Title:
PROCESS FOR PRODUCING POLYETHER
Document Type and Number:
Japanese Patent JP2002212281
Kind Code:
A
Abstract:
To efficiently produce a polyether with a reduced catalyst content.
A process for producing polyethers comprises treating a catalyst- containing polyether obtained by subjecting a ≥3C monoepoxide to ring opening polymerization in the presence of a composite metal cyanide complex catalyst with a treating agent containing a heat treated metal sulfate to deactivate the catalyst, and then removing the deactivated catalyst and the treating agent.
Inventors:
HASHIMOTO YOSHIYUKI
MATSUO MICHIKO
MATSUO MICHIKO
Application Number:
JP2001015154A
Publication Date:
July 31, 2002
Filing Date:
January 24, 2001
Export Citation:
Assignee:
DAI ICHI KOGYO SEIYAKU CO LTD
International Classes:
C08G65/30; (IPC1-7): C08G65/30
Attorney, Agent or Firm:
Sota Asahina (1 person outside)
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