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Title:
DECOMPOSITION METHOD BY HIGH-TEMPERATURE WATER FOR POLYBUTYLENE TEREPHTHALATE
Document Type and Number:
Japanese Patent JP2010215676
Kind Code:
A
Abstract:

To provide a novel polybutylene terephthalate decomposition method capable of industrially advantageously obtaining terephthalic acid and tetrahydrofuran from polybutylene terephthalate.

In the environment-harmonization type decomposition method for the polybutylene terephthalate utilizing high temperature water, the polybutylene terephthalate is decomposed to terephthalic acid and tetrahydrofuran at higher efficiency than a prior art by adding terephthalic acid, i.e., a constitution monomer of the polybutylene terephthalate into a reaction system containing high temperature water. In a chemical recycling method for the polybutylene terephthalate product, the polybutylene terephthalate product is reproduced using the obtained monomer as a raw material. According to the present invention, the environment-harmonization type recycling technology attaining that it is efficiently decomposed to terephthalic acid and tetrahydrofuran only by high temperature water can be provided.


Inventors:
SHIRAI MASAYUKI
MURAKAMI YUKA
MORIYA TOMOMI
MASUDA YOSHIO
YAMAGUCHI ARITOMO
HIYOSHI NORITO
SATO OSAMU
Application Number:
JP2009060334A
Publication Date:
September 30, 2010
Filing Date:
March 12, 2009
Export Citation:
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Assignee:
NAT INST OF ADVANCED IND SCIEN
International Classes:
C08J11/16; C07C27/02; C07C29/09; C07C31/20; C07C51/09; C07C51/43; C07C63/26; C07D307/08; C08J11/26; C07B61/00
Domestic Patent References:
JP2001151934A2001-06-05
JP2003155372A2003-05-27
JPS5363338A1978-06-06
JP2000309663A2000-11-07
JP2008214589A2008-09-18
JP2004250414A2004-09-09
JP2001151934A2001-06-05
JP2003155372A2003-05-27
JPS5363338A1978-06-06
JP2000309663A2000-11-07
Foreign References:
US4605762A1986-08-12
Attorney, Agent or Firm:
Masahiko Sudo



 
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