Polyimide fiber spinning solution based on 2, 2-double [4-(2, 4-diaminophenoxy) phenyl group] hexafluoropropane and preparation method thereof
A technology of diaminophenoxy, polyimide fiber, applied in the direction of fiber chemical characteristics, single-component synthetic polymer rayon, textiles and papermaking, etc., to achieve the effects of being conducive to industrialization, convenient source and simple operation
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Example Embodiment
[0036] Example 1
[0037] Add 54.8 g (0.1 mol) of 2,2-bis[4-(2,4-diaminophenoxy)phenyl]hexafluoropropane and 400 ml of N-methyl-2-pyrrolidone into the reaction kettle at room temperature After stirring to dissolve, add 29.6 g (0.2 mole) of phthalic anhydride powder, stir and react for 0.5 hours, then cool to below 5℃ in an ice water bath, add 10.9 g (0.05 mole) of pyromellitic dianhydride powder, and stir to react 0.5 Then, 16.1 g (0.05 mol) of 3,3',4,4'-tetracarboxybenzophenone dianhydride powder was added, the reaction temperature was maintained below 5°C, and the reaction was stirred for 2 hours to obtain a homogeneous transparent viscous A thick polyimide fiber spinning dope based on 2,2-bis[4-(2,4-diaminophenoxy)phenyl]hexafluoropropane.
[0038] Using BROOKFIELD's CAP2000+ lamina viscometer, its 80°C viscosity was 1549mPa·s.
[0039] Take an appropriate amount of the above-mentioned polyimide fiber spinning dope, evenly coat it on a clean flat glass sheet, and put it in a hig...
PUM
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.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap