Title:
POLYIMIDE RESIN HAVING EXCELLENT HEAT RESISTANCE AND OXIDATION STABILITY, AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2024/071790
Kind Code:
A1
Abstract:
The present invention pertains to a polyimide resin having excellent heat resistance and oxidation stability, and a method for producing same. The present invention improves the heat resistance and oxidation stability of a polyimide resin while preventing the degradation of mechanical properties such as tensile strength and elongation, by appropriately combining a rigid structure and a flexible structure through a specific combination of a diamine compound and a dianhydride compound. In addition, the polyimide resin is produced by mixing a first solvent and a second solvent that does not dissolve the starting materials, and the apparent density of the polyimide resin, which is a final product, can be adjusted by controlling the azeotropic point of the mixed solvent and reaction temperature when producing the polyimide resin.
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Inventors:
KIM JIN MO (KR)
KIM SANG HYUN (KR)
KIM DU YEONG (KR)
KIM SANG HYUN (KR)
KIM DU YEONG (KR)
Application Number:
PCT/KR2023/014046
Publication Date:
April 04, 2024
Filing Date:
September 18, 2023
Export Citation:
Assignee:
DAELIM CO LTD (KR)
International Classes:
C08G73/10; C08K3/04; C08L79/08
Foreign References:
| KR20190089688A | 2019-07-31 | |||
| KR20190130526A | 2019-11-22 | |||
| KR20120101660A | 2012-09-14 | |||
| KR20210062902A | 2021-06-01 | |||
| JP2018150544A | 2018-09-27 |
Attorney, Agent or Firm:
HALLA PATENT & LAW FIRM (KR)
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