Water-Based Clear Ink Composition for Stable Ejection and Abrasion Resistance
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Solution Overview
Problem
Existing ink technologies that utilize bio-derived components face limitations in component selection freedom, leading to degraded characteristics such as ejection stability and fixability, while also increasing environmental impact.
Innovation Solution
A water-based clear ink composition using a (meth)acrylic resin with specific properties, including a diblock copolymer structure and wax emulsion, which enhances abrasion resistance and ejection stability while maintaining environmental compatibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If bio-derived components are used to reduce environmental impact, then environmental compatibility is improved, but component selection freedom is narrowed and ink characteristics are degraded
Solution Approach 1:
The patent changes the chemical structure parameters of the acrylic resin by incorporating specific functional groups (carboxyl, hydroxyl, amine groups) and controlling molecular weight (5,000-30,000) and glass transition temperature (70°C or higher). These parameter changes enable the resin to maintain excellent ejection stability and film formation properties while being derived from renewable resources, thus resolving the contradiction between environmental compatibility and performance.
Solution Approach 2:
The patent creates a composite ink formulation combining the bio-derived acrylic resin with wax emulsion and specific surfactants. This composite approach allows the resin to provide environmental benefits while the wax and surfactant components compensate for any performance deficiencies, achieving both reduced environmental impact and maintained ink characteristics.
2Object-affected harmful factors
If component selection is restricted to bio-derived components, then environmental compatibility is improved, but ink characteristics such as ejection stability and fixability are degraded
Solution Approach 1:
The patent specifies precise parameter ranges for the acrylic resin: molecular weight of 5,000-30,000, glass transition temperature of 70°C or higher, and controlled ratios of functional groups. These parameter optimizations ensure the resin maintains appropriate viscosity and surface tension for stable inkjet ejection while being bio-derived, thus improving ejection stability without sacrificing environmental compatibility.
3Object-affected harmful factors
If component selection is restricted to bio-derived components, then environmental compatibility is improved, but ink characteristics such as color development and glossiness are degraded
Solution Approach 1:
The patent formulates a composite system where the bio-derived acrylic resin works synergistically with wax emulsion and specifically selected surfactants. The wax component enhances glossiness and color development, while the surfactant system optimizes ink spreading and fixation on the substrate. This composite approach maintains color reproducibility and glossiness while using bio-derived components.
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 ink composition achieves improved abrasion resistance, ejection stability, and reduced environmental footprint by utilizing a (meth)acrylic resin with a high biomass content and wax emulsion, ensuring stable dispersion and emulsification.
Implementation Method 1
the (meth)acrylic resin has a carboxy group neutralized with an alkali and is emulsified in water
Implementation Method 2
the (meth)acrylic resin is a diblock copolymer including a polymer block A and a polymer block B, the polymer block A of the (meth)acrylic resin is a substantially water-insoluble polymer block
Implementation Method 3
the (meth)acrylic resin has a carboxy group neutralized with an alkali and is emulsified in water
Implementation Method 4
a wax emulsion which enhances abrasion resistance and ejection stability
Data Source
AI summary
An ink jet ink composition is provided which contains water, a (meth)acrylic resin, and a wax emulsion and which is a water-based clear ink, and the (meth)acrylic resin described above satisfies predetermined requirements.