Title:
POLYESTER RESIN HYDROLYZATE PRODUCTION METHOD
Document Type and Number:
WIPO Patent Application WO/2015/137365
Kind Code:
A1
Abstract:
The present invention provides a hydrolyzate production method in which the structural material of a polyester resin can be recovered with high quality from a material to be processed which includes the polyester resin. This polyester resin hydrolyzate production method comprises at least the following: a first step in which a material to be processed which includes a polyester resin such as polyethylene-telephthalate is exposed to a water vapor atmosphere and hydrolyzed to obtain a first hydrolyzate; and a second step in which the first hydrolyzate is heated in hot water and then further hydrolyzed to obtain a second hydrolyzate.
Inventors:
YAMAMOTO AKIYOSHI (JP)
TAKANASHI KOUICHI (JP)
ONISHI YOSHIHIRO (JP)
YOSHIKAWA TOSHIYUKI (JP)
TAKANASHI KOUICHI (JP)
ONISHI YOSHIHIRO (JP)
YOSHIKAWA TOSHIYUKI (JP)
Application Number:
PCT/JP2015/057068
Publication Date:
September 17, 2015
Filing Date:
March 10, 2015
Export Citation:
Assignee:
NITTO DENKO CORP (JP)
International Classes:
C08J11/14; C07C31/20; C07C63/26
Domestic Patent References:
| WO2004041917A1 | 2004-05-21 |
Foreign References:
| JP2003183507A | 2003-07-03 | |||
| JP2003527363A | 2003-09-16 | |||
| JP2012219210A | 2012-11-12 | |||
| JP2008308416A | 2008-12-25 | |||
| JP2001335518A | 2001-12-04 |
Attorney, Agent or Firm:
Eikoh Patent Firm, P. C. et al. (JP)
Patent business corporation glory patent firm (JP)
Patent business corporation glory patent firm (JP)
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