Coloring Silicate Mineral Particles via Metal Salt Immersion
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Solution Overview
Problem
Existing methods for preparing colored silicate mineral particles, such as those used in industrial applications, require specific synthesis protocols for each color and cannot modify the color of the particles once synthesized, limiting color diversity and stability.
Innovation Solution
A method involving the immersion of talcose compositions comprising specific silicate mineral particles in a solution containing transition metals, lanthanides, or actinides to adjust and stabilize the color, allowing for a wide range of colors and high chemical stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If specific synthesis protocols are used for each color, then color stability is improved, but device complexity and manufacturing time increase
Solution Approach 1:
A single post-synthesis immersion method is developed that can produce multiple colors (red, green, blue, violet, pink, beige) by varying only the metal salt used in the coloring solution, rather than requiring separate synthesis protocols for each color. The same base silicate mineral particle composition serves as a universal substrate for all color variations.
Solution Approach 2:
The base silicate mineral particles are pre-synthesized with a standardized composition and structure, preparing them in advance for the coloring step. This preliminary preparation of uniform particles enables subsequent rapid and consistent coloration through immersion, separating the complex particle formation from the simpler color application.
2Reliability
If color is determined by starting reagents, then color stability is improved, but adaptability decreases
Solution Approach 1:
Instead of determining color during the complex synthesis process by selecting specific starting metal salts, the invention inverts the approach by synthesizing color-neutral or white base particles first, then applying color through a separate post-synthesis immersion step. This allows the base particles to remain adaptable while the coloring step provides stability and diversity.
Solution Approach 2:
The invention changes the parameter being controlled from starting reagent composition to post-synthesis treatment conditions. By varying parameters such as the type of metal salt, concentration, immersion time, and temperature in the coloring step, a wide range of colors can be achieved while maintaining consistent base particle properties that ensure stability.
3Manufacturing precision
If synthesis parameters are changed for each color, then color accuracy is improved, but productivity decreases
Solution Approach 1:
The manufacturing process is segmented into two independent stages: (1) synthesis of color-neutral base silicate particles using standardized parameters, and (2) coloration through immersion in metal salt solutions. This segmentation allows parallel processing where base particles can be produced continuously while coloring is performed separately, significantly improving overall productivity without sacrificing color accuracy.
Solution Approach 2:
The base silicate mineral particles serve as an intermediary substrate that decouples particle formation from color determination. This intermediary allows the coloring step to be optimized independently for speed and accuracy, as the base particles provide a consistent platform that rapidly absorbs metal ions without requiring complex synthesis adjustments.
4Area of stationary object
If natural talc is ground into fine particles, then surface area increases, but color is lost
Solution Approach 1:
Instead of starting with colored natural talc and grinding it (which would destroy the color), the invention performs preliminary action by synthesizing color-neutral base particles first, then applying color through immersion after the particles have already been ground to the desired fine size. This ensures both high surface area and color retention can be achieved.
Solution Approach 2:
The invention changes the timing parameter of color application from pre-grinding to post-grinding. By implementing the coloring step after particle size reduction, the fine particles gain high surface area while the coloring process subsequently imparts stable coloration that is not compromised by the grinding mechanism.
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
Enables the rapid and durable adjustment of color properties in silicate mineral particles, achieving stable and visible coloration across the visible spectrum, suitable for industrial applications like cosmetics and paints.
Implementation Method 1
a method involving the immersion of talcose compositions comprising specific silicate mineral particles in a solution containing transition metals, lanthanides, or actinides to adjust and stabilize the color
Implementation Method 2
The synthesized T.O.T.-swelling T.O.T. interlayer particles can have different colors depending on the metal salt used in the starting gel containing silicon and/or germanium and metal
Data Source
AI summary
A method for preparing a composition including silicate mineral particles that have coloring properties in which a talcose composition, including phyllosilicate mineral particles chosen from the group formed: from the particles having the chemical formula: ((SixGe1-x)4 M3O10 (OH)2, the particles having at least one interlayer space and having the chemical formula: (SixGe1-x)4 M3-ε O10 (OH)2, (M′m+)ε′.nH2O: -M having the formula Mgy(1)Coy(2)Zny(3)Cuy(4)Mny(5) Fey(6)Niