Title:
METHOD FOR PRODUCING POLYHYDROXYALKANOIC ACID AND USE OF SAME
Document Type and Number:
WIPO Patent Application WO/2023/037710
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a method for producing PHA having excellent thermal stability, in a pH range in which there is no need to use a corrosion-resistant device. This problem is overcome by providing a method for producing polyhydroxyalkanoic acid comprising steps (a) and (b): (a) preparing an aqueous suspension containing polyhydroxyalkanoic acid, an alkylene oxide-based dispersant, and a specific amount of a compound that has a plurality of carboxyl groups and/or a compound that has one or more phosphoric acid groups, and having a pH of 3.5 to 7.0; and (b) drying the aqueous suspension prepared in (a).
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Inventors:
HIRANO MASARU (JP)
HATTORI JUN (JP)
HATTORI JUN (JP)
Application Number:
PCT/JP2022/025442
Publication Date:
March 16, 2023
Filing Date:
June 27, 2022
Export Citation:
Assignee:
KANEKA CORP (JP)
International Classes:
C08G63/06; C08G63/90; C08J3/07; C08K5/09; C08L33/02; C08L67/04; C08L71/02; C08L101/16
Domestic Patent References:
| WO2021085534A1 | 2021-05-06 |
Foreign References:
| US20130093119A1 | 2013-04-18 | |||
| CN110128804A | 2019-08-16 | |||
| US20040039092A1 | 2004-02-26 |
Attorney, Agent or Firm:
HARAKENZO WORLD PATENT & TRADEMARK (JP)
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