Title: Improved double-metal cyanide catalysts for production of polyether polyols
Application Number: 98812517 Application Date: 1998.12.10
Publication Number: 1283136 Publication Date: 2001.02.07
Approval Pub. Date: 2003.05.07 Granted Pub. Date: 2003.05.07
International Classifi-cation: B01J27/26;B01J31/06;C08G65/10
Applicant(s) Name: Bayer AG. Address:
Inventor(s) Name: J. Hofmann;P. Ooms;P. Guptz
Attorney & Agent: liu yuanjin
Abstract:
    The invention relates to new, improved double-metal cyanide (DMC) catalysts for the production of polyether polyols by polyaddition of alkyl propylene oxides and initiator compounds having active hydrogen atoms. The catalyst contains a double-metal cyanide compound, an organic complex ligand and between 2 and 80 weight percent, in relation to the quantity of catalyst, of a polycarbonate. These new improved catalysts offer significantly reduced induction periods and markedly raised activity for the production of polyether polyols.
Time: 12
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