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17 条记录 (耗时 0.018 秒)

    Process for preparing carboxylic acid esters from toluene and xylene
    1.
    发明授权
    Process for preparing carboxylic acid esters from toluene and xylene 失效
    从甲苯和二甲苯制备羧酸酯的方法

    公开(公告)号：US4016200A

    公开(公告)日：1977-04-05

    申请号：US658766

    申请日：1976-02-17

    申请人： Takeru Onoda ,  Keisuke Wada ,  Masayuki Otake

    发明人： Takeru Onoda ,  Keisuke Wada ,  Masayuki Otake

    IPC分类号： B01J31/04 ,  C07C67/055 ,  C07C67/05

    CPC分类号： B01J31/1616 ,  B01J31/04 ,  B01J31/223 ,  B01J31/26 ,  B01J31/30 ,  C07C67/035 ,  C07C67/055 ,  B01J2531/52

    摘要： A carboxylic ester is prepared by reacting a hydrocarbon selected from monoolefins having 2 to 6 carbon atoms, benzene, toluene and xylene with an aliphatic saturated carboxylic acid having 2 to 4 carbon atoms and molecular oxygen in the vapor phase in the presence of a supported solid catalyst of palladium metal, an antimony component and a carboxylic acid salt of alkali metal, alkaline earth metal, zinc, cadmium, lead or tin, with the improvement comprising: adding said antimony compound to the support of said catalyst by dipping a carrier into an aqueous solution of water-soluble antimony compound selected from the group consisting of antimonic acid, antimonates and antimony complexes of organic acids.

    摘要翻译： 羧酸酯是通过使选自具有2至6个碳原子的单烯烃，苯，甲苯和二甲苯的烃与具有2至4个碳原子的脂族饱和羧酸和分子氧在气相中在负载的固体存在下反应来制备的 钯金属的催化剂，锑成分和碱金属，碱土金属，锌，镉，铅或锡的羧酸盐，其改进包括：通过将载体浸渍到所述催化剂的载体中而将所述锑化合物加入到所述催化剂的载体中 水溶性锑化合物的水溶液，其选自锑酸盐，锑酸盐和有机酸的锑络合物。

    Process for preparing a carboxylic ester
    2.
    发明授权
    Process for preparing a carboxylic ester 失效
    羧酸酯的制备方法

    公开(公告)号：US3959352A

    公开(公告)日：1976-05-25

    申请号：US556265

    申请日：1975-03-07

    申请人： Takeru Onoda ,  Keisuke Wada ,  Masayuki Otake

    发明人： Takeru Onoda ,  Keisuke Wada ,  Masayuki Otake

    IPC分类号： B01J21/08 ,  B01J23/644 ,  B01J31/04 ,  B01J31/28 ,  C07C67/055 ,  C07C67/05

    CPC分类号： B01J31/28 ,  B01J23/6445 ,  B01J31/04 ,  B01J31/1616 ,  C07C67/055 ,  B01J21/08 ,  B01J2231/321 ,  B01J2531/52

    摘要： A carboxylic ester is prepared by reacting a hydrocarbon selected from monoolefins having 2 to 6 carbon atoms, benzene, toluene and xylene with an aliphatic saturated carboxylic acid having 2 to 4 carbon atoms and molecular oxygen in the vapor phase in the presence of a supported solid catalyst of palladium metal, an antimony component and a carboxylic acid salt of alkali metal, alkaline earth metal, zinc, cadmium, lead or tin, with the improvement comprising: adding said antimony compound to the support of said catalyst by dipping a carrier into an aqueous solution of a water-soluble antimony compound selected from the group consisting of antimonic acid, antimonates and antimony complexes of organic acids.

    摘要翻译： 羧酸酯是通过使选自具有2至6个碳原子的单烯烃，苯，甲苯和二甲苯的烃与具有2至4个碳原子的脂族饱和羧酸和分子氧在气相中在负载的固体存在下反应来制备的 钯金属的催化剂，锑成分和碱金属，碱土金属，锌，镉，铅或锡的羧酸盐，其改进包括：通过将载体浸渍到所述催化剂的载体中而将所述锑化合物加入到所述催化剂的载体中 水溶性锑化合物的水溶液，其选自由锑酸，锑酸盐和有机酸的锑络合物组成的组。

    Manufacture of methacrylic acid
    3.
    发明授权
    Manufacture of methacrylic acid 失效
    制造甲基丙烯酸

    公开(公告)号：US4061673A

    公开(公告)日：1977-12-06

    申请号：US710340

    申请日：1976-07-30

    申请人： Takeru Onoda ,  Masayuki Otake

    发明人： Takeru Onoda ,  Masayuki Otake

    IPC分类号： C07C51/377 ,  C07C51/24

    CPC分类号： C07C51/377

    摘要： Methacrylic acid is manufactured by oxidative dehydrogenation of isobutyric acid in vapor phase in the presence of a supported catalyst containing a heteropolyacid and/or a reduced form of the heteropolyacid. A highly siliceous material having a high water absorbability is used as a carrier for the catalyst to improve the conversion rate and selectivity as well as the catalyst durability.

