Acrylic Marker Ink Composition for Sedimentation-Free Adhesion
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Solution Overview
Problem
Acrylic marker inks face issues with pigment sedimentation leading to ink stratification and poor adhesion due to pigment sedimentation, especially in cotton-core pens, and require shaking or pressing in valve-type pens for use, resulting in a poor user experience.
Innovation Solution
A marker ink formulation using a first water-based acrylic resin, a pigment paste with a mean diameter less than 150 nm, a cross-linking agent, and additional components like humectants and surfactants, prepared through specific mixing and filtering processes to ensure stability and adhesion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If cotton-core acrylic pens are used to eliminate shaking and pressing operations, then ease of operation is improved, but pigment sedimentation occurs leading to ink stratification and poor adhesion
Solution Approach 1:
The patent changes the particle size parameter of pigment to less than 150 nm, which fundamentally alters the sedimentation behavior. This parameter change prevents pigment aggregation and stratification while maintaining the simplicity of cotton-core pen operation, thereby resolving the contradiction between ease of operation and ink adhesion reliability
Solution Approach 2:
The patent creates a composite ink system combining water-based acrylic resin with specifically controlled nano-pigment particles. This composite formulation ensures uniform dispersion and prevents sedimentation, maintaining both the operational simplicity of cotton-core pens and the reliability of ink adhesion
2Manufacturing precision
If valve-type acrylic pens are used to provide vibrant colors and fast drying, then manufacturing precision and drying performance are improved, but multiple shaking and pressing operations are required resulting in poor user experience
Solution Approach 1:
The patent modifies the ink formulation parameters by using nano-pigment particles (less than 150 nm) and specific resin ratios to achieve fast drying performance without requiring valve-type mechanism. This allows the ink to dry quickly while maintaining ease of operation, resolving the contradiction between drying performance and operational simplicity
Solution Approach 2:
The patent extracts and eliminates the complex valve-type shaking and pressing mechanism while retaining the essential function of fast drying through optimized ink chemistry. This separation of function allows the ink to provide rapid drying without requiring user manipulation, thereby improving ease of operation while maintaining drying performance
3Stability of the object's composition
If pigment particle size is reduced to prevent sedimentation, then ink stability is improved, but color intensity and opacity may be compromised
Solution Approach 1:
The patent uses a composite approach combining water-based acrylic resin with nano-pigment particles to achieve both stability and color intensity. The resin matrix maintains uniform dispersion of nano-pigments while the nano-particles provide high surface area for light absorption, ensuring both ink stability and vibrant color performance
Solution Approach 2:
The patent optimizes the particle size parameter to less than 150 nm, which is small enough to prevent sedimentation but large enough to maintain effective light scattering and absorption. This precise parameter control resolves the contradiction between stability and color intensity by finding the optimal point in the particle size spectrum
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 solution provides a marker ink with improved stability, adhesion, and writing performance by preventing pigment sedimentation and ensuring uniform color dispersion, enhancing the user experience.
Implementation Method 1
a cross-linking agent, and water... the cross-linking agent includes a blocked isocyanate... the cross-linking agent includes a partially methylated amino resin
Implementation Method 2
A mean diameter of a pigment in the pigment paste is less than 150 nm... ensuring uniform color dispersion... preventing pigment sedimentation
Implementation Method 3
the marker ink further comprises a humectant... the humectant is selected from one or a combination of a glycerol, an ethylene glycol, a diethylene glycol, a triethylene glycol
Implementation Method 4
the marker ink further comprises a surfactant... the surfactant accounts for 0.1 to 6 parts
Data Source
AI summary
Embodiments of the present disclosure provide a marker ink and a method for preparing thereof. The marker ink comprises a water-based acrylic resin, a pigment paste, a cross-linking agent, and water. A mean diameter of a pigment in the pigment paste is less than 150 nm.