A kind of preparation method of poly[2,5-dihydroxy-1,4-phenylenepyridodiimidazole] polymer
A technology of phenylene pyridine and diimidazole, which is applied in the field of PIPD polymer preparation, can solve the problems of difficulty in stirring and conveying, low polymer molecular weight, etc., and achieve the effects of increasing molecular weight, reducing production cost, and improving production efficiency
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0037] A kind of preparation method of poly[2,5-dihydroxyl-1,4-phenylene pyridodiimidazole] polymer, comprises the following processing steps:
[0038] A. Prepolymerization
[0039] Put 2,5-dihydroxyterephthalic acid (DHTA), tetraaminopyridine trihydrochloride monohydrate (TAP) and polyphosphoric acid (PPA) together into the polymerization kettle, mix well and remove hydrogen chloride gas, Carry out prepolymerization reaction then, obtain prepolymer;
[0040] B. After polycondensation
[0041] The discharge port of the polymerization kettle in step A is connected with the feed port of the twin-screw extruder, and the prepolymer is pressed into the described twin-screw extruder using dry nitrogen, and the prepolymer is extruded in the twin-screw extruder. After completing the post-condensation reaction in the machine, poly[2,5-dihydroxy-1,4-phenylenepyridinediimidazole] polymer is obtained; the reaction time of the prepolymer in the twin-screw extruder is 10min, The twin-scr...
Embodiment 2
[0043] A kind of preparation method of poly[2,5-dihydroxyl-1,4-phenylene pyridodiimidazole] polymer, comprises the following processing steps:
[0044] A. Prepolymerization
[0045] Put 2,5-dihydroxyterephthalic acid (DHTA), tetraaminopyridine trihydrochloride monohydrate (TAP) and polyphosphoric acid (PPA) together into the polymerization kettle, mix well and remove hydrogen chloride gas, Carry out prepolymerization reaction then, obtain prepolymer;
[0046] B. After polycondensation
[0047] The discharge port of the polymerization kettle in step A is connected with the feed port of the twin-screw extruder, and the prepolymer is pressed into the described twin-screw extruder using dry nitrogen, and the prepolymer is extruded in the twin-screw extruder. The post-condensation reaction was completed in the machine to obtain poly[2,5-dihydroxy-1,4-phenylenepyridinediimidazole] polymer; the reaction time of the prepolymer in the twin-screw extruder was 60min, The twin-screw ex...
Embodiment 3
[0049] A kind of preparation method of poly[2,5-dihydroxyl-1,4-phenylene pyridodiimidazole] polymer, comprises the following processing steps:
[0050] A. Prepolymerization
[0051] Put 2,5-dihydroxyterephthalic acid (DHTA), tetraaminopyridine trihydrochloride monohydrate (TAP) and polyphosphoric acid (PPA) together into the polymerization kettle, mix well and remove hydrogen chloride gas, Carry out prepolymerization reaction then, obtain prepolymer;
[0052] B. After polycondensation
[0053] The discharge port of the polymerization kettle in step A is connected with the feed port of the twin-screw extruder, and the prepolymer is pressed into the described twin-screw extruder using dry nitrogen, and the prepolymer is extruded in the twin-screw extruder. After completing the post-condensation reaction in the machine, poly[2,5-dihydroxy-1,4-phenylenepyridinediimidazole] polymer was obtained; the reaction time of the prepolymer in the twin-screw extruder was 35min, The twin-s...
PUM
Property | Measurement | Unit |
---|---|---|
elastic modulus | 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