Bio-based Toner Resin via One-Pot Polyester Synthesis
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Solution Overview
Problem
The majority of polymeric materials are based on fossil fuels, leading to increased greenhouse gas emissions and non-degradable waste accumulation, prompting the need for sustainable alternatives in toner production.
Innovation Solution
A sustainable toner resin is developed using a bio-based polyester derived from rosin acid, cyclic alkylene carbonate, and aromatic carboxylic acid, with optional wax and colorant, achieving a sustainability content of at least 70% through a one-pot process that reduces complexity and cost while maintaining xerographic performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If fossil fuel-based polymeric materials are used in toner production, then manufacturing cost and process simplicity are maintained, but environmental harm increases due to greenhouse gas emissions and non-degradable waste accumulation
Solution Approach 1:
The patent changes the chemical composition parameters by using bio-based materials (rosin acid, cyclic alkylene carbonate, aromatic carboxylic acid, polyol) instead of traditional fossil fuel-based polymers. This substitution maintains toner performance while reducing environmental harm through biodegradability and renewable sourcing, resolving the contradiction between environmental friendliness and manufacturing feasibility
Solution Approach 2:
The invention creates a composite polyester resin system combining multiple bio-based components (rosin acid, cyclic alkylene carbonate, aromatic carboxylic acid, and polyol) to achieve the desired balance between sustainability and manufacturability. This composite approach allows optimization of both environmental properties and processing characteristics
2Productivity
If traditional multi-step toner production processes are used, then manufacturing precision is maintained, but production time and complexity increase
Solution Approach 1:
The patent merges multiple traditional production steps into a single reactor process where all components (rosin acid, cyclic alkylene carbonate, aromatic carboxylic acid, polyol) are combined and reacted simultaneously to form the polyester resin. This consolidation reduces production time and complexity while maintaining toner performance quality through controlled reaction conditions
Solution Approach 2:
The invention performs preliminary formulation design by selecting specific bio-based monomers and additives that will self-assemble into the desired toner structure during the single-step polymerization. This preliminary planning ensures that the simplified process still produces toner meeting performance specifications
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The bio-based toner resin achieves high sustainability content with reduced environmental impact and production costs, while maintaining benchmark xerographic performance, addressing the challenges of fossil fuel-based materials.
Implementation Method 1
preparing a rosin diol from the reaction products between a rosin acid and a cyclic alkylene glycol
Implementation Method 2
reacting said rosin diol with 2-ethyl-2-butyl 1,3 propanediol and terephthalic acid in said reactor to form said sustainable polyester polymer
Data Source
AI summary
The present disclosure describes a sustainable toner.