Core-Shell Resin Particle for Toner Fixability and Stability
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Solution Overview
Problem
Current toners face challenges in achieving low-temperature fixability while maintaining high-temperature storage stability, especially when using recycled and biomass-derived resins, which can lead to unstable storage in high-temperature environments.
Innovation Solution
A resin particle with a core-shell structure, comprising a core resin with crystalline properties and a shell resin containing polyethylene terephthalate or polybutylene terephthalate derived from recycled materials, combined with a biomass-derived resin, ensuring a mass proportion of at least 30% biomass content, enhances low-temperature fixability and high-temperature storage stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If recycled PET or PBT resin is used as binder resin to reduce environmental impact, then environmental friendliness is improved, but storage stability in high-temperature environments deteriorates
Solution Approach 1:
The patent uses a composite resin system combining recycled PET/PBT with biomass-derived resin containing specific alcohol and acid components. This composite approach maintains the environmental benefits of recycled materials while adding thermal stability through the specific chemical composition (linear aliphatic alcohol with 2-4 carbon atoms and linear aliphatic acid with 10-12 carbon atoms), resolving the contradiction between environmental friendliness and high-temperature storage stability.
Solution Approach 2:
The patent modifies the chemical parameters of the biomass-derived resin by specifying precise molecular weight ranges (alcohol: 2-4 carbon atoms, acid: 10-12 carbon atoms) to optimize both environmental performance and thermal stability. This parameter optimization allows the resin to maintain stability at high temperatures while still being derived from renewable sources, thus resolving the storage stability issue.
2Object-affected harmful factors
If biomass-derived resin is used to reduce environmental impact, then environmental friendliness is improved, but low-temperature fixability deteriorates
Solution Approach 1:
The patent combines biomass-derived resin with specific alcohol and acid components in a composite resin system. This composite structure enables the toner to achieve low-temperature fixability while maintaining environmental friendliness, as the specific chemical components (linear aliphatic alcohol with 2-4 carbon atoms and linear aliphatic acid with 10-12 carbon atoms) provide appropriate melting characteristics without compromising the renewable nature of the resin.
Solution Approach 2:
The patent optimizes the molecular parameters of the biomass-derived resin by specifying precise carbon atom counts (alcohol: 2-4, acid: 10-12) to control melting point and fixability temperature. This parameter control ensures low-temperature fixability is achieved while maintaining the environmental benefits of biomass-derived materials.
3Loss of substance
If recycled toner with biomass-derived resin is developed to conserve resources, then resource conservation is improved, but storage stability in high-temperature environments deteriorates
Solution Approach 1:
The patent recovers and reuses recycled PET and PBT materials in the form of binder resin, converting waste plastic resources into functional toner components. This recovery process conserves resources by giving recycled materials a second life, while the addition of specifically designed biomass-derived resin components ensures the final product maintains high-temperature storage stability, thus resolving the contradiction between resource conservation and storage stability.
Solution Approach 2:
The patent creates a composite resin system that combines recycled PET/PBT with biomass-derived resin containing specific alcohol and acid components. This composite structure maintains the resource conservation benefits of using recycled materials while the specific chemical composition (linear aliphatic alcohol with 2-4 carbon atoms and linear aliphatic acid with 10-12 carbon atoms) provides the necessary thermal stability for high-temperature storage.
Data Source
AI summary
A resin particle contains a resin B containing a component derived from at least one of polyethylene terephthalate or polybutylene terephthalate and a biomass-derived resin C containing a linear aliphatic alcohol with 2 to 4 carbon atoms and a linear aliphatic acid with 10 to 12 carbon atoms, wherein the resin particle has a core shell structure of a core resin and a shell resin, the core resin contains a crystalline resin, and the proportion of the sum of the resin B and the resin C to 100 percent by mass of the resin particle is 30 or greater percent by mass.