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18 条记录 (耗时 0.025 秒)

    Process for producing p-n-alkylbenzoic acid
    2.
    发明授权
    Process for producing p-n-alkylbenzoic acid 失效
    对正烷基苯甲酸的制备方法

    公开(公告)号：US4467112A

    公开(公告)日：1984-08-21

    申请号：US112710

    申请日：1980-01-16

    申请人： Ryo Matsuura ,  Kazuya Nagaoka ,  Kouji Kusabe ,  Shuichi Nakatani

    发明人： Ryo Matsuura ,  Kazuya Nagaoka ,  Kouji Kusabe ,  Shuichi Nakatani

    IPC分类号： C07C63/04 ,  B01J23/00 ,  B01J31/00 ,  C07B61/00 ,  C07C51/00 ,  C07C51/367 ,  C07C51/377 ,  C07C67/00

    CPC分类号： C07C51/367 ,  C07C51/377

    摘要： p-n-Alkylbenzoic acids having high purity without containing isomers are important as intermediates for liquid crystals. The p-n-alkylbenzoic acid is produced by reacting a p-formylbenzoic acid or its ester with a ketone having the formula ##STR1## wherein R represents a C.sub.1 -C.sub.18 n-alkyl or n-alkenyl group in the presence of a basic catalyst to obtain an unsaturated ketone compound having the formula ##STR2## wherein R is defined above and X represents hydrogen atom or a C.sub.1 -C.sub.6 alkyl group, and then, hydrogenating and reducing the unsaturated ketone compound to obtain the p-n-alkylbenzoic acid having the formula ##STR3##

    摘要翻译： 具有高纯度且不含异构体的对 - 正烷基苯甲酸作为液晶的中间体是重要的。 对 - 烷基苯甲酸是通过使对甲酰基苯甲酸或其酯与式（1）的酮反应而制备的，其中R表示C 1 -C 18正烷基或正 - 链烯基，在碱存在下 催化剂，得到具有式（2）的不饱和酮化合物，其中R定义如上，X表示氢原子或C1-C6烷基，然后氢化和还原不饱和酮化合物，得到pn-烷基苯甲酸 具有式的酸（3）

    Tray loading apparatus for disc players
    5.
    发明授权
    Tray loading apparatus for disc players 失效
    托盘装载装置

    公开(公告)号：US5210725A

    公开(公告)日：1993-05-11

    申请号：US817077

    申请日：1992-01-06

    申请人： Masao Kase ,  Ryo Matsuura ,  Nobuhiro Suzuki

    发明人： Masao Kase ,  Ryo Matsuura ,  Nobuhiro Suzuki

    IPC分类号： G11B15/675 ,  G11B17/04 ,  G11B19/12

    CPC分类号： G11B17/0565 ,  G11B15/675 ,  G11B19/12

    摘要： A control circuit of a tray loading apparatus determines, according to a disc size and a tray moving direction, a time during which to control the motor at a constant speed. When the specified time has elapsed after the motor was started, the control circuit produces a pulse-width modulated output to slowly lower the motor speed, eliminating impact noise when the tray strikes a stopper. This motor deceleration time is measured. When the measured deceleration time disagrees with a preset or previously detected target deceleration time, the difference is either added to or subtracted from a constant-speed motor operation time and the resultant value is taken as the next target time for constant-speed motor operation. In this way, by changing the time during which the motor is driven at a constant speed, any variations in the tray moving speed as might occur from varying loads on the motor are absorbed to keep the motor deceleration time and decelerating speed unchanged, thus making the tray motion smooth.

