PROCESSES FOR PURIFYING DIARYL CARBONATES
    53.
    发明申请
    PROCESSES FOR PURIFYING DIARYL CARBONATES 有权
    纯化二氧化碳的方法

    公开(公告)号:US20090137832A1

    公开(公告)日:2009-05-28

    申请号:US12274776

    申请日:2008-11-20

    IPC分类号: C07C68/06

    摘要: Processes comprising: transesterifying a dialkyl carbonate and an aromatic hydroxyl compound in the presence of a transesterification catalyst to provide a diaryl carbonate product comprising the transesterification catalyst as an impurity; subjecting the diaryl carbonate product to distillation in a first distillation column having an upper part and a lower part, wherein the upper part comprises a rectifying section and the lower part comprises a stripping section; and withdrawing a first sidestream from the first distillation column, wherein the first sidestream comprises a purified diaryl carbonate.

    摘要翻译: 方法包括:在酯交换催化剂存在下酯交换碳酸二烷基酯和芳族羟基化合物,得到包含酯交换催化剂作为杂质的碳酸二芳酯产物; 在具有上部和下部的第一蒸馏塔中对碳酸二芳基酯进行蒸馏,其中上部包括精馏段,下部包含汽提段; 以及从所述第一蒸馏塔排出第一侧流,其中所述第一侧流包含纯化的碳酸二芳基酯。

    Double-metal cyanide catalysts for producing polyether polyols
    56.
    发明授权
    Double-metal cyanide catalysts for producing polyether polyols 失效
    用于生产聚醚多元醇的双金属氰化物催化剂

    公开(公告)号:US06608231B1

    公开(公告)日:2003-08-19

    申请号:US09787130

    申请日:2001-03-13

    IPC分类号: C07C4311

    摘要: The invention relates to novel double metal cyanide (DMC) catalysts for the preparation of polyether polyols by polyaddition of alkylene oxides to starter compounds containing active hydrogen atoms, wherein the catalyst contains a) double metal cyanide compounds, b) organic complex ligands other than c), and c) carboxylic acid ester of polyhydric alcohols. The catalysts according to the invention have greatly increased activity in the preparation of polyether polyols.

    摘要翻译: 本发明涉及用于制备聚醚多元醇的新型双金属氰化物(DMC)催化剂,其通过将环氧烷加成到含有活性氢原子的起始化合物中,其中催化剂含有a)双金属氰化物化合物,b)除c以外的有机络合物配体 )和c)多元醇的羧酸酯。 根据本发明的催化剂在制备聚醚多元醇中的活性大大增加。

    Double metal cyanide catalysts for the preparation of polyether polyols
    57.
    发明授权
    Double metal cyanide catalysts for the preparation of polyether polyols 有权
    用于制备聚醚多元醇的双金属氰化物催化剂

    公开(公告)号:US06468939B1

    公开(公告)日:2002-10-22

    申请号:US09525882

    申请日:2000-03-15

    IPC分类号: B01J2726

    摘要: This invention relates to new double metal cyanide (DMC) catalysts, a process for the preparation of these DMC catalysts, and to a process for the production of polyether polyols by the polyaddition of alkylene oxides to starter compounds which comprise active hydrogen atoms, wherein the catalyst comprises a) one or more double metal cyanide compounds, b) one or more organic complexing ligands, and c) one or more organic phosphates, organic phosphites, organic phosphonates, organic phosphonites, organic phosphinates or organic phosphinites. The catalysts according to the invention exhibit a considerably increased activity for polyether polyol production.

