Titanium Dioxide Pigment Shell Structure for Consistent Coloring
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Solution Overview
Problem
Existing methods for producing colored titanium dioxide pigments face issues with agglomeration, inefficient dispersion of coloring components, and high energy and time consumption, leading to increased costs and inconsistent coloring effects.
Innovation Solution
A colored pigment particle composed of titanium dioxide with a modified layer containing a coloring component, formed through a method involving an aqueous suspension, layer precursor addition, and coloring component incorporation, allowing for efficient and cost-effective production of a wide range of colors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If coloring component is mixed with titanium dioxide and applied as single coating, then manufacturing process is simplified, but coloring components located far from surface are covered by titanium dioxide particles resulting in reduced coloring effect
Solution Approach 1:
The pigment particle is segmented into a core titanium dioxide region and an outer shell region containing the coloring component. This segmentation ensures that the coloring component is positioned at the surface where it can effectively interact with light, while the titanium dioxide core provides scattering properties. The segmented structure resolves the contradiction by maintaining both manufacturing simplicity and coloring effectiveness.
Solution Approach 2:
The coloring component is nested within a shell that forms the outer layer of the pigment particle, with the titanium dioxide core nested inside. This nested structure ensures that the coloring component is always exposed at the surface regardless of mixing variations, while maintaining a simplified single-step manufacturing process. The nesting principle allows both simplified manufacturing and consistent coloring effect to coexist.
2Manufacturing precision
If ground coating with titanium dioxide is applied followed by further coating with coloring component, then coloring effect is improved, but manufacturing complexity and time consumption increase
Solution Approach 1:
The patent merges the titanium dioxide core and coloring component shell into a single integrated pigment particle structure. This merging eliminates the need for separate ground coating and coloring coating steps, as both functions are combined in one particle. The merging principle resolves the contradiction by achieving consistent coloring effect through the integrated structure while simplifying the manufacturing process to a single application step.
Solution Approach 2:
The colored pigment particle serves multiple functions simultaneously: the titanium dioxide core provides light scattering and hiding power, while the outer shell provides coloring effect. This multi-functionality in a single particle eliminates the need for multiple separate coatings, thereby reducing manufacturing complexity while maintaining effective coloring. The universality principle allows one particle to replace what would traditionally require two separate coating processes.
3Manufacturing precision
If coloring component is incorporated in additional step into composition such as lacquer or paint, then coloring effect is achieved, but time and energy consumption increase
Solution Approach 1:
The coloring component is preliminarily incorporated into the shell of the pigment particle during particle formation, before the pigment is incorporated into the final composition such as paint or lacquer. This preliminary action ensures that the coloring effect is already built into the particle structure, eliminating the need for additional coloring steps later. The preliminary action principle resolves the contradiction by achieving consistent coloring effect while reducing processing time and energy consumption.
4Manufacturing precision
If higher amount of coloring pigment particle is incorporated to achieve desired coloring effect, then coloring effectiveness is improved, but costs increase
Solution Approach 1:
The coloring component is concentrated in the outer shell region of the pigment particle, creating a local quality where the coloring function is localized to the surface area most effective for light interaction. This local concentration ensures maximum coloring effectiveness per unit of coloring component, reducing the total amount needed while maintaining desired coloring effect. The local quality principle resolves the contradiction by optimizing coloring efficiency and reducing material consumption.
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 cost-effective and easily manufactured pigment particle that achieves consistent coloring effects with reduced energy and time requirements, enabling efficient use of coloring components and broad color variability.
Implementation Method 1
providing an aqueous suspension of a titanium dioxide based pigment
Implementation Method 2
forming a layer from the layer precursor modified with the coloring component onto the titanium dioxide based pigment
Data Source
AI summary
The invention relates to a colored pigment particle, a method for obtaining said colored pigment particle, and a composition comprised of said particle. In addition, the invention refers to the use of said colored pigment particle.