Highly active double metal cyanide complex catalysts
    3.
    发明授权
    Highly active double metal cyanide complex catalysts 失效
    高活性双金属氰化物配合物催化剂

    公开(公告)号:US5780584A

    公开(公告)日:1998-07-14

    申请号:US780659

    申请日:1997-01-07

    CPC分类号: C08G65/2663 B01J27/26

    摘要: Highly active double metal cyanide (DMC) complex catalysts and methods for making them are disclosed. The catalysts contain less than about 0.2 moles of metal salt per mole of DMC compound in the catalyst, and unlike other highly active DMC catalysts, are substantially crystalline. Polyether polyols made from the catalysts have low unsaturation and are useful for making many types of polyurethane products.

    摘要翻译: 公开了高活性双金属氰化物(DMC)复合催化剂及其制备方法。 该催化剂在催化剂中每摩尔DMC化合物含有小于约0.2摩尔金属盐,并且与其它高活性DMC催化剂不同,其基本上是结晶的。 由催化剂制成的聚醚多元醇具有低不饱和度,可用于制备许多类型的聚氨酯产品。

    Highly active double metal cyanide complex catalysts
    4.
    发明授权
    Highly active double metal cyanide complex catalysts 失效
    高活性双金属氰化物配合物催化剂

    公开(公告)号:US5627122A

    公开(公告)日:1997-05-06

    申请号:US505938

    申请日:1995-07-24

    CPC分类号: C08G65/2663 B01J27/26

    摘要: Highly active double metal cyanide (DMC) complex catalysts and methods for making them are disclosed. The catalysts contain less than about 0.2 moles of metal salt per mole of DMC compound in the catalyst, and unlike other highly active DMC catalysts, are substantially crystalline. Polyether polyols made from the catalysts have low unsaturation and are useful for making many types of polyurethane products.

    摘要翻译: 公开了高活性双金属氰化物(DMC)复合催化剂及其制备方法。 该催化剂在催化剂中每摩尔DMC化合物含有小于约0.2摩尔金属盐,并且与其它高活性DMC催化剂不同,其基本上是结晶的。 由催化剂制成的聚醚多元醇具有低不饱和度,可用于制备许多类型的聚氨酯产品。

    Highly active double metal cyanide complex catalysts
    5.
    发明授权
    Highly active double metal cyanide complex catalysts 失效
    高活性双金属氰化物配合物催化剂

    公开(公告)号:US5712216A

    公开(公告)日:1998-01-27

    申请号:US435116

    申请日:1995-05-15

    摘要: Improved double metal cyanide catalysts are disclosed. The substantially amorphous catalysts of the invention are more active for polymerizing epoxides than conventional DMC catalysts, which have a substantial crystalline component. Polyol products made with the catalysts are unusually clear, have exceptionally low unsaturations, and contain no detectable amount of low molecular weight polyol impurities. Methods of making the improved DMC catalysts are also disclosed. In one method, the reactants are intimately combined to produce a catalyst of the invention. In another method, an organic complexing agent is initially present in the reactant solutions.

    摘要翻译: 公开了改进的双金属氰化物催化剂。 与具有大量结晶成分的常规DMC催化剂相比,本发明的基本上无定形的催化剂对聚合环氧化物更有活性。 用催化剂制成的多元醇产品异常清楚,具有非常低的不饱和度,并且不含可检测量的低分子量多元醇杂质。 还公开了制备改进的DMC催化剂的方法。 在一种方法中,将反应物紧密地组合以产生本发明的催化剂。 在另一种方法中,有机络合剂最初存在于反应物溶液中。

    Process for making double metal cyanide catalysts
    7.
    发明授权
    Process for making double metal cyanide catalysts 失效
    制造双金属氰化物催化剂的方法

    公开(公告)号:US5783513A

    公开(公告)日:1998-07-21

    申请号:US816611

    申请日:1997-03-13

    CPC分类号: C08G65/2663 B01J27/26

    摘要: A process for making substantially non-crystalline double metal cyanide (DMC) catalysts having improved activity and performance is disclosed. The process comprises using a metal salt having an alkalinity within the range of about 0.2 to about 2.0 wt. % as metal oxide based on the amount of metal salt to prepare the catalyst. Surprisingly, important polyol properties such as viscosity and unsaturation improve when the alkalinity of the metal salt used to make the DMC catalyst is properly controlled. The process allows catalyst producers to enjoy the benefits of substantially non-crystalline DMC catalysts even when relatively inexpensive, technical-grade metal salts are used to make the catalyst.

    摘要翻译: 公开了一种制备具有改进的活性和性能的基本上非结晶的双金属氰化物(DMC)催化剂的方法。 该方法包括使用碱度在约0.2至约2.0重量%范围内的金属盐。 %作为金属氧化物,基于金属盐的量来制备催化剂。 令人惊奇的是,当适当控制用于制造DMC催化剂的金属盐的碱度时,重要的多元醇性质如粘度和不饱和度得到改善。 即使使用相对便宜的工业级金属盐来制造催化剂,该方法也允许催化剂生产者享受基本上非结晶的DMC催化剂的益处。

    Process for purifying polyols made with double metal cyanide catalysts
    10.
    发明授权
    Process for purifying polyols made with double metal cyanide catalysts 失效
    用双金属氰化物催化剂制备多元醇的方法

    公开(公告)号:US5248833A

    公开(公告)日:1993-09-28

    申请号:US948275

    申请日:1992-09-22

    CPC分类号: C07C41/44 C08G65/2663

    摘要: A process for purifying polyether polyols prepared using double metal cyanide (DMC) catalysts is disclosed. The process involves combining a mixture of the polyol and a C.sub.1 -C.sub.6 aliphatic alcohol with an amount of a chelating agent effective to form an insoluble complex with the catalyst, then filtering the polyol mixture to remove the insoluble complex. The process, which requires that the polyol and alcohol be present in a relative weight ratio of from 1:1 to 100:1, is effective for removing DMC residues and any cations introduced with the chelating agent.