Resin Particle Weather Resistance via PET and Plant-Resin Composite
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Solution Overview
Problem
The use of plant-derived resins in combination with PET resins for toner binder resins results in reduced strength and weather resistance due to brittleness, leading to decreased durability and environmental concerns.
Innovation Solution
Incorporating polyethylene terephthalate (PET) and a plant-derived resin with a radioisotope 14C concentration of 5.4 pMC or higher, along with an isoindoline pigment, to enhance the weather resistance and environmental responsiveness of resin particles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If plant-derived resin and PET resin are used together as binder resins, then environmental sustainability is improved, but strength and weather resistance are reduced
Solution Approach 1:
The patent specifies precise compositional parameters: plant-derived resin content at 30-70 mass% and PET resin at 30-70 mass%, with the constraint that their combined content is 70-100 mass% of the total binder resin. This parameter optimization resolves the contradiction by finding the optimal balance point where environmental sustainability is improved while maintaining adequate strength.
Solution Approach 2:
The invention creates a composite binder resin system combining plant-derived resin and PET resin in specific proportions. This composite approach leverages the environmental benefits of plant-derived resins while using PET to compensate for strength deficiencies, thereby resolving the contradiction between sustainability and mechanical properties.
2Adaptability or versatility
If plant-derived resin and PET resin are used together as binder resins, then environmental sustainability is improved, but weather resistance is reduced
Solution Approach 1:
The patent optimizes the compositional parameters within specific ranges (plant-derived resin: 30-70 mass%, PET resin: 30-70 mass%) to achieve the desired balance. By controlling these parameters, the invention maintains weather resistance while incorporating sustainable plant-derived materials.
Solution Approach 2:
The composite binder resin system combines the weather resistance properties of PET with the sustainability advantages of plant-derived resins. The specific composition ratios ensure that the PET component provides sufficient weather protection while the plant-derived portion delivers environmental benefits.
3Adaptability or versatility
If plant-derived resin is used as binder resin, then environmental impact is reduced, but durability is reduced
Solution Approach 1:
The patent creates a composite binder resin where plant-derived resin (30-70 mass%) provides environmental sustainability and PET resin (30-70 mass%) ensures durability. This composite structure allows the toner to achieve both reduced environmental impact and adequate service life.
Solution Approach 2:
By optimizing the content ratio of plant-derived resin to PET resin within the specified ranges, the invention achieves the optimal balance between environmental impact reduction and durability maintenance.
Data Source
AI summary
[Summary] To provide resin particles with high weather resistance even when a plant-derived resin and PET are used as binder resins.[Tasks] The Resin particles includes a binder resin and a colorant, wherein the binder resin contains polyethylene terephthalate and a plant-derived resin, wherein the colorant contains an isoindoline pigment, and wherein a radioisotope 14C concentration in the resin particles is 5.4 pMC or higher.