Polyarylene Ether Sulfone from Isosorbide for High Temperature Resistance
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Solution Overview
Problem
Current polyarylene ether sulfones and ketones derived from biobased diols lack high temperature resistance and chemical resistance, particularly for applications involving water or food production, and existing manufacturing processes are inefficient in terms of yield and reaction time.
Innovation Solution
Development of a polyarylene ether comprising at least one —SO2— or —CO— group derived from isosorbide, isomannide, or a mixture thereof, combined with a tri- or higher functional compound and a difunctional compound, specifically designed for high temperature resistance and chemical stability, and a process for manufacturing this polymer with improved yield and industrially acceptable reaction time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If polyarylene ether sulfones and ketones are derived from biobased diols, then environmental sustainability is improved, but high temperature resistance and chemical resistance deteriorate
Solution Approach 1:
The patent creates composite polymer structures by combining biobased diols (isosorbide, isomannide) with specific aromatic compounds containing sulfur or oxygen bridges. The resulting polyarylene ether sulfones and ketones integrate renewable biomass components with high-performance aromatic structures, achieving both sustainability and high temperature/chemical resistance through material composition design
Solution Approach 2:
The patent modifies molecular structure parameters by selecting specific aromatic compounds with electron-withdrawing groups and particular structural configurations. These parameter changes in molecular architecture enhance the polymer's thermal and chemical stability while maintaining the biobased origin of the diol component
2Productivity
If existing polyarylene ether manufacturing processes are used, then production is simpler, but manufacturing yield and reaction time efficiency deteriorate
Solution Approach 1:
The patent employs preliminary protection group strategies and pre-formed aromatic compounds with specific functional groups. These preliminary preparations enable more efficient subsequent polymerization reactions, improving overall yield and reducing reaction time despite adding initial process steps
Solution Approach 2:
The patent uses specific aromatic compounds as intermediary building blocks that facilitate the polymerization process. These intermediary structures with reactive functional groups enable controlled polymerization, improving manufacturing efficiency and yield while maintaining processability
Data Source
AI summary
A polyarylene ether comprising in polymerized form A) at least one tri- or higher functional compound and B) isosorbide. isomannide, isoidide or a mixture thereof, wherein the polyarylene ether is a polyarylene ether sulfone or a polyarylene ether ketone, ¢ process for its preparation and its use in the preparation of a coating, film, fiber, foam, membrane or molded article.