PREPARATION METHOD FOR THERMAL CROSS-LINKED POLYMER SEPARATION MEMBRANE AND APPLICATION THEREOF

Title:

PREPARATION METHOD FOR THERMAL CROSS-LINKED POLYMER SEPARATION MEMBRANE AND APPLICATION THEREOF

Document Type and Number:

WIPO Patent Application WO/2023/082450

Kind Code:

A1

Abstract:

Provided are a preparation method for a thermal cross-linked polymer separation membrane and an application thereof. In the method, thermal oxygen cross-linking is used to prepare a stable covalently cross-linked polyimide membrane which has the advantages of mild reaction temperature, maintaining the main chain integrity, excellent plasticization resistance, etc. A strategy of dehydrogenation of a methyl substituent on an oxygen-induced benzene ring is established, so as to construct a cross-linked network in a benzyl polyimide system under a mild condition; and a cross-linked membrane has a higher chain stacking density, such that the cross-linked membrane has very excellent plasticization resistance even under a high-pressure CO2 feeding condition, and is expected to be used in the field of molecular separation such as gas separation and organic nanofiltration.

More Like This:

JP5717917	Particulate superabsorbent polymer composition with improved performance properties
JP5234477	Cross-linking method, resin composition and its manufacturing method, coating agent composition, paint composition, binder for printing ink, adhesive composition, cross-linked product of resin composition, and cross-linking agent.
JP4499344	Resin composition and prepreg using it, laminated board and multi-layer printed circuit board

Inventors:

WANG ZHENGGONG (CN)
JIN JIAN (CN)

Application Number:

PCT/CN2021/143126

Publication Date:

May 19, 2023

Filing Date:

December 30, 2021

Export Citation:

Click for automatic bibliography generation Help

Assignee:

UNIV SOOCHOW (CN)

International Classes:

C08J3/24; C08L79/08

Foreign References:

CN112533978A	2021-03-19
CN105289337A	2016-02-03
CN102448591A	2012-05-09
JP2000248252A	2000-09-12

Other References:

DENG LIMING, XUE YUNLONG, YAN JIE, LAU CHER HON, CAO BING, LI PEI: "Oxidative crosslinking of copolyimides at sub-Tg temperatures to enhance resistance against CO2-induced plasticization", JOURNAL OF MEMBRANE SCIENCE, ELSEVIER BV, NL, vol. 583, 1 August 2019 (2019-08-01), NL , pages 40 - 48, XP093067176, ISSN: 0376-7388, DOI: 10.1016/j.memsci.2019.04.002

Attorney, Agent or Firm:

CENTRAL SOUTH WELL INTELLECTUAL PROPERTY OFFICE (CN)

Download PDF:

View/Download PDF PDF Help

Previous Patent: MULTIPHASE NANO HETEROJUNCTION MATERIAL AND PREPARATION METHOD THEREFOR AND APPLICATION THEREOF

Next Patent: SHAPE CHANGE MECHANISM AND DISPLAY APPARATUS