    摘要翻译: 本发明涉及新的双金属氰化物(DMC)催化剂,制备这些DMC催化剂的方法,以及通过将环氧烷烃加成到起始化合物(其包含活性氢原子)中加成聚醚多元醇的方法,其中 催化剂包括a)一种或多种双金属氰化物,b)一种或多种有机络合配体,和c)一种或多种有机磷酸盐,有机亚磷酸盐,有机膦酸盐,有机亚膦酸盐,有机次膦酸盐或有机亚磷酸盐。 根据本发明的催化剂对于聚醚多元醇的生产显示出显着提高的活性。

    Double metal cyanide catalysts for preparing poly-etherpolyols
    58.
    发明授权
    Double metal cyanide catalysts for preparing poly-etherpolyols 失效
    用于制备聚醚多元醇的双金属氰化物催化剂

    公开(公告)号:US06204357B1

    公开(公告)日:2001-03-20

    申请号:US09500840

    申请日:2000-02-10

    IPC分类号: C08G6500

    摘要: The invention is directed to new double metal cyanide (DMC) catalysts, a process for the preparation of these catalysts, and to a process for the preparation of polyetherpolyols by the polyaddition of alkylene oxides to starter compounds which contain active hydrogen atoms, wherein the catalyst comprises the novel double metal cyanide (DMC) catalyst of the present invention. These new double metal cyanide (DMC) catalysts comprise a) one or more double metal cyanide compounds, b) one or more organic complex ligands, and c) one or more cyclodextrins, with the proviso that b) and c) are different compounds. The catalysts of this invention exhibit greatly increased activity during preparation of a polyetherpolyol.

    摘要翻译: 本发明涉及新的双金属氰化物(DMC)催化剂,这些催化剂的制备方法,以及通过将烯化氧加成含有活性氢原子的起始化合物来制备聚醚多元醇的方法,其中催化剂 包括本发明的新型双金属氰化物(DMC)催化剂。 这些新的双金属氰化物(DMC)催化剂包括a)一种或多种双金属氰化物化合物,b)一种或多种有机络合物配体,和c)一种或多种环糊精,条件是b)和c)是不同的化合物。 本发明的催化剂在制备聚醚多元醇过程中表现出极大的增加的活性。

    Zinc/metal hexacyanocobaltate complex compounds, a process for their
preparation, and their use in a process for the production of polyether
polyols
    59.
    发明授权
    Zinc/metal hexacyanocobaltate complex compounds, a process for their preparation, and their use in a process for the production of polyether polyols 失效
    锌/金属六氰合钴酸盐络合物,其制备方法及其在制备聚醚多元醇的方法中的用途

    公开(公告)号:US5998327A

    公开(公告)日:1999-12-07

    申请号:US114359

    申请日:1998-07-13

    CPC分类号: B01J27/26 C08G65/2663

    摘要: The invention relates to novel zinc/metal hexacyanocobaltate complex compounds corresponding to the formula:Zn.sub.3-v M.sub.v [Co(CN).sub.6 ].sub.2.w(H.sub.2 O).x(L).y[Zn(X).sub.n ].z[M(Y).sub.m)].These complex compounds are suitable catalysts. This invention also relates to a process for the production of the compounds, and to the use of the compounds in a process for the production of polyether polyols.These novel zinc/metal hexacyanocobaltate complex compounds when used as catalysts in a process for the production of polyether polyols substantially reduce the induction period of the polyaddition reaction of alkylene oxides to starter compounds containing hydrogen atoms. Furthermore, the resultant polyether polyols have a significantly narrower molecular weight distribution.

    摘要翻译: 本发明涉及对应于式Zn3-vMv [Co(CN)6] 2.w(H2O).x(L).y [Zn(X)n] .z [M]的新型锌/金属六氰合钴酸盐络合物 (Y)m)]。 这些络合物是合适的催化剂。 本发明还涉及一种生产该化合物的方法,以及该化合物在制备聚醚多元醇的方法中的用途。 当在制备聚醚多元醇的方法中用作催化剂时,这些新型的锌/金属六氰合钴酸盐络合物基本上降低了环氧烷烃与起始化合物含氢原子的加成反应的诱导期。 此外,所得聚醚多元醇具有明显较窄的分子量分布。