    摘要翻译： 在含有杂多酸和/或还原形式的杂多酸的负载型催化剂存在下，通过异相酸在气相中氧化脱氢制备甲基丙烯酸。 使用具有高吸水性的高硅质材料作为催化剂的载体，以提高转化率和选择性以及催化剂耐久性。

    Preparation of methacrylates
    6.
    发明授权
    Preparation of methacrylates 失效
    甲基丙烯酸酯的制备

    公开(公告)号：US4018816A

    公开(公告)日：1977-04-19

    申请号：US641824

    申请日：1975-12-17

    申请人： Takeru Onoda ,  Masayuki Otake

    发明人： Takeru Onoda ,  Masayuki Otake

    IPC分类号： B01J21/06 ,  B01J37/03 ,  C07C67/08 ,  C07C69/54

    CPC分类号： B01J21/063 ,  B01J37/03 ,  C07C67/08

    摘要： A methacrylate is prepared by reacting methacrylic acid and an alcohol in vapor phase in the presence of a catalyst. The catalyst is a solid acid catalyst of silica-titania obtained by coprecipitating the same from an aqueous solution of a silicon and a titanium compound.

    摘要翻译： 在催化剂存在下，通过甲基丙烯酸和醇在汽相中反应来制备甲基丙烯酸酯。 催化剂是通过从硅和钛化合物的水溶液中共沉淀得到的二氧化硅 - 二氧化钛的固体酸催化剂。

    Process for the production of dimethyl ether useful as a propellant
    7.
    发明授权
    Process for the production of dimethyl ether useful as a propellant 失效
    生产可用作推进剂的二甲醚的方法

    公开(公告)号：US4560807A

    公开(公告)日：1985-12-24

    申请号：US604943

    申请日：1984-04-27

    申请人： Nobuyuki Murai ,  Kazuya Nakamichi ,  Masayuki Otake ,  Takashi Ushikubo

    发明人： Nobuyuki Murai ,  Kazuya Nakamichi ,  Masayuki Otake ,  Takashi Ushikubo

    IPC分类号： C07C43/04 ,  B01J21/00 ,  C07B61/00 ,  C07C41/00 ,  C07C41/09 ,  C07C41/42 ,  C07C67/00 ,  C09K3/30

    CPC分类号： C07C41/42 ,  C07C41/09 ,  C09K3/30 ,  Y02P20/582 ,  Y10S203/20

    摘要： A process for producing dimethyl ether useful as a propellant by dehydrating methanol and recovering dimethyl ether from the dehydrated product by distillation, which comprises(A) a reaction step wherein the dehydration reaction of methanol is conducted in a vapor phase under pressure of from 2 to 50 kg/cm.sup.2 G in the presence of a solid acid catalyst,(B) a first distillation step wherein the reaction mixture formed by the above reaction step is cooled and introduced into a pressurized distillation column under pressure of at least 5 kg/cm.sup.2 G; refined dimethyl ether is obtained as a side stream; substance having a boiling point lower than that of dimethyl ether is distilled from the top; and the bottom is withdrawn, and(C) a second distillation step wherein said bottom is introduced into a second distillation column under pressure lower than the pressure of the pressurized distillation column; unreacted methanol is recovered as a side stream from the second distillation column; substance having a boiling point lower than that of methanol is distilled from the top; and the bottom is withdrawn, whereby(D) the unreacted methanol recovered from the second distillation step is recycled to the reaction step.

    摘要翻译： 一种通过蒸馏除去甲醇和从脱水产物中回收二甲醚用作推进剂的二甲醚的方法，其包括（A）反应步骤，其中甲醇的脱水反应在压力为2〜 50kg / cm2G，（B）第一蒸馏步骤，其中由上述反应步骤形成的反应混合物冷却并在至少5kg / cm2G的压力下引入加压蒸馏塔; 得到精制二甲醚作为副产物; 沸点低于二甲醚的物质从顶部蒸馏出来; 和（C）第二蒸馏步骤，其中所述底部在低于加压蒸馏塔的压力的压力下引入第二蒸馏塔; 作为来自第二蒸馏塔的副产物流回收未反应的甲醇; 沸点低于甲醇的物质从顶部蒸馏出来; 并且将塔底取出，由此（D）将从第二蒸馏步骤回收的未反应甲醇再循环至反应步骤。

    Process for producing a lactone
    10.
    发明授权
    Process for producing a lactone 失效
    制备内酯的方法

    公开(公告)号：US5047561A

    公开(公告)日：1991-09-10

    申请号：US582158

    申请日：1990-09-14

    申请人： Chihiro Miyazawa ,  Kazunari Takahashi ,  Hiroshi Kameo ,  Shinji Isogai ,  Masayuki Otake

    发明人： Chihiro Miyazawa ,  Kazunari Takahashi ,  Hiroshi Kameo ,  Shinji Isogai ,  Masayuki Otake

    IPC分类号： C07D315/00

    CPC分类号： C07D315/00

    摘要： A process for producing a lactone by reacting in a hydrogenation reaction zone a dicarboxylic acid, a dicarboxylic acid anhydride and/or a dicarboxylic acid ester with hydrogen in a liquid phase using a solvent in the presence of a catalyst comprising ruthenium and an organic phosphine, which process comprises the following steps (1) to (6):(1) a first step of recovering the liquid phase from the hydrogenation reaction zone,(2) a second step of distilling the liquid phase in a first distillation column to obtain a first distillate and a first residue,(3) a third step of recycling the first residue to the hydrogenation reaction zone,(4) a fourth step of distilling a part of the first residue in a second distillation column to obtain a second distillate and a second residue,(5) a fifth step of recycling the second distillate to the hydrogenation reaction zone or the first distillation column, and(6) a sixth step of recovering a lactone from the first distillate.