Patent ID: 11898007
Assignee: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH
Field: Organic fine chemistry (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A double metal cyanide [DMC] catalyst comprising:
(a) 25 to 75 wt % double metal cyanide [DMC] complex;
(b) 25 to 74 wt % an organic complexing agent; and optionally
(c) 1 to 10 wt % co-complexing agent;
based on the combined weight of the DMC complex, the organic complexing agent, and the co-complexing agent, when present;
wherein said organic complexing agent is selected from ethylenediaminetetraacetic acid (EDTA), EDTA alkali metal salt, or a mixture thereof; and
wherein said optional co-complexing agent used is selected from tertiary butanol (t-BuOH), a polyether polyol (PEPO), or a combination thereof.