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671 条记录 (耗时 0.023 秒)

    Process for the preparation of methyl tertiary butyl ether
    81.
    发明授权
    Process for the preparation of methyl tertiary butyl ether 失效
    制备甲基叔丁基醚的方法

    公开(公告)号：US4554386A

    公开(公告)日：1985-11-19

    申请号：US595165

    申请日：1984-03-30

    申请人： Christiaan Groeneveld ,  Dirk Knol ,  Johannes D. M. Verstegen ,  Jacobus Jansen

    发明人： Christiaan Groeneveld ,  Dirk Knol ,  Johannes D. M. Verstegen ,  Jacobus Jansen

    IPC分类号： C07C41/06

    CPC分类号： C07C41/06

    摘要： A process for the preparation of methyl tertiary butyl ether (MTBE) in two stages:the first stage comprising the reaction of isobutene with methanol in the presence of an acid catalyst, yielding MTBE, while the second stage comprises firstly the conversion of normal-butenes present in the hydrocarbon flow, which remains behind after separation of the MTBE formed in the first stage into isobutene and secondly passing the mixture thus obtained to a reaction zone to form MTBE.Optionally an extra amount of methanol can be supplied to said reaction zone. Said reaction zone can be the same as that used in the same first stage or another one.

    摘要翻译： 制备甲基叔丁基醚（MTBE）的两个阶段的方法：第一阶段包括在酸催化剂存在下异丁烯与甲醇的反应，产生MTBE，而第二阶段首先包括正丁烯转化 存在于在第一阶段中形成的MTBE分离成异丁烯之后留下的烃流，其次将由此获得的混合物通过反应区形成MTBE。 任选地，可向该反应区提供额外量的甲醇。 所述反应区可以与在相同的第一阶段或另一阶段中使用的相同。

    Process for the preparation of pharmaceutical benzoic acid
    82.
    发明授权
    Process for the preparation of pharmaceutical benzoic acid 失效
    制备药用苯甲酸的方法

    公开(公告)号：US4547587A

    公开(公告)日：1985-10-15

    申请号：US564199

    申请日：1983-12-22

    申请人： Ludovicus A. L. Kleintjens ,  Hubertus M. J. Grooten

    发明人： Ludovicus A. L. Kleintjens ,  Hubertus M. J. Grooten

    IPC分类号： C07C63/06 ,  C07C51/00 ,  C07C51/42 ,  C07C51/487 ,  C07C67/00

    CPC分类号： C07C51/42 ,  C07C51/487

    摘要： Pharmaceutical benzoic acid is prepared from raw benzoic acid made of oxidation of toluene with an oxygen containing gas, the process is characterized in that the oxidation reaction product is contacted with at least 1 m.sup.3 per kg of benzoic acid of a gas with a critical temperature lower than 435 K by passing this gas through the oxidation reaction product at a flow rate of at least 1 m.sup.3 per hour per kg of benzoic acid at a temperature of 340-600 K. and a pressure of at least 3 MPa. The pharmaceutical benzoic acid is separated from the mixture by cooling it to 315-370 K. at a pressure of 3-300 MPa.

    摘要翻译： 药用苯甲酸由含氧气体的甲苯氧化制成的苯甲酸苯甲酸制备，其特征在于氧化反应产物与至少1m 3 / kg苯甲酸接触，临界温度较低 通过使该气体以340-600K的温度和至少3MPa的压力以每kg苯甲酸至少1m 3 /小时的流速通过氧化反应产物而达到435K。 将药物苯甲酸通过在3-300MPa的压力下冷却至315-370K而与混合物分离。

    Polymerization catalyst for the preparation of ethylene polymer
    83.
    发明授权
    Polymerization catalyst for the preparation of ethylene polymer 失效
    用于制备乙烯聚合物的聚合催化剂

    公开(公告)号：US4504592A

    公开(公告)日：1985-03-12

    申请号：US560513

    申请日：1983-12-13

    申请人： Lambertus J. M. A. van de Leemput ,  Godefridus A. H. Nooijen ,  Hendrikus W. van der Loo

    发明人： Lambertus J. M. A. van de Leemput ,  Godefridus A. H. Nooijen ,  Hendrikus W. van der Loo

