Title:
DEPOLYMERIZATION METHOD FOR RESIN HAVING FLUORENE SKELETON, AND PRODUCT AND APPLICATION THEREOF
Document Type and Number:
WIPO Patent Application WO/2024/014448
Kind Code:
A1
Abstract:
According to the present invention, in the presence of a hydrolysis catalyst, a fluorene-containing resin having a fluorene skeleton and an ester bond and/or a carbonic acid ester bond is reacted with carbonic acid ester to decompose the fluorene-containing resin, and the fluorene-containing resin is depolymerized by a depolymerization method that obtains a decomposition product. According to this depolymerization method, the fluorene-containing resin can be simply depolymerized. The decomposition product may include a mono-carbonate of diol and/or a di-carbonate of diol. In the depolymerization method, alcohol may be reacted with the decomposition product to obtain diol.
Inventors:
YOSHIMURA HIROSHI (JP)
Application Number:
PCT/JP2023/025537
Publication Date:
January 18, 2024
Filing Date:
July 11, 2023
Export Citation:
Assignee:
OSAKA GAS CHEMICALS CO LTD (JP)
International Classes:
C07C68/08; C07B61/00; C07C41/26; C07C43/21; C07C67/03; C07C68/06; C07C68/065; C07C69/616; C07C69/96; C08G63/78; C08G63/91; C08J11/24; C08J11/26
Foreign References:
| JP2015096596A | 2015-05-21 | |||
| JP2015110555A | 2015-06-18 | |||
| JP2015196676A | 2015-11-09 | |||
| JP2016204271A | 2016-12-08 | |||
| JP2009057483A | 2009-03-19 | |||
| JP2019131824A | 2019-08-08 | |||
| JP2021001346A | 2021-01-07 | |||
| JP2017201002A | 2017-11-09 | |||
| JP2011215283A | 2011-10-27 | |||
| JP2002309015A | 2002-10-23 | |||
| JPH06287230A | 1994-10-11 |
Other References:
TANAKA SHINJI, SATO JUNICHI, NAKAJIMA YUMIKO: "Capturing ethylene glycol with dimethyl carbonate towards depolymerisation of polyethylene terephthalate at ambient temperature", GREEN CHEMISTRY, ROYAL SOCIETY OF CHEMISTRY, GB, vol. 23, no. 23, 29 November 2021 (2021-11-29), GB , pages 9412 - 9416, XP093129076, ISSN: 1463-9262, DOI: 10.1039/D1GC02298A
Attorney, Agent or Firm:
SAKANAKA Hiroshi et al. (JP)
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