Title:
METHOD FOR PRODUCING POLYOL
Document Type and Number:
Japanese Patent JP2002003421
Kind Code:
A
Abstract:
To provide a method for efficiently separating a polyol from a formic acid salt with a stable process operation in producing the polyol by reacting an aliphatic aldehyde with formaldehyde.
This method for producing a polyol is provided by removing an extracting agent and a part of water by distillation, and returning the used water to an extracting process.
Inventors:
NINOMIYA AKIYUKI
WATANABE TOSHIO
IWAMOTO ATSUSHI
MIYASHITA FUKUTAKE
WATANABE MASASHI
WATANABE TOSHIO
IWAMOTO ATSUSHI
MIYASHITA FUKUTAKE
WATANABE MASASHI
Application Number:
JP2000192470A
Publication Date:
January 09, 2002
Filing Date:
June 27, 2000
Export Citation:
Assignee:
MITSUBISHI GAS CHEMICAL CO
International Classes:
C07C29/38; C07B61/00; C07C29/80; C07C29/86; C07C31/20; C07C31/22; (IPC1-7): C07C29/38; C07C29/80; C07C29/86; C07C31/20; C07C31/22
Domestic Patent References:
| JPS5679632A | 1981-06-30 |
Foreign References:
| US3956406A | 1976-05-11 |
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