Title:
COPOLYESTER COMPRISING 3-HYDROXYBUTYRIC ACID AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2024/029492
Kind Code:
A1
Abstract:
The present invention provides a copolyester comprising 3-hydroxybutyric acid which, while exhibiting high biodegradability, can suppress hydrolysis properties and bad odor by controlling the acid value derived from a degradation product under or equal to a define value. Also provided is a method for producing said copolyester. The copolyester of the present invention has structural units (3HB-U) derived from 3HB, structural units (DA-U) derived from DA, and structural units (DO-U) derived from DO. The content of the 3HB-U is 1 to 65 mol% relative to 100 mol of all the structural units of the copolyester, the average chain length of the 3HB-U in the copolyester is 2 to 80, and the acid value of the copolyester is 5 or less.
Inventors:
INAGAKI SHO (JP)
TAKANO AKIRA (JP)
KAI HIDETOMO (JP)
NAKAYAMA ATSUYOSHI (JP)
KAWASAKI NORIOKI (JP)
YAMANO NAOKO (JP)
TAKANO AKIRA (JP)
KAI HIDETOMO (JP)
NAKAYAMA ATSUYOSHI (JP)
KAWASAKI NORIOKI (JP)
YAMANO NAOKO (JP)
Application Number:
PCT/JP2023/027959
Publication Date:
February 08, 2024
Filing Date:
July 31, 2023
Export Citation:
Assignee:
DAINIPPON INK & CHEMICALS (JP)
AIST (JP)
AIST (JP)
International Classes:
C08G63/60; C08G63/78; C08L101/16
Domestic Patent References:
| WO2020242874A1 | 2020-12-03 |
Foreign References:
| CN112708246A | 2021-04-27 | |||
| CN111205603A | 2020-05-29 | |||
| CN101045810A | 2007-10-03 | |||
| US20220089862A1 | 2022-03-24 | |||
| JP2018016720A | 2018-02-01 | |||
| JP2017025138A | 2017-02-02 | |||
| JP2006274252A | 2006-10-12 |
Attorney, Agent or Firm:
NISHIZAWA Kazuyoshi et al. (JP)
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