Title:
METHOD FOR PRODUCING POLYIMIDE HOLLOW PARTICLES AND POLYIMIDE HOLLOW PARTICLES
Document Type and Number:
WIPO Patent Application WO/2024/009596
Kind Code:
A1
Abstract:
The present invention provides a method which is capable of producing polyimide hollow particles, the method being capable of producing polyimide hollow particles having excellent heat resistance without requiring use of template particles and without requiring high temperature and high pressure. The present invention also provides polyimide hollow particles which are produced by this production method. A method for producing polyimide hollow particles according to one embodiment of the present invention produces polyimide hollow particles, each of which has a shell part and a hollow portion that is surrounded by the shell part. This method for producing polyimide hollow particles comprises: a step for preparing an internal oil phase that contains polyamic acid fine particles and a solvent; a step for preparing an external oil phase which contains a hydrocarbon-based solvent and at least one substance that is selected from the group consisting of silicon dioxide and a compound having a siloxane bond; and a step for performing a chemical imidization reaction in an emulsion that has been prepared from the internal oil phase and the external oil phase.
Inventors:
OUCHI TAKUTO (JP)
MATSUNO SHINYA (JP)
MINAMI HIDETO (JP)
SUZUKI TOYOKO (JP)
MATSUNO SHINYA (JP)
MINAMI HIDETO (JP)
SUZUKI TOYOKO (JP)
Application Number:
PCT/JP2023/016722
Publication Date:
January 11, 2024
Filing Date:
April 27, 2023
Export Citation:
Assignee:
SEKISUI KASEI CO LTD (JP)
UNIV KOBE NAT UNIV CORP (JP)
UNIV KOBE NAT UNIV CORP (JP)
International Classes:
C08J3/16; B01J13/02; C08G73/10; C08J3/09; C08J9/28
Domestic Patent References:
| WO2022131022A1 | 2022-06-23 |
Foreign References:
| JP2019147743A | 2019-09-05 | |||
| CN105801857A | 2016-07-27 | |||
| JP2006182903A | 2006-07-13 |
Attorney, Agent or Firm:
KAMADA Koichi et al. (JP)
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