    IPC分类号： C08F4/00 ,  C08F4/60 ,  C08F4/62 ,  C08F4/639 ,  C08F4/69 ,  C08F10/00 ,  C08F10/02 ,  B01J23/22 ,  B01J23/26

    CPC分类号： C08F10/00 ,  C08F10/02

    摘要： An improved process for the preparation of a catalyst for the polymerization of ethylene, and an improved process for preparing an ethylene polymer therewith. An improved supported chromium-containing catalyst is prepared by reacting (1) a chromium chelate of a 1,3-diketo compound and (2) a vanadium chelate or a vanadyl chelate of a 1,3-diketo compound, separately or jointly with (3) an organometallic compound of an element from Group II or III of the periodic system, jointly contacting the resulting reaction products of (1) and (2) with (3) with an inert inorganic supporting material so as to deposit such reaction products thereon, whereafter the supporting material containing the reaction products is heated in a non-reducing atmosphere at a temperature of between 200.degree. and 1200.degree. C. The 1,3-diketo compounds of (1) and (2) are the same or different, and have the formula ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are the same or different, R.sub.1 and R.sub.3 being an alkyl group of 1-10 carbon atoms, and R.sub.2 being selected from the group consisting of an alkyl group with 1-10 carbon atoms, and a hydrogen atom. The catalyst so prepared can be used either alone, or together with an organo-metallic compound of an element of Group II or III of the periodic system, in the polymerization of polyethylene or in the copolymerization of polyethylene with up to 15 mole percent of one or more .alpha.-alkenes having 3 to 15 carbon atoms.

    Preparation of high molecular polytetramethylene adipamide
    85.
    发明授权
    Preparation of high molecular polytetramethylene adipamide 失效
    高分子聚四亚甲基己二酰胺的制备

    公开(公告)号：US4460762A

    公开(公告)日：1984-07-17

    申请号：US247545

    申请日：1981-03-25

    申请人： Reinoud J. Gaymans ,  Edmond H. J. P. Bour

    发明人： Reinoud J. Gaymans ,  Edmond H. J. P. Bour

    IPC分类号： C08G69/00 ,  C08G69/28

    CPC分类号： C08G69/28

    摘要： A process is described for the preparation of high-molecular weight white polyamides, substantially consisting of units of --NH--(CH.sub.2).sub.4 --NH--CO(CH.sub.2).sub.4 --CO--, by the after-condensation of a corresponding low-molecular prepolymer, consisting substantially of a molecular chain of units of --NH--(CH.sub.2).sub.4 --NH--CO(CH.sub.2).sub.4 --CO--, in which process the prepolymer which is employed has been prepared in the presence of an excess of 0.5 to 15 moles-% of 1,4-diaminobutane with respect to the quantity stoichiometrically equivalent to the adipic acid applied. This prepolymer is thereafter subjected to the after-condensation reaction in the solid phase in an atmosphere containing water vapor.

    摘要翻译： 描述了制备基本上由-NH-（CH 2）4 -NH-CO（CH 2）4 -CO-的单元组成的高分子量白色聚酰胺的方法，通过相应的低分子量 预聚物，其基本上由-NH-（CH 2）4 -NH-CO（CH 2）4 -CO-单元的分子链组成，其中所用的预聚物在过量的0.5至 15摩尔％的1,4-二氨基丁烷相对于所施加的己二酸的化学计量等效量。 此后，该预聚物在含有水蒸汽的气氛中在固相中进行后缩合反应。

    Process for preparing a polymerization catalyst and preparation of ethylene polymers with this catalyst
    86.
    发明授权
    Process for preparing a polymerization catalyst and preparation of ethylene polymers with this catalyst 失效
    制备聚合催化剂的方法和使用该催化剂制备乙烯聚合物

    公开(公告)号：US4458028A

    公开(公告)日：1984-07-03

    申请号：US405373

    申请日：1982-08-05

    申请人： Lambertus J. M. A. van de Leemput ,  Godefridus A. H. Nooijen

    发明人： Lambertus J. M. A. van de Leemput ,  Godefridus A. H. Nooijen

    IPC分类号： C08F4/00 ,  C08F4/02 ,  C08F4/24 ,  C08F4/60 ,  C08F4/69 ,  C08F10/00 ,  C08F10/10 ,  C08F4/68

    CPC分类号： C08F10/00 ,  C08F10/10 ,  C08F110/02 ,  C08F2410/04

    摘要： This invention relates to a process for forming a catalyst containing chromium and vanadium, by depositing chromium- and vanadium compounds on an inert, particulate inorganic support. The chromium is deposited as a complex of a chromium compound that may be a chromium-1,3-diketocompound with a Group II or III element hydrocarbyl. The vanadium compound can be but need not be a complex of a vanadium compound with a Group II or III element. Not more than one of the chromium- and a vanadium compounds may be the chelate of a 1.3-diketo-compound, whether or not complexed with a Group II or III element hydrocarbyl. The process for polymerizing an olefin using the catalysts of the invention is also disclosed.

    摘要翻译： 本发明涉及通过在惰性颗粒状无机载体上沉积铬和钒化合物来形成含有铬和钒的催化剂的方法。 铬作为铬化合物的复合物沉积，所述铬化合物可以是具有二价或三价元素烃基的1,3-二酮化合物。 钒化合物可以是但不一定是钒化合物与II或III族元素的络合物。 铬化合物和钒化合物中不超过一种可能是1,3-二酮化合物的螯合物，无论是否与II或III族元素烃基络合。 还公开了使用本发明的催化剂聚合烯烃的方法。