The present invention is directed to a process for preparing a double metal cyanide catalyst of Formula I (M
a
[M′(CN)
c
Z
w
]
b
.zA), wherein M is a main group or transition metal cation, M′ is a main group or transition metal cation, which can be the same or different from M, Z is an anion or ligand other than cyanide, A is an amphiphilic agent selected from heteroatom-containing organic compounds having at least one polar head group and an aliphatic, aromatic or partially aromatic moiety having a number of 6 to 42 carbon atoms, w is an integer greater than or equal to 0, but lower than c; a, b and c are integers greater than or equal to 1 so that catalyst (I) is electrically neutral, and z is a number from 0 to 12, which process comprises (a) reacting a metal salt of Formula II (M
e
X
f
), wherein X is an anion and e and f are integers greater than or equal to 1 so that metal salt (II) is electrically neutral, with a cyanometallate complex of Formula III (D
g
[M′(CN)
c
]
b
), wherein D is a cation and g is an integer greater than or equal to 1 so that complex (III) is electrically neutral, and M′, Z, c, w and b are defined as described above, in the presence of the amphiphilic agent A and optionally a solvent L to obtain a double metal cyanide adduct of Formula IV (M
a
[M′(CN)
c
]
b
.xA.yL), wherein x is a number greater than or equal to 1 and y is a number greater than or equal to 0; and (b) thermally treating the adduct (IV) to obtain the double metal cyanide catalyst of Formula (I).
本发明涉及一种制备公式I的双
金属
氰化物催化剂的过程(Ma[M′(CN)cZw]b.zA),其中M是主族或过渡
金属阳离子,M′是主族或过渡
金属阳离子,可以与M相同或不同,Z是除
氰离子外的阴离子或
配体,A是选择自具有至少一个极性头基和具有6到42个碳原子的脂肪,芳香或部分芳香基团的杂原子含有机化合物的两性分子,w是大于或等于0但小于c的整数; a,b和c是大于或等于1的整数,使得催化剂(I)是电中性的,z是0到12的数字,该过程包括(a)在两性分子剂A和可选的溶剂L的存在下,将公式II的
金属盐(MeXf),其中X是阴离子,e和f是大于或等于1的整数,以使
金属盐(II)是电中性的,与公式III的
氰金属酸盐配合物(Dg[M′(CN)c]b)反应,其中D是阳离子,g是大于或等于1的整数,以使复合物(III)是电中性的,并且M',Z,c,w和b如上所述定义,以获得公式IV的双
金属
氰化物加合物(Ma[M′(CN)c]b.xA.yL),其中x大于或等于1,y大于或等于0;以及(b)热处理加合物(IV)以获得公式(I)的双
金属
氰化物催化剂。