Process for continuous production of acetylenediol
    1.
    发明授权
    Process for continuous production of acetylenediol 失效
    连续生产乙炔二醇的方法

    公开(公告)号:US06506946B1

    公开(公告)日:2003-01-14

    申请号:US10171176

    申请日:2002-06-12

    IPC分类号: C07C3334

    摘要: The present invention provides a process for producing an acetylenediol continuously by reacting a ketone with acetylene in the presence of an alkali catalyst, which process comprises continuously feeding, into a first-stage reactor, a reaction solvent, an alkali catalyst, a ketone and acetylene to give rise to a reaction, continuously introducing the reaction mixture into a second-stage reactor, and continuously feeding a fresh portion of the same ketone into the second-stage reactor to give rise to a reaction.

    摘要翻译: 本发明提供了一种在碱催化剂存在下使酮与乙炔反应而连续生产乙炔二醇的方法,该方法包括连续进料到第一级反应器中的反应溶剂,碱催化剂,酮和乙炔 引起反应,将反应混合物连续地引入第二级反应器中,并将新鲜部分的相同的酮连续地进料到第二级反应器中以引起反应。

    Catalyst composition for disproportionation of olefins and process for
disproportionation of olefins using the same
    2.
    发明授权
    Catalyst composition for disproportionation of olefins and process for disproportionation of olefins using the same 失效
    用于歧化烯烃的催化剂组合物和使用其的烯烃歧化方法

    公开(公告)号:US5304692A

    公开(公告)日:1994-04-19

    申请号:US960970

    申请日:1992-10-14

    摘要: A disproportionation catalyst for olefins and a process for disproportionation of olefins using said catalyst are disclosed. The catalyst is a mixture of one part by weight of a first catalyst component comprising silica gel carrying thereon a tungsten oxide or its precursor and a Group I metal oxide or a compound convertible to Group I metal oxide; and 8-75 parts by weight of a second catalyst component which is alumina having a specific surface area of 20-120 m.sup.2 /g, and preferably carrying thereon a Group I or Group III metal oxide or a compound convertible to such an oxide. It exhibits a remarkably extended life of disporportionation activity and is thus applicable to the industrial use. The catalyst, therefore, can produce industrially useful compounds at a low cost by the application of the olefin disproportionation.

    摘要翻译: 公开了一种用于烯烃的歧化催化剂和使用所述催化剂歧化烯烃的方法。 该催化剂是一份重量的第一催化剂组分的混合物,该第一催化剂组分包含载有氧化钨或其前体的硅胶和第I族金属氧化物或可转化为第I族金属氧化物的化合物; 和8-75重量份的第二催化剂组分,其是比表面积为20-120m 2 / g的氧化铝,并且优选带有第I族或第III族金属氧化物或可转化为这种氧化物的化合物。 它展现了分散活动的显着延长的寿命,因此适用于工业用途。 因此,通过施加烯烃歧化,催化剂可以以低成本生产工业上有用的化合物。

    ABA TRIBLOCK COPOLYMER AND PROCESS FOR PRODUCING THE SAME
    3.
    发明申请
    ABA TRIBLOCK COPOLYMER AND PROCESS FOR PRODUCING THE SAME 有权
    ABA三嵌段共聚物及其制备方法

    公开(公告)号:US20100286351A1

    公开(公告)日:2010-11-11

    申请号:US12667785

    申请日:2008-06-19

    IPC分类号: C08F4/32 C08F12/24

    摘要: To provide a novel ABA-type triblock copolymer of vinyl ether series, comprising polyvinyl ether and an oxystyrene-series unit, and a process of producing the ABA-type copolymer at a series of steps. The invention relates to a novel ABA-type triblock copolymer comprising Segment A comprising an oxystyrene-series repeat unit (a) and Segment B comprising a vinyl ether-series repeat unit (b), in which the Segment A and the Segment B are bonded together with a single bond, and to a simple process of producing the same. The triblock copolymer can be produced at a series of steps in a simple manner, comprising living cationic polymerization of a vinyl ether-series monomer such as ethyl vinyl ether in the presence of a bifunctional initiator and a Lewis acid, and subsequently adding an oxystyrene-series monomer such as p-hydroxystyrene for living cationic polymerization.

    摘要翻译: 提供一种乙烯基醚系列的新型ABA型三嵌段共聚物,包括聚乙烯基醚和氧苯乙烯系单体,以及一系列步骤制备该ABA型共聚物的方法。 本发明涉及一种新型的ABA型三嵌段共聚物,其包括含有氧化苯乙烯系列重复单元(a)的段A和包含乙烯基醚系列重复单元(b)的段B,其中段A和段B键合 连同一个单一的债券,以及一个简单的生产过程。 三嵌段共聚物可以以简单的方式在一系列步骤中制备,包括在双功能引发剂和路易斯酸的存在下乙烯基醚系单体如乙基乙烯基醚的阳离子聚合,随后加入氧苯乙烯 - 用于活性阳离子聚合的对羟基苯乙烯等系列单体。

    ABA triblock copolymer and process for producing the same
    4.
    发明授权
    ABA triblock copolymer and process for producing the same 有权
    ABA三嵌段共聚物及其制备方法

    公开(公告)号:US08492483B2

    公开(公告)日:2013-07-23

    申请号:US12667785

    申请日:2008-06-19

    IPC分类号: C08F4/32 C08F12/24

    摘要: To provide a novel ABA-type triblock copolymer of vinyl ether series, comprising polyvinyl ether and an oxystyrene-series unit, and a process of producing the ABA-type copolymer at a series of steps. The invention relates to a novel ABA-type triblock copolymer comprising Segment A comprising an oxystyrene-series repeat unit (a) and Segment B comprising a vinyl ether-series repeat unit (b), in which the Segment A and the Segment B are bonded together with a single bond, and to a simple process of producing the same. The triblock copolymer can be produced at a series of steps in a simple manner, comprising living cationic polymerization of a vinyl ether-series monomer such as ethyl vinyl ether in the presence of a bifunctional initiator and a Lewis acid, and subsequently adding an oxystyrene-series monomer such as p-hydroxystyrene for living cationic polymerization.

    摘要翻译: 提供一种乙烯基醚系列的新型ABA型三嵌段共聚物,包括聚乙烯基醚和氧苯乙烯系单体,以及一系列步骤制备该ABA型共聚物的方法。 本发明涉及一种新型的ABA型三嵌段共聚物,其包括含有氧化苯乙烯系列重复单元(a)的段A和包含乙烯基醚系列重复单元(b)的段B,其中段A和段B键合 连同一个单一的债券,以及一个简单的生产过程。 三嵌段共聚物可以以简单的方式在一系列步骤中制备,包括在双功能引发剂和路易斯酸的存在下乙烯基醚系单体如乙基乙烯基醚的阳离子聚合,随后加入氧苯乙烯 - 用于活性阳离子聚合的对羟基苯乙烯等系列单体。