Gas separation membrane
A technology of gas separation membranes and divalent organic groups, which is applied in separation methods, semipermeable membrane separations, and dispersed particle separations. It can solve problems such as processability, strength, and separation performance, chemical structure, and chemical structure limitations that are difficult to design. , to achieve the effect of easy preparation of polyimide solution, excellent membrane physical properties and good separation performance
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment
[0148] Hereafter, although an Example demonstrates this invention concretely, this invention is not limited to these Examples.
[0149] [Preparation of polyimide film]
[0150] The preparation of a polyimide membrane containing a HFIP group and an alkyl group for a gas separation membrane will be described.
[0151] Add the following HFA-2DMeBD (2.06g, 3.78mmol), 6FDA (1.68g, 3.78mmol), and N,N-dimethylacetamide (14g) to a 200mL three-necked flask equipped with a nitrogen gas introduction tube and a reflux cooler, After stirring at room temperature under a nitrogen atmosphere for 18 hours, pyridine (0.66 g, 8.32 mmol) and acetic anhydride (0.77 g, 7.56 mmol) were added, followed by further stirring at room temperature for 3 hours. The resulting reaction liquid was heated up to 200° C., stirred for further 6 hours, and then cooled to room temperature. A homogeneous N,N-dimethylacetamide solution in which polyimide 1 was dissolved was obtained. The solution was measured by GP...
PUM
Property | Measurement | Unit |
---|---|---|
Transmission coefficient | aaaaa | aaaaa |
Transmission coefficient | aaaaa | aaaaa |
Transmission coefficient | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com