    摘要翻译： 托盘装载装置的控制电路根据盘尺寸和托盘移动方向确定以恒定速度控制马达的时间。 当电机启动后经过指定时间后，控制电路产生脉冲宽度调制输出，以缓慢降低电机转速，消除托盘撞击停止时的冲击噪音。 测量该电机减速时间。 当所测量的减速时间与预设或先前检测到的目标减速时间不一致时，将该差加到或从一个恒定速度的马达运行时间中减去，并将该结果值作为恒速马达操作的下一个目标时间。 以这种方式，通过改变电机以恒定速度驱动的时间，吸收马达上的负载变化所引起的托盘运动速度的任何变化，以保持马达减速时间和减速速度不变，从而使 托盘运动顺畅。

    Process for preventing scale deposition
    7.
    发明授权
    Process for preventing scale deposition 失效
    防垢垢沉积工艺

    公开(公告)号：US4277257A

    公开(公告)日：1981-07-07

    申请号：US95522

    申请日：1979-11-19

    申请人： Ryo Matsuura ,  Katsumi Matsuzaki ,  Masao Narita

    发明人： Ryo Matsuura ,  Katsumi Matsuzaki ,  Masao Narita

    IPC分类号： C07D307/89 ,  C07C45/00 ,  C07C46/10 ,  C07C50/12 ,  C07C51/42 ,  C07C67/00 ,  B01D47/00

    CPC分类号： C07C46/10 ,  C07C51/42

    摘要： A scale deposition from an aqueous slurry of naphthoquinone and phthalic acid can be prevented by adding fine crystals of phthalic acid to the aqueous slurry of naphthoquinone and phthalic acid collected, which slurry is obtained by contacting a gas resulting from a catalytic gas phase oxidation of naphthalene with water or a mother liquor recycled. The fine crystals of phthalic acid have diameters of less than 100.mu., preferably 10 to 40.mu., and can be in an aqueous slurry of phthalic acid pulverized by a pulverizer.

    摘要翻译： 通过将萘甲酸和邻苯二甲酸的水性浆料中加入邻苯二甲酸的微细结晶，可以防止由萘醌和邻苯二甲酸的水性浆料的沉积物沉积，该浆料是通过使由萘的催化气相氧化得到的气体 用水或母液回收。 邻苯二甲酸的微细晶体的直径小于100微米，优选为10〜40微米，并且可以是由粉碎机粉碎的邻苯二甲酸的水性浆液。

    Process for separation of naphthoquinone and phthalic acid
    8.
    发明授权
    Process for separation of naphthoquinone and phthalic acid 失效
    分离萘醌和邻苯二甲酸的方法

    公开(公告)号：US5153339A

    公开(公告)日：1992-10-06

    申请号：US392156

    申请日：1982-06-25

    申请人： Ryo Matsuura ,  Tatsuyoshi Komatsu ,  Kenji Usui ,  Toru Sato

    发明人： Ryo Matsuura ,  Tatsuyoshi Komatsu ,  Kenji Usui ,  Toru Sato

    IPC分类号： C07C27/26 ,  C07C27/00 ,  C07C45/00 ,  C07C46/10 ,  C07C50/12 ,  C07C51/00 ,  C07C51/48 ,  C07C63/16 ,  C07C67/00

    CPC分类号： C07C46/10 ,  C07C51/48

    摘要： Naphthoquinone having a purity of higher than 95% is separated from an aqueous slurry of naphthoquinone and phthalic acid prepared by contacting, with an aqueous medium, a reaction mixture gas containing naphthoquinone and phthalic anhydride formed by a catalytic vapor phase oxidation of naphthalene. An extraction of naphthoquinone is carried out with a chain or cyclic saturated hydrocarbon at 60.degree. to 110.degree. C. under the condition adjusting pH to 1.2 to 5 and substantially dissolving phthalic acid in the aqueous phase and leaving resinous materials as a bottom.

    摘要翻译： 通过使含有萘醌的反应混合物气体和通过萘的催化气相氧化形成的邻苯二甲酸酐与水性介质接触而制备的萘醌和邻苯二甲酸的水性浆液分离纯度高于95％的萘醌。 在调节pH为1.2〜5，将邻苯二甲酸基本溶解在水相中并留下树脂状物质作为底部的状态下，用链状或环状的饱和烃在60〜110℃下进行萘醌的萃取。