초록 ▼

Double metal cyanide catalysts, prepared by drying a catalyst slurry by a non-agglomerative drying method such as spray drying or freeze drying, directly produces catalyst particles of fine particle size such that intensive grinding is not required. The catalysts thus produced are different from con

Double metal cyanide catalysts, prepared by drying a catalyst slurry by a non-agglomerative drying method such as spray drying or freeze drying, directly produces catalyst particles of fine particle size such that intensive grinding is not required. The catalysts thus produced are different from conventionally dried particles in that polyoxyalkylation may be conducted with less reactor fouling and a polyoxyalkylene product of lower unsaturation and narrower polydispersity may be obtained.

대표청구항 ▼

[ What is claimed is:] [1.] A process for the preparation of a double metal cyanide complex catalyst, comprising:a) preparing a slurry of double metal cyanide complex catalyst particles in a continuous phase comprising a volatile organic complexing agent;b) drying said double metal cyanide complex c

[ What is claimed is:] [1.] A process for the preparation of a double metal cyanide complex catalyst, comprising:a) preparing a slurry of double metal cyanide complex catalyst particles in a continuous phase comprising a volatile organic complexing agent;b) drying said double metal cyanide complex catalyst particles by removing said volatile organic complexing agent by a non-agglomerative drying method; andc) recovering a powdered double metal cyanide complex catalyst having a median particle size of less than 40 .mu.m.