 ,  B41M5/3335 ,  B41M5/3375 ,  C07C271/28 ,  C07C271/58 ,  C07C333/08 ,  B41M5/3336

    摘要： The heat-sensitive recording material disclosed comprises a colorless or pale colored dyestuff precursor, one or more salicylic acid derivative of the formula (1) or metal salt of the derivative and an aliphatic amide compound having 18.about.60 carbon atoms in molecular structure, and is excellent in thermal response and preservation stability of white portions and images. ##STR1## wherein X.sub.1 and X.sub.2 are a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, an aralkyl group or an aryl group, Y.sub.1 and Y.sub.2 are an oxygen atom or a sulfur atom, R.sub.1 is a hydrogen atom, an alkyl group, an aralkyl group or an aryl group, and R.sub.2 is an alkyl group, an alkenyl group, an aralkyl group or an aryl group.

    摘要翻译： 所公开的热敏记录材料包括无色或浅色染料前体，一种或多种式（1）的水杨酸衍生物或衍生物的金属盐和分子结构中具有18个碳原子的脂族酰胺化合物，以及 白色部分和图像的热响应和保存稳定性优异。 （1）其中X1和X2是氢原子，卤素原子，烷基，烷氧基，芳烷基或芳基，Y1和Y2是氧原子或硫原子，R1是 氢原子，烷基，芳烷基或芳基，R2为烷基，烯基，芳烷基或芳基。

    Recording material comprising crystal of fluoran compound
    4.
    发明授权
    Recording material comprising crystal of fluoran compound 失效
    包含荧烷化合物晶体的记录材料

    公开(公告)号：US5300473A

    公开(公告)日：1994-04-05

    申请号：US28911

    申请日：1993-03-08

    申请人： Masakatsu Nakatsuka ,  Atsuo Otsuji ,  Kiyoharu Hasegawa ,  Kazuyoshi Kikkawa ,  Akihiro Yamaguchi

    发明人： Masakatsu Nakatsuka ,  Atsuo Otsuji ,  Kiyoharu Hasegawa ,  Kazuyoshi Kikkawa ,  Akihiro Yamaguchi

    IPC分类号： B41M5/145 ,  B41M5/327 ,  C09B11/24 ,  C09B67/48 ,  B41M5/30 ,  B41M5/32

    CPC分类号： C09B67/0025 ,  B41M5/1455 ,  B41M5/3275 ,  C09B11/24

    摘要： Disclosed are a crystal of a fluoran compound having the formula comprising exhibiting high peaks at diffraction angles (2.theta.) of 7.5.degree. and 17.0.degree. and relatively high peaks at diffraction angles (2.theta.) of 15.1.degree., 19.1.degree., 21.5.degree. and 25.3.degree. in an X-ray diffraction diagram by the CU-K.alpha. beam and a crystal of a fluoran compound having the formula (II) comprising exhibiting high peaks at diffraction angles (2.theta.) of 5.5.degree. and 19.2.degree. in an X-ray diffraction diagram by the CU-K.alpha. beam, which is useful as a color forming compound in recording materials. ##STR1##

    摘要翻译： 公开了具有以下通式的荧烷化合物的晶体，其包括在7.5度和17.0度的衍射角（2（θ））处呈现高峰，并且在15.1度，19.1度的衍射角（2（θ））处具有相对高的峰， 通过CU-K（α）光束在X射线衍射图中为21.5度和25.3度，并且具有式（II）的荧烷化合物的晶体包括在5.5度的衍射角（2（θ））处表现出高峰 在通过CU-K（α）光束的X射线衍射图中为19.2度，其可用作记录材料中的成色化合物。 （*化学结构*）（I）（*化学结构*）（II）

    Optically active naphthalene derivatives
    7.
    发明授权
    Optically active naphthalene derivatives 失效
    光学活性萘衍生物

    公开(公告)号：US5072021A

    公开(公告)日：1991-12-10

    申请号：US467300

    申请日：1990-01-16

    申请人： Masakatsu Nakatsuka ,  Tsutomu Nishizawa

    发明人： Masakatsu Nakatsuka ,  Tsutomu Nishizawa

    IPC分类号： C07C69/75 ,  C07C69/773 ,  C07C69/92 ,  C07C69/94 ,  C09K19/32 ,  C09K19/58

    CPC分类号： C07C69/94 ,  C07C69/75 ,  C07C69/92 ,  C09K19/322 ,  C09K19/584 ,  C07C2101/14

    摘要： The present invention is directed to optically active compounds each containing a naphthalene skeleton, and to liquid crystal compositions which contain the aforesaid optical active compounds, these compositions being suitable for ferroelectric liquid crystal devices having excellent photostability and chemical stability and having a rapid responsivity. The compounds of the present invention are represented by the general formula ##STR1## wherein X is a hydrogen atom, a halogen atom, a cyano group, an alkyl group or a methoxy group, the latter two groups each having 1 or 2 carbon atoms; and A and B are independently represented by following formula and at least one of them contains an asymmetric carbon atom ##STR2## wherein C and D rings are independent and each of them is a 1,4-phenylene, 2,6-naphthylene, pyrimidine-2,5-diyl, trans-1,4-cyclohexylene, trans-1,3-dioxane-2,5-diyl, trans-1,3-oxathian-2,5-diyl, trans-1,3-dithian-2, 5-diyl or 1,3,2-dioxaborinane-2,5-diyl group; each of m and n is an integer of 0, 1 or 2; each of Z.sub.1, Z.sub.2, Z.sub.3 and Z.sub.4 is a bonding group of one or more selected from the group consisting of a single bond, --C(O)--, --O--, --CH.sub.2 --, --CH.dbd.N--, --N.dbd.CH--, --CH.dbd.CH--, --C.tbd.C--, --N.dbd.N-- and --N(O).dbd.N--; and Y is a hydrogen atom, a halogen atom, a cyano group, a straight-chain or branched alkyl group or an alkenylalkyl group, the latter two groups each having 1 to 20 carbon atoms.

    摘要翻译： 本发明涉及各自含有萘骨架的光学活性化合物和含有上述光学活性化合物的液晶组合物，这些组合物适用于具有优异的光稳定性和化学稳定性并且具有快速响应性的铁电液晶装置。 本发明的化合物由通式（I）表示，其中X是氢原子，卤原子，氰基，烷基或甲氧基，后两个基团各自具有1或2个 碳原子 A和B独立地由下式表示，并且它们中的至少一个含有不对称碳原子，其中C和D环是独立的，并且它们各自是1,4-亚苯基，2,6-亚萘基，嘧啶 -2,5-二基，反式-1,4-亚环己基，反式-1,3-二恶烷-2,5-二基，反式-1,3-氧硫杂-2,5-二基，反式-1,3-二噻烷 -2,5-二基或1,3,2-二氧杂硼烷烷-2,5-二基; m和n各自为0,1或2的整数; Z 1，Z 2，Z 3和Z 4中的每一个是选自单键，-C（O） - ， - O - ， - CH 2 - ， - CH = N - ， - N = CH-，-CH = CH - ， - C 3BOND C - ， - N = N-和-N（O）= N-; Y是氢原子，卤素原子，氰基，直链或支链烷基或链烯基烷基，后两个基团具有1至20个碳原子。