Double-metal cyanide catalysts which can be used to prepare polyols and the processes related thereto
    2.
    发明授权
    Double-metal cyanide catalysts which can be used to prepare polyols and the processes related thereto 有权
    可用于制备多元醇的双金属氰化物催化剂及其相关方法

    公开(公告)号:US06867162B2

    公开(公告)日:2005-03-15

    申请号:US10717094

    申请日:2003-11-19

    申请人: Bi Le-Khac Wie Wang

    发明人: Bi Le-Khac Wie Wang

    摘要: The present invention is directed to double metal cyanide catalysts (“DMC”) which are prepared by combining i) at least one metal salt; ii) at least one metal cyanide salt; iii) at least one organic complexing ligand; iv) at least one alkali metal salt; and, optionally, v) at least one functionalized polymer under conditions sufficient to form a catalyst; and adding a sufficient amount of the at least one alkali metal salt to the catalyst so formed in an amount such that the catalyst includes the at least one alkali metal salt in an amount of from about 0.4 to about 6 wt. % based on the total weight of the catalyst. The polyols produced in the presence of the catalysts of the present invention have reduced levels of high molecular weight tail.

    摘要翻译: 本发明涉及通过组合i)至少一种金属盐制备的双金属氰化物催化剂(“DMC”), ii)至少一种金属氰化物盐; iii)至少一种有机络合配体; iv)至少一种碱金属盐; 和任选地,v)在足以形成催化剂的条件下的至少一种官能化聚合物; 并向所形成的催化剂中加入足量的至少一种碱金属盐,其量使得催化剂包含至少一种碱金属盐,其量为约0.4至约6wt。 %,基于催化剂的总重量。 在本发明的催化剂存在下制备的多元醇具有降低的高分子量尾料水平。