Title:
染着ポリエステル繊維からの有用成分製造方法
Document Type and Number:
Japanese Patent JP4908415
Kind Code:
B2
Abstract:
To establish an efficient and economical useful component recovery method capable of recovering high purity useful components from a dyed polyester fiber. A method for recovering useful components from a dyed polyester fiber, includes a dye extraction step, a solid liquid separation step, a depolymerization reaction step, an ester interchange reaction step, and a useful component separation step, for recovering useful components from the dyed polyester fiber, wherein the dye extraction step includes a step of extracting and removing a dye at the glass transition temperature of the polyester or higher and at 220°C or less with a xylene extracting solvent and an alkylene glycol extracting solvent in combination.
Inventors:
Koji Mukai
Minoru Nakajima
Minoru Nakajima
Application Number:
JP2007529562A
Publication Date:
April 04, 2012
Filing Date:
July 31, 2006
Export Citation:
Assignee:
Teijin Limited
International Classes:
C08J11/00; C07C27/02; C07C29/80; C07C31/20; C07C51/09; C07C63/26; C08J11/24
Domestic Patent References:
| JP2004217871A | 2004-08-05 | |||
| JP2004300115A | 2004-10-28 | |||
| JP4537288B2 | 2010-09-01 |
Attorney, Agent or Firm:
Taro Tameyama