Catalyst composition for polymerizing alpha-olefins at low reactants
partial pressures
    1.
    发明授权
    Catalyst composition for polymerizing alpha-olefins at low reactants partial pressures 失效
    用于在低反应物分压下聚合α-烯烃的催化剂组合物

    公开(公告)号:US4675369A

    公开(公告)日:1987-06-23

    申请号:US784012

    申请日:1985-10-04

    IPC分类号: C08F4/44 C08F10/00

    CPC分类号: C08F10/00 C08F210/16

    摘要: A catalyst composition for polymerizing alpha-olefins in a gas phase continuous process is prepared by combining a catalyst precursor with a catalyst activator in such proportions that the polymer product comprises about 9.times.10.sup.-7 to about 18.times.10.sup.-7 gram-moles of the activator per gram of the polymer produced. The use of the activator in these proportions lowers the partial pressure of the monomers used in the process without sacrificing quality of the product. The catalyst precursor is prepared by reacting a carrier having OH groups with a stoichiometric excess, with respect to the OH groups, of an organomagnesium composition, and subsequently reacting the product with a transition metal compound.

    摘要翻译: 在气相连续方法中用于聚合α-烯烃的催化剂组合物通过将催化剂前体与催化剂活化剂组合的比例来制备,使得聚合物产物包含约9×10-7至约18×10-7克摩尔的活化剂/克 的聚合物。 以这些比例使用活化剂降低了该方法中使用的单体的分压,而不牺牲产品的质量。 通过使具有OH基团的载体与化学计量过量相对于OH基团的有机镁组合物反应,随后使产物与过渡金属化合物反应来制备催化剂前体。

    Substituted phthalide derivatives
    3.
    发明授权
    Substituted phthalide derivatives 失效
    取代的苯酞衍生物

    公开(公告)号:US4188330A

    公开(公告)日:1980-02-12

    申请号:US949479

    申请日:1978-10-10

    IPC分类号: C07D307/88

    CPC分类号: C07D307/88

    摘要: Method of preparing chlorthalidone, an antihypertensive agent, and derivatives using a novel 3-(4'-chloro-3'-chlorosulfonylphenyl)phthalide intermediate and derivatives, and method of preparing said novel intermediate, are disclosed.

    摘要翻译: 公开了使用新型3-(4'-氯-3'-氯磺酰基苯基)苯并菲酮中间体及其衍生物制备氯噻酮,抗高血压药和衍生物的方法,以及制备所述新型中间体的方法。

    Process for making tertiary-thiols
    4.
    发明授权
    Process for making tertiary-thiols 失效
    制备叔硫醇的方法

    公开(公告)号:US5453544A

    公开(公告)日:1995-09-26

    申请号:US254624

    申请日:1994-06-06

    IPC分类号: C07C319/04 C07C321/04

    CPC分类号: C07C319/04

    摘要: A process for making t-butylthiol by reacting hydrogen sulfide and an olefin having a carbon number of 3 to 15 in the presence of a HZSM-5, HZSM-12, or MCM-22 zeolite catalyst. The reaction takes place under autogenous pressure conditions and a temperature of about 70.degree. C. to about 160.degree. C.

    摘要翻译: 在HZSM-5,HZSM-12或MCM-22沸石催化剂存在下,使硫化氢与碳原子数为3〜15的烯烃反应制备叔丁硫醇的方法。 反应发生在自生压力条件下,温度约70℃至约160℃。

    Process for production of biodegradable esters
    6.
    发明授权
    Process for production of biodegradable esters 失效
    生物降解酯生产工艺

    公开(公告)号:US5245072A

    公开(公告)日:1993-09-14

    申请号:US840214

    申请日:1992-02-24

    摘要: This invention relates to processes for making biodegradable surfactant. The process comprises several steps including an optional step. The first step is directed to reacting olefins with ZSM-23 catalyst to form oligomers having the formula -(C.sub.3).sub.x, (C.sub.4).sub.x or mixtures thereof. Second, the oligomer is hydroformylated to form a saturated alcohol, for example, tridecanol. Next, the saturated alcohol is ethoxylated. Thereafter a nonionic biodegradable surfactant is recovered. This surfactant can be used in detergent formulations. A process is also taught for making esters which can be used as lubricants or plasticizers. A specific hydroformylation process is taught which utilizes modified cobalt carbonyl catalyst. Also, a specific ethoxylation process is taught. Products formed according to the latter two processes as well as their uses are also taught.

    摘要翻译: 本发明涉及制造可生物降解的表面活性剂的方法。 该过程包括几个步骤,包括可选步骤。 第一步是使烯烃与ZSM-23催化剂反应形成具有式 - (C3)x,(C4)x或其混合物的低聚物。 其次,将低聚物加氢甲酰化以形成饱和醇,例如十三烷醇。 接下来,饱和醇被乙氧基化。 此后回收非离子的可生物降解的表面活性剂。 该表面活性剂可用于洗涤剂配方中。 还教导了一种制备可用作润滑剂或增塑剂的酯的方法。 教导了一种使用改性羰基钴催化剂的特定加氢甲酰化方法。 此外,教导了具体的乙氧基化方法。 还教授了根据后两个过程形成的产品及其用途。

    Process for making 2,6-difluoropyridine
    9.
    发明授权
    Process for making 2,6-difluoropyridine 失效
    制备2,6-二氟吡啶的方法

    公开(公告)号:US4031100A

    公开(公告)日:1977-06-21

    申请号:US716863

    申请日:1976-08-23

    IPC分类号: C07D213/61 C07D213/81

    CPC分类号: C07D213/61

    摘要: It has been found that practical reaction rates can be attained without resort to the high temperatures previously employed in the preparation of 2,6-difluoropyridine from the corresponding dichloropyridine and KF, if:A. dimethyl sulfoxide is employed as the reaction medium;B. the reaction mixture contains solid KF particles and dissolved tetramethyl ammonium or phosphonium chloride;C. there is present in the reaction mixture less than 0.1 grams of acids, bases or organic hydroxy compounds and less than 1.0 grams of water, per 100 grams of solvent, andD. the reaction mixture is intensely stirred.

    摘要翻译: 已经发现,可以实现实际的反应速率,而不需要采用先前从相应的二氯吡啶和KF制备2,6-二氟吡啶的高温,如果: