Double-metal cyanide catalysts for preparing polyether polyols

Details Double-metal cyanide catalysts for preparing polyether polyols Double-metal cyanide catalysts for preparing polyether polyols

2005-02-08

2005-02-08

Wood, Elizabeth D. (Department: 1755)

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Inorganic carbon containing

C502S159000, C502S162000, C502S167000, C502S168000, C502S172000

Reexamination Certificate

active

06852663

ABSTRACT:
The invention is directed to a double-metal cyanide catalyst for the preparation of a polyether polyol by the polyaddition of an alkylene oxide on to a starter compound containing active hydrogen atoms, wherein the DMC catalyst comprises a) at least one double-metal cyanide compound; b) at least one organic complexing ligand which is not a polyether, polyester, polycarbonate, polyalkylene glycol sorbitan ester, polyalkylene glycol glycidyl ether, glycidyl ether, glycoside, carboxylic acid ester of polyhydric alcohol, cyclodextrin, phosphorus compound, α,β-unsaturated carboxylic acid ester or ionic surfactant compound; c) at least one polyether; and d) at least one polyester, polycarbonate, polyalkylene glycol sorbitan ester, polyalkylene glycol glycidyl ether, glycidyl ether, glycoside, carboxylic acid ester of polyhydric alcohol, cyclodextrin, phosphorus compound, α,β-unsaturated carboxylic acid ester or ionic surfactant compound. The catalyst of the present invention has increased activity in the preparation of a polyether polyol.

REFERENCES:
patent: 3404109 (1968-10-01), Milgrom
patent: 3829505 (1974-08-01), Herold
patent: 3941849 (1976-03-01), Herold
patent: 5158922 (1992-10-01), Hinney et al.
patent: 5470813 (1995-11-01), Le-Khac
patent: 5482908 (1996-01-01), Le-Khac
patent: 5536883 (1996-07-01), Le-Khac
patent: 5545601 (1996-08-01), Le-Khac
patent: 5627120 (1997-05-01), Le-Khac
patent: 5637673 (1997-06-01), Le-Khac
patent: 5712216 (1998-01-01), Le-Khac et al.
patent: 5789626 (1998-08-01), Le-Khac
patent: 6018017 (2000-01-01), Le-Khac
patent: 6323375 (2001-11-01), Hofmann et al.
patent: 4-145123 (1992-05-01), None

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