Title:
ポリエーテルポリオールの製造方法及びポリウレタンフォームの製造方法
Document Type and Number:
Japanese Patent JP6634531
Kind Code:
B2
Abstract:
The present invention aims to provide a method of producing a polyether polyol having a low aldehyde content, the method including simpler steps; and a method of producing polyurethane foam having a reduced amount of aldehyde volatilization. The present invention provides a method of producing a polyether polyol (F) including step (1) of obtaining a crude polyether polyol composition (D2) having a pH higher than 5.0 by contact of a crude polyether polyol composition (D1) containing a polyether polyol (A) with an acid catalyst (B) in the presence of water, the polyether polyol (A) being obtainable by ring-opening polymerization of an alkylene oxide with an active hydrogen compound; and step (2) of removing a volatile component containing an aldehyde (C) after step (1).
Inventors:
Nobukuni Erika
Naoshi Yabuta
Naoshi Yabuta
Application Number:
JP2018560390A
Publication Date:
January 22, 2020
Filing Date:
December 28, 2017
Export Citation:
Assignee:
SANYO CHEMICAL INDUSTRIES,LTD.
International Classes:
C08G65/30; C08G18/00; C08G18/48; C08G65/10
Domestic Patent References:
| JP2015172181A |
Attorney, Agent or Firm:
Atomi International Patent Office