Double metal cyanide catalyst and method for preparing same
AssigneeGs Caltex Corporation
InventorsWookdong Kim, Jisu Choi, Su Jeong Lee, Hyung Seok Suh, Sangchul Chung
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Abstract
One aspect of the present invention provides a double metal cyanide catalyst having excellent catalytic activity, and a method for preparing same. In particular, the double metal cyanide catalyst according to one aspect is characterized by being prepared using a complexing agent including tert-butanol, a linear or cyclic (C2-C12) aliphatic polyhydric alcohol, and polyalkylene glycol.
Claims15
A composition for a double metal cyanide catalyst comprising:
- tert-butanol;
- a linear or cyclic (C2-C12) aliphatic polyhydric alcohol;
- and polyalkylene glycol;
- as a complexing agent.
A method for preparing a double metal cyanide catalyst, the method comprising:
- (a) preparing a composition for a double metal cyanide catalyst comprising a complexing agent including tert-butanol, a linear or cyclic (C2-C12) aliphatic polyhydric alcohol, and polyalkylene glycol, a metal salt of the following Chemical Formula 1, and a metal cyanide complex salt of the following Chemical Formula 2 and reacting the composition;
- and
- (b) performing filtration and washing to obtain the double metal cyanide catalyst:
- wherein:
- M1 is a Group 11 or 12 transition metal ion;
- X1 is a halogen, a hydroxyl group, a sulfate group, a carbonate group, a carboxylate group, an oxalate group, or a cyanide group;
- A1 is an alkali metal ion or alkaline earth metal ion;
- M2 and M3 are different from each other and an alkaline earth metal ion or a Group 8, 9, or 10 transition metal ion;
- and
- p and q are independently of each other an integer of 1 or more, and r is 0 or 1.
A method for preparing a polyether carbonate polyol, the method comprising:
- (a) preparing a composition for a double metal cyanide catalyst including a complexing agent including tert-butanol, a linear or cyclic (C2-C12) aliphatic polyhydric alcohol, and polyalkylene glycol, a metal salt of the following Chemical Formula 1, and a metal cyanide complex salt of the following Chemical Formula 2 and reacting the composition;
- (b) performing filtration and washing to obtain a double metal cyanide catalyst;
- and
- (c) reacting alkylene oxide and carbon dioxide in the presence of the double metal cyanide catalyst to obtain a polyether carbonate polyol:
- wherein:
- M1 is a Group 11 or 12 transition metal ion;
- X1 is a halogen, a hydroxyl group, a sulfate group, a carbonate group, a carboxylate group, an oxalate group, or a cyanide group;
- A1 is an alkali metal ion or alkaline earth metal ion;
- M2 and M3 are different from each other and an alkaline earth metal ion or a Group 8, 9, or 10 transition metal ion;
- and
- p and q are independently of each other an integer of 1 or more, and r is 0 or 1.
Dependencies are inferred from the claim text.