Title:
ポリオキシアルキレンポリオール、ポリマー分散ポリオール、および軟質ポリウレタンフォーム、ならびにこれらの製造方法
Document Type and Number:
Japanese Patent JP5545364
Kind Code:
B2
Abstract:
To provide a process for producing a polyoxyalkylene polyol having a high primary hydroxylation rate of the terminal hydroxyl groups, in spite of a low degree of total unsaturation and a low content of oxyethylene groups. A process for producing a polyoxyalkylene polyol, which comprises: a first polymerization step of subjecting propylene oxide and/or a mixture of propylene oxide and ethylene oxide to ring-opening addition polymerization to an initiator in the presence of a double metal cyanide complex catalyst (a1) to obtain a first intermediate polyol; a second polymerization step of subjecting, after the first polymerization step, propylene oxide to ring-opening addition polymerization in the presence of a polymerization catalyst (a2) made of an alkali metal hydroxide and/or an alkali metal alcoholate compound to obtain a second intermediate polyol; and a third polymerization step of subjecting, after the second polymerization step, ethylene oxide to ring-opening addition polymerization in the presence of a polymerization catalyst (a2) to obtain a polyoxyalkylene polyol (A1).
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Inventors:
Takayuki Sasaki
Naohiro Kumagai
Takashi Ito
Hisakazu Harada
Akio Horie
Suzuki 1000 Toshi
Arai 豪明
Masahito Furuumi
Naohiro Kumagai
Takashi Ito
Hisakazu Harada
Akio Horie
Suzuki 1000 Toshi
Arai 豪明
Masahito Furuumi
Application Number:
JP2012512922A
Publication Date:
July 09, 2014
Filing Date:
April 28, 2011
Export Citation:
Assignee:
Asahi Glass Co., Ltd.
International Classes:
C08G65/28; C08G18/48; C08G65/10
Domestic Patent References:
| JPH0314812A | 1991-01-23 | |||
| JPH07278289A | 1995-10-24 | |||
| JPH10279655A | 1998-10-20 | |||
| JP2007204680A | 2007-08-16 | |||
| JP2004269849A | 2004-09-30 | |||
| JP2002543228A | 2002-12-17 |
Foreign References:
| WO2006115169A1 | 2006-11-02 |
Attorney, Agent or Firm:
Sumio Tanai
Masatake Shiga
Mitsuyoshi Suzuki
Yanai Noriko
Masatake Shiga
Mitsuyoshi Suzuki
Yanai Noriko