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Patent Searching and Data


Title:
METHOD FOR PRODUCING POLYETHER POLYOL AND METHOD FOR PRODUCING RIGID FOAM SYNTHETIC RESIN
Document Type and Number:
WIPO Patent Application WO/2012/077688
Kind Code:
A1
Abstract:
Provided is a method for producing a polyether polyol having a low viscosity and little odor, and that obtains favorable strength and fire resistance when producing a rigid foam synthetic resin. The method for producing a polyether polyol, said method performing ring-opening addition of an alkylene oxide to an initiator obtained by reacting a phenol, an aldehyde, and an alkanolamine, comprises: a first step for performing a ring-opening addition of at least one compound selected from propylene oxide and butylene oxide to the initiator without a catalyst; and a second step for performing a ring-opening addition of an alkylene oxide of which at least a portion is ethylene oxide to the reaction product of the first step under the presence of a catalyst. Of the total amount of alkylene oxide ring-opening added to the initiator, the portion that is ethylene oxide is 5-95 mol%.

Inventors:
YABUNO TATSUYA (JP)
SHIMIZU KATSUHIKO (JP)
HAYASHI TOMOHIRO (JP)
Application Number:
PCT/JP2011/078210
Publication Date:
June 14, 2012
Filing Date:
December 06, 2011
Export Citation:
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Assignee:
ASAHI GLASS CO LTD (JP)
YABUNO TATSUYA (JP)
SHIMIZU KATSUHIKO (JP)
HAYASHI TOMOHIRO (JP)
International Classes:
C08G65/28; C08G14/12; C08G18/48
Foreign References:
JPH03121113A1991-05-23
JP2007204765A2007-08-16
JP2000026567A2000-01-25
JPH04239516A1992-08-27
JPH08301820A1996-11-19
JPH03121113A1991-05-23
Other References:
See also references of EP 2650318A4
Attorney, Agent or Firm:
SENMYO, Kenji et al. (JP)
Spring name Kenji (JP)
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Claims: