Title:
ポリウレタンの分解方法
Document Type and Number:
Japanese Patent JP4601223
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a process for decomposing a polyurethane which can recover a polyisocyanate compound and a polyol from the polyurethane. SOLUTION: This process for decomposing the polyurethane comprises a decomposition step of decomposing the polyurethane by heating at 200-350 deg.C in an inert gas to form a decomposed product and a separation step of bringing the above decomposed product into contact with a supercritical carbon dioxide gas to extract and separating at least one of a polyol component and a polyisocyanate component in the above decomposed product.
Inventors:
Kazuyuki Ogawa
Junji Hirose
Junji Hirose
Application Number:
JP2001277639A
Publication Date:
December 22, 2010
Filing Date:
September 13, 2001
Export Citation:
Assignee:
TOYO TIRE & RUBBER CO.,LTD.
International Classes:
B01D11/00; C08J11/12; B01J3/00; C08L75/04
Domestic Patent References:
| JP11335343A | ||||
| JP2001081234A | ||||
| JP10310663A |
Attorney, Agent or Firm:
Patent Business Corporation Unias International Patent Office
Yuzo Ozaki
Koichi Kajisaki
Toshihiko Taniguchi
Kazuto Muronozono
Yuzo Ozaki
Koichi Kajisaki
Toshihiko Taniguchi
Kazuto Muronozono