Title:
ポリエチレンテレフタレート廃棄物からの有効成分回収方法
Document Type and Number:
Japanese Patent JP4065659
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for recovering an available component efficiently and economically so as to make it possible to obtain a recovering monomer of high purity and enhance a handling of fibrous flocks as to the method for recovering the available component from polyester waste containing impurities. SOLUTION: A pretreatment process which enhances a handling by removing a waste when the waste is decided to be the waste other than polyester according to an examination by a distincting apparatus and grinding and granulating the waste passing the examination, is performed. Thereafter a method for recovering a recovering monomer of high purity can be performed easily and economically by providing a reaction process including a removing process of impurities by physical and chemical treatment.
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Inventors:
Miyamoto Orthodox Christianity
Minoru Nakajima
Kazuhiro Sato
Minoru Nakajima
Kazuhiro Sato
Application Number:
JP2000364633A
Publication Date:
March 26, 2008
Filing Date:
November 30, 2000
Export Citation:
Assignee:
TEIJIN FIBERS LIMITED
International Classes:
C07C27/02; G01N33/44; B01D11/02; B02C19/00; B02C23/00; B02C23/08; B29B17/00; B29B17/04; C07B37/06; C07B61/00; C07C29/128; C07C31/04; C07C31/20; C07C67/03; C07C67/04; C07C67/54; C07C69/82; C08J11/10; C08J11/16; C08L67/00; B29K67/00
Domestic Patent References:
| JP48103680A | ||||
| JP48061447A | ||||
| JP51001434A | ||||
| JP2000198876A | ||||
| JP9099433A | ||||
| JP11320558A | ||||
| JP9089768A | ||||
| JP51115577A | ||||
| JP200260542A |
Foreign References:
| WO2001030729A1 |
Attorney, Agent or Firm:
Hideko Mihara