Amorphous Polyester Resin with Sulfo Groups for Toner
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current toner resins face challenges in achieving both environmental friendliness and durability, as plant-derived resins lack mechanical strength and stability, while fossil fuel-based resins contribute to global warming and resource depletion.
Innovation Solution
Development of an amorphous polyester resin with a sulfo group content of 2 mol% to 10 mol% and an environmentally friendly component content of 40% to 80% by mass, using recycled PET or PBT and plant-derived materials, forming a core-shell structure for improved durability and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If plant-derived resins are used as binder resin, then environmental friendliness is improved, but mechanical strength and stability deteriorate
Solution Approach 1:
The invention uses composite materials by combining plant-derived polyester resin (environmentally friendly) with recycled PET or PBT (fossil fuel-based but sustainable). This composite approach allows the resin to achieve both environmental friendliness (40-80 mass% plant-derived content) and adequate mechanical strength through the synergistic properties of the mixed composition.
Solution Approach 2:
The invention changes the compositional parameters by controlling the content of plant-derived components within a specific range (40-80 mass%) and sulfo group content (2-10 mol%). By optimizing these parameters, the resin achieves a balance between environmental friendliness and mechanical properties, resolving the contradiction between being eco-friendly and having sufficient strength.
2Strength
If fossil fuel-based resins are used as binder resin, then mechanical strength is improved, but environmental friendliness deteriorates
Solution Approach 1:
The invention changes the compositional parameters by limiting fossil fuel-based components (recycled PET or PBT) to specific content ranges (20-60 mass%) while ensuring plant-derived content is 40-80 mass%. This parameter optimization allows retention of mechanical strength from fossil fuel components while prioritizing environmental friendliness through dominant plant-derived content.
Solution Approach 2:
The invention applies the discarding and recovering principle by using recycled PET or PBT instead of virgin fossil fuel-based resins. This approach maintains the mechanical strength benefits of polyester resins while improving environmental friendliness through waste utilization and reduced reliance on virgin fossil fuel resources.
3Reliability
If sulfo group content is increased, then stability of shell material is improved, but manufacturing complexity increases
Solution Approach 1:
The invention optimizes the sulfo group content parameter within a moderate range (2-10 mol%), avoiding excessive addition while achieving sufficient stability improvement. This balanced parameter selection provides adequate shell material stability without requiring overly complex manufacturing processes or purification steps.
Data Source
AI summary
An amorphous polyester resin includes an environmentally friendly component. An environmentally friendly component content of the amorphous polyester resin is 40% by mass or greater and 80% by mass or less. The amorphous polyester resin is a sulfo group-containing amorphous polyester resin. A sulfo group content of the sulfo group-containing amorphous polyester resin is 2 mol % or greater and 10 mol % or less.