Title:
POLYESTER DECOMPOSITION METHOD, POLYESTER PRODUCTION METHOD, AND POLYESTER DECOMPOSITION PRODUCT RECOVERY METHOD
Document Type and Number:
WIPO Patent Application WO/2024/034609
Kind Code:
A1
Abstract:
[Problem] To provide: a polyester decomposition method capable of decomposing polyester and polyester contained in various polyester-containing materials into monomers by a simple process at a low temperature of 150°C or less; a polyester production method that produces polyester from monomers obtained by this decomposition method; and a polyester decomposition product recovery method that recovers a predetermined polyester decomposition product from the polyester decomposition product obtained by this polyester decomposition method. [Solution] A polyester decomposition method for polyester contained in a polyester-containing material, the polyester decomposition method having a decomposition step that mixes a base, a monohydric alcohol, and a carbonic acid diester to decompose the polyester.
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Inventors:
TANAKA SHINJI (JP)
NAKAJIMA YUMIKO (JP)
SATO KAZUHIKO (JP)
KURAGANO TAKASHI (JP)
OGAWA ATSUKO (JP)
NAKAJIMA YUMIKO (JP)
SATO KAZUHIKO (JP)
KURAGANO TAKASHI (JP)
OGAWA ATSUKO (JP)
Application Number:
PCT/JP2023/028929
Publication Date:
February 15, 2024
Filing Date:
August 08, 2023
Export Citation:
Assignee:
AIST (JP)
International Classes:
C08J11/22; C07C67/03; C07C69/82; C08G63/78
Foreign References:
| CN112898630A | 2021-06-04 | |||
| JP2007332361A | 2007-12-27 | |||
| JP2001039908A | 2001-02-13 | |||
| JP2007045874A | 2007-02-22 | |||
| JP6986813B1 | 2021-12-22 | |||
| JP2020533395A | 2020-11-19 |
Other References:
KAGAKU-SOCHI = PLANT AND PROCESS, CHOSAKAI, JP, vol. 64, no. 6, 1 June 2022 (2022-06-01), JP , pages 53 - 59, XP009552869, ISSN: 0368-4849
Attorney, Agent or Firm:
BRANCHE INTERNATIONAL IP LAW FIRM. P. C. (JP)
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