Title:
PRODUCTION OF POLYETHER POLYOL
Document Type and Number:
Japanese Patent JP3213625
Kind Code:
B2
Abstract:
PURPOSE: To produce a polyether polyol which enables the preparation of a rigid polyurethane foam with a markedly decreased amt. used of a chlorofluorocarbon blowing agent.
CONSTITUTION: An initiator component having a mean functionality of 4.0-6.0 and comprising a mixture of a sugar alcohol having at least 4 hydroxyl groups in the molecule with a polyether polyol having 3 hydroxyl groups in the molecule and a hydroxyl value of at least 600mgKOH/g is allowed to undergo addition reaction with an alkylene oxide component comprising 2-50wt.% ethylene oxide and 98-50wt.% propylene oxide. The resulting polyether polyol is used as the major part of a polyol component which is reacted with a polyisocyanate to prepare a rigid polyurethane foam with a markedly decreased amt. used of a chlorofluorocarbon blowing agent.
Inventors:
Yukichi Yamashita
Satoshi Hayano
Katsuo Sekiya
Katsuma Fujima
Shuichi Kaneda
Hitoshi Saito
Satoshi Hayano
Katsuo Sekiya
Katsuma Fujima
Shuichi Kaneda
Hitoshi Saito
Application Number:
JP33862291A
Publication Date:
October 02, 2001
Filing Date:
December 20, 1991
Export Citation:
Assignee:
Asahi Denka Kogyo Co., Ltd.
International Classes:
C08G18/65; C08G18/48; C08G65/28; C08G101/00; (IPC1-7): C08G65/28; C08G18/65
Domestic Patent References:
| JP5755927A | ||||
| JP56149428A |
Attorney, Agent or Firm:
Soga Doteru (6 people outside)