Calcium-Titanium Composite Oxide Pigment for Natural Concealing
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Solution Overview
Problem
Existing cosmetics using titanium oxide pigments face issues with white cast phenomenon and low concealing strength, and there is a need for a substitute that provides a natural finish and high concealing strength.
Innovation Solution
A pigment comprising calcium-titanium composite oxide particles with specific speckled marks and a true density of 3500 kg/m³ to 3790 kg/m³, which preferentially transmits light in the warm color region and has high concealing strength, produced through a method involving an aqueous solution reaction, calcium removal treatment, and firing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If titanium oxide pigment with high concealing strength is used, then concealing strength is improved, but white cast phenomenon occurs and natural finish is deteriorated
Solution Approach 1:
The patent changes the material parameter from pure titanium oxide to calcium-titanium composite oxide, which has different optical properties. This composite oxide maintains high concealing strength while reducing the white cast effect, achieving a natural finish. The specific composition ratio and particle characteristics are optimized to control light scattering and transmission.
Solution Approach 2:
The patent uses a composite material system consisting of calcium-titanium composite oxide particles with specific characteristics (particle size, shape, internal structure). This composite approach combines the benefits of both calcium oxide and titanium oxide, achieving a balance between concealing strength and natural appearance by controlling light interaction with the skin.
2Strength
If large amount of pigment is added to achieve sufficient concealing strength, then concealing strength is improved, but usability of cosmetic deteriorates
Solution Approach 1:
The patent optimizes the particle parameters of the pigment, specifically the particle size distribution and shape characteristics. By controlling these parameters, the pigment achieves high concealing strength at lower concentrations, improving cosmetic usability. The specific particle characteristics enhance light scattering efficiency, reducing the need for large amounts of pigment.
3Object-generated harmful factors
If rutile-type titanium oxide with specific shape is used to balance tinting and concealing strengths, then white cast is reduced, but manufacturing complexity increases
Solution Approach 1:
The patent changes the material composition from pure titanium oxide to calcium-titanium composite oxide, which naturally provides better light scattering properties. This compositional change simplifies the manufacturing process compared to shaping titanium oxide particles into specific forms, while still achieving reduced white cast and improved natural finish.
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 calcium-titanium composite oxide pigment achieves a natural finish by scattering light in the warm color range, providing high concealing strength and UV-blocking properties, suitable for cosmetics and other applications.
Implementation Method 1
the pigment has a warm color light-transmitting effect... by scattering light in the warm color range inside the skin
Implementation Method 2
providing high concealing strength and UV-blocking properties
Data Source
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AI summary
Provided are: a pigment through which light in a warm color region can pass preferentially and which has high hiding power and is mainly used in cosmetic applications; a method for producing the pigment; and a method for using the pigment. The pigment comprises particles each containing a calcium-titanium composite oxide as a main component, in which it is confirmed that regions each having a paler color than the color of a region surrounding thereof are scattered in a dot-like form in the particles when the particles of the calcium-titanium composite oxide in the pigment are observed in a transmission electron microscopic image at a magnification of 100,000x, and the true density of the pigment is 3500 kg/m3 to 3790 kg/m3 , inclusive.