利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

20 条记录 (耗时 0.046 秒)

    Process for the production of tertiary olefin
    4.
    发明授权
    Process for the production of tertiary olefin 失效
    生产叔烯烃的方法

    公开(公告)号：US4536605A

    公开(公告)日：1985-08-20

    申请号：US371424

    申请日：1982-04-23

    申请人： Koichi Kida ,  Yoshio Kawai ,  Yutaka Tamura ,  Yoshiharu Suzuki

    发明人： Koichi Kida ,  Yoshio Kawai ,  Yutaka Tamura ,  Yoshiharu Suzuki

    IPC分类号： B01J21/12 ,  C07C1/20 ,  C07C1/00

    CPC分类号： B01J21/12 ,  C07C1/20 ,  C07C2521/12

    摘要： A tertiary olefin is produced by contacting a gaseous tertiary ether usually represented by the following general formula: ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 are alkyl groups each having 1-4 carbon atoms which may be same or different and R.sup.4 is an alkyl group having 1-3 carbon atoms, with a catalyst obtained by calcining a silica-alumina compound at 700.degree.-1100.degree. C. in order to effect cracking of the tertiary ether. This reaction may be carried out in the presence of steam to result in further improvements.

    摘要翻译： 通过与通常由以下通式表示的气态叔醚接触来制备叔烯烃：其中R 1，R 2和R 3是可以相同或不同的1-4个碳原子的烷基，R 4是烷基 具有1-3个碳原子，与通过在700℃-1100℃煅烧二氧化硅 - 氧化铝化合物而获得的催化剂以实现叔乙醚的裂化。 该反应可以在蒸汽存在下进行，以进一步改进。

    Process for producing methyl methacrylate
    6.
    发明授权
    Process for producing methyl methacrylate 失效
    生产甲基丙烯酸甲酯的方法

    公开(公告)号：US5087736A

    公开(公告)日：1992-02-11

    申请号：US530089

    申请日：1990-05-29

    申请人： Hirofumi Higuchi ,  Koichi Kida

    发明人： Hirofumi Higuchi ,  Koichi Kida

    IPC分类号： C07C67/317 ,  C07C67/20 ,  C07C67/327 ,  C07C69/54

    CPC分类号： C07C67/20 ,  C07C67/327

    摘要： Disclosed is a process for producing methyl methacrylate which comprises:(I) a step of reacting acetone and prussic acid to form acetonecyanhydrin;(II) a step of hydrating the acetonecyanhydrin obtained in the step (I) to form .alpha.-hydroxyisobutyric acid amide;(III) a step of reacting the .alpha.-hydroxyisobutyric acid amide obtained in the step (II) which methyl formate to form methyl .alpha.-hydroxyisobutyrate and formamide;(IV) a step of dehydrating the methyl .alpha.-hydroxyisobutyrate obtained in the step (III) to form methyl methancrylate; and(V) a step of decomposing the formamide obtained in the step (IV) into ammonia and carbon monoxide.The process can produce methyl methacrylate at high yields without by-production of acidic ammonium sulfate.

    Method for preparing alkylbenzoic acid
    7.
    发明授权
    Method for preparing alkylbenzoic acid 失效
    制备烷基苯甲酸的方法

    公开(公告)号：US5731466A

    公开(公告)日：1998-03-24

    申请号：US732606

    申请日：1996-10-16

    申请人： Koichi Kida

    发明人： Koichi Kida

    IPC分类号： C07C51/265 ,  C07C51/44 ,  C07C51/16

    CPC分类号： C07C51/265 ,  C07C51/44

    摘要： A method for preparing an alkylbenzoic acid is herein disclosed which comprises subjecting an alkylbenzene having at least two alkyl groups of 1 to 3 carbon atoms to a liquid phase oxidative reaction with a molecular oxygen-containing gas in the presence of a soluble heavy metal catalyst to convert one alkyl group into a carboxylic acid, thereby preparing the alkylbenzoic acid, and impurities contained in the alkylbenzene recovered from the reaction solution are removed therefrom by distillation, water washing, alkali washing, a treatment with an anion exchange resin or a treatment with a solid adsorbent, and the impurities-free fraction is reused as a raw material. Furthermore, the conversion of the desired product is regulated to 25% or less in the liquid phase oxidative reaction, whereby the reaction is carried out in a boiling heat removal state and reaction heat is removed as the heat of vaporization. Thus, there can be decreased a dicarboxylic acid secondarily produced during the manufacture of the alkyl-benzoic acid which is a monocarboxylic acid by subjecting the alkylbenzene to the liquid phase oxidation, whereby problems such as the trouble of equipment operation and the deterioration of product quality can be solved.

