Silane-Treated Pigment Composite for Controllable Color Foundation
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Solution Overview
Problem
Existing color-changeable foundation creams/liquids face issues with weak covering ability, slow color change, and complex production processes, as well as safety concerns and inadequate color effects, particularly with cellulose adhesion, pearl powder, and acid-base indicator technologies.
Innovation Solution
A pre-mixed powder comprising surface-treated titanium dioxide and inorganic pigments, such as iron oxide yellow, red, and black, using methyl triethoxy silanization and octyl triethoxy silanization to enhance dispersibility and compatibility, resulting in a foundation cream/liquid with a controllable and rapid color change, strong covering ability, and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If cellulose adhesion technology is used to achieve color change, then color changing effect is achieved, but covering ability becomes weak
Solution Approach 1:
The patent introduces a silane coupling agent as an intermediary substance that chemically bonds titanium dioxide particles to inorganic pigment particles. This mediator enables strong adhesion between the two components, allowing the titanium dioxide layer to be thick enough for covering ability while still enabling color change through mechanical breakdown during application.
Solution Approach 2:
The patent creates a composite particle structure where titanium dioxide is adhered to inorganic pigment cores through silane coupling. This composite structure combines the covering power of titanium dioxide with the color properties of iron oxide pigments, achieving both strong coverage and effective color change in a single particle system.
2Stability of the object's composition
If firm adhesion is used to prevent particle breakdown, then particle stability is improved, but color change speed becomes slow
Solution Approach 1:
The patent optimizes the adhesion strength parameter through controlled silane coupling, creating a bond that is firm enough to prevent premature breakdown during storage and handling but weak enough to break apart under the mechanical stress of normal application. This parameter optimization enables both particle stability and fast color change.
3Ease of manufacture
If titanium dioxide particle size is reduced to improve adhesion, then adhesion effect is improved, but covering ability deteriorates
Solution Approach 1:
The silane coupling agent enables effective adhesion between titanium dioxide and inorganic pigment particles regardless of particle size. This mediator allows the use of larger titanium dioxide particles (0.5-5 μm) that provide sufficient covering ability while still achieving strong adhesion through the chemical bonding provided by the silane coupling agent.
4Manufacturing precision
If complex production process control is implemented to ensure quality, then product quality is improved, but manufacturing complexity increases
Solution Approach 1:
The silane coupling agent is applied to the titanium dioxide particles in advance during the manufacturing process, creating pre-functionalized particles with optimized adhesion properties. This preliminary action ensures consistent adhesion performance and color change behavior in the final product while simplifying the overall production process by eliminating the need for complex post-processing controls.
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 foundation cream/liquid with rapid and controllable color change, strong covering ability, varied colors, safety, and simplified production, addressing the limitations of previous technologies.
Implementation Method 1
a silane coupling agent, so as to adhere the surface treated titanium dioxide and the surface treated inorganic pigment
Implementation Method 2
surface treated titanium dioxide obtainable by methyl triethoxy silanization of titanium dioxide and surface treated inorganic pigment obtainable by octyl triethoxy silanization of inorganic pigments
Data Source
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AI summary
A foundation cream/liquid with a controllable color change and a preparation method firstly provides a pre-mixed powder for color-changeable foundation cream/liquid, including titanium dioxide and an inorganic pigment, wherein the titanium dioxide is processed with a methyl triethoxy silanization surface treatment; the inorganic pigment is processed with an octyl triethoxy silanization surface treatment. According to the present invention, totally different surface treatments are provided to the titanium dioxide and the inorganic pigment (iron oxide) in the foundation cream/liquid, in such a manner that surface properties of such two kinds of powder are quite different. A color changing effect of the color-changeable foundation cream/liquid prepared with the pre-mixed powder is controllable and rapid; a covering ability is strong; colors are varied; safety and harmlessness are guaranteed; and preparation is simple.