    摘要翻译： 本文公开了一种制备烷基苯甲酸的方法，其包括在可溶性重金属催化剂存在下使具有至少两个具有1至3个碳原子的烷基的烷基苯与含分子氧的气体进行液相氧化反应， 将一个烷基转化成羧酸，从而制备烷基苯甲酸，通过蒸馏，水洗，碱洗，阴离子交换树脂处理或用阴离子交换树脂处理从反应溶液中回收的烷基苯中所含的杂质被除去 固体吸附剂，无杂质馏分作为原料重复使用。 此外，在液相氧化反应中，所需产物的转化率调节至25％以下，由此在沸腾除热状态下进行反应，作为蒸发热除去反应热。 因此，通过使烷基苯进行液相氧化，可以减少在制备作为单羧酸的烷基 - 苯甲酸时二次生成的二羧酸，从而存在设备操作困难和产品质量恶化等问题 可以解决

    Integrated method for producing methyl methacrylate and hydrogen cyanide
    8.
    发明授权
    Integrated method for producing methyl methacrylate and hydrogen cyanide 有权
    生产甲基丙烯酸甲酯和氰化氢的综合方法

    公开(公告)号：US6075162A

    公开(公告)日：2000-06-13

    申请号：US260000

    申请日：1999-03-02

    申请人： Koichi Kida

    发明人： Koichi Kida

    IPC分类号： C07C69/54 ,  C01C3/02 ,  C07C67/20 ,  C07C67/327 ,  C07C69/675 ,  C07C231/06 ,  C07C235/06 ,  C07C253/00 ,  C07C255/12 ,  C07C67/30

    CPC分类号： C07C253/00 ,  C01C3/0241 ,  C07C231/06 ,  C07C67/20 ,  C07C67/327

    摘要： A method of producing methyl methacrylate comprises Step 1 of producing acetone cyanhydrin from hydrogen cyanide and acetone; Step 2 of producing .alpha.-hydroxyisobutyramide by hydrating acetone cyanhydrin; Step 3 of producing methyl .alpha.-hydroxyisobutyrate and ammonia by a reaction of .alpha.-hydroxyisobutyramide and methanol; Step 4 of producing methyl methacrylate by dehydrating methyl .alpha.-hydroxyisobutyrate; and Step 5 of producing hydrogen cyanide in vapor phase by reacting methanol and the ammonia obtained in Step 3 over a solid catalyst in the presence of molecular oxygen. By using methanol in the step 3, the conversion ratio of .alpha.-hydroxyisobutyramide into methyl .alpha.-hydroxyisobutyrate can be increased because the equilibrium of the reaction is easily sifted toward the product side by removing ammonia being produced from the reaction system. The use of methanol in the step 3 produces additional advantages of efficiently linking the steps to eliminate the steps for separation and purification, thereby reducing the production cost.Step 1:HCN+CH.sub.3 COCH.sub.3 .fwdarw.(CH.sub.3).sub.2 (OH)CN;Step 2:(CH.sub.3).sub.2 C(OH)CN+H.sub.2 O.fwdarw.(CH.sub.3).sub.2 (OH)CONH.sub.2Step 3:(CH.sub.3).sub.2 C(OH)CONH.sub.2 +CH.sub.3 OH.fwdarw.(CH.sub.3).sub.2 (OH)CO.sub.2 CH.sub.3 +NH.sub.3Step 4:(CH.sub.3).sub.2 C(OH)CO.sub.2 CH.sub.3 .fwdarw.(CH.sub.2).sub.2 .dbd.C(CH.sub.3)CO.sub.2 CH.sub.3 +H.sub.2 OStep 5:CH.sub.3 OH+NH.sub.3 +O.sub.2 .fwdarw.HCN+3H.sub.2 O

    摘要翻译： 制备甲基丙烯酸甲酯的方法包括从氰化氢和丙酮生产丙酮氰醇的步骤1; 通过水化丙酮氰醇生产α-羟基异丁酰胺的步骤2; 通过α-羟基异丁酰胺和甲醇的反应制备α-羟基异丁酸甲酯和氨的步骤3; 通过使α-羟基异丁酸甲酯脱水生产甲基丙烯酸甲酯的步骤4; 和在步骤3中通过甲醇和在步骤3中获得的氨在分子氧存在下在固体催化剂上反应生成氰化氢的步骤5。 通过在步骤3中使用甲醇，可以增加α-羟基异丁酰胺与α-羟基异丁酸甲酯的转化率，因为通过除去由反应体系产生的氨，反应的平衡容易地向产物侧筛分。 在步骤3中使用甲醇产生了有效连接步骤以消除分离和纯化步骤的另外的优点，从而降低生产成本。 步骤1：HCN + CH 3 COCH 3→（CH 3）2（OH）CN; 步骤2：（CH 3）2 C（OH）CN + H 2 O→CH 3）2（OH）CONH 2步骤3：（CH3）2C（OH）CONH2 + CH3OH→（CH3） ：（CH 3）2 C（OH）CO 2 CH 3 - >（CH 2）2 = C（CH 3）CO 2 CH 3 + H 2 O步骤5：CH 3 OH + NH 3 + O 2→HCN +

    Process for producing 4-formyl-4'-methylbiphenyl from biphenyl
    9.
    发明授权
    Process for producing 4-formyl-4'-methylbiphenyl from biphenyl 失效
    从联苯生产4-甲酰基-4'-甲基联苯的方法

    公开(公告)号：US5436374A

    公开(公告)日：1995-07-25

    申请号：US281126

    申请日：1994-07-28

    申请人： Makoto Komatsu ,  Susumu Fujiyama ,  Koichi Kida ,  Mitsuharu Kitamura

    发明人： Makoto Komatsu ,  Susumu Fujiyama ,  Koichi Kida ,  Mitsuharu Kitamura

    IPC分类号： B01J27/12 ,  C07B61/00 ,  C07C45/49 ,  C07C47/546

    CPC分类号： C07C45/49

    摘要： A process for producing a 4-formyl-4'-methylbiphenyl from a biphenyl which comprises conducting the carbonylation of the biphenyl with carbon monoxide in the presence of a HF-BF.sub.3 catalyst in a carbonylation reactor to obtain the resulting reaction product solution containing a 4-formylbiphenyl, separating the 4-formylbiphenyl from the reaction product solution, hydrogenating the separated 4-formylbiphenyl to obtain a 4-methylbiphenyl, recycling the 4-methylbiphenyl to the carbonylation reactor, and then conducting both the carbonylation of the biphenyl with carbon monoxide to obtain a formylbiphenyl and the carbonylation of the 4-methylbiphenyl with carbon monoxide to obtain a 4-formyl-4'-methylbiphenyl simultaneously in the presence of the HF-BF.sub.3 catalyst in the carbonylation reactor.

    摘要翻译： 一种由联苯生产4-甲酰基-4'-甲基联苯的方法，其包括在羰基化反应器中，在HF-BF 3催化剂存在下，用一氧化碳进行联苯的羰基化，得到所得到的含有4 - 甲酰基联苯，从反应产物溶液中分离4-甲酰基联苯，氢化分离的4-甲酰基联苯，得到4-甲基联苯，将4-甲基联苯循环到羰基化反应器中，然后进行联苯与一氧化碳的羰基化反应 在羰基化反应器中，在HF-BF 3催化剂的存在下，用一氧化碳得到甲酰基联苯和4-甲基联苯羰基化，得到4-甲酰基-4'-甲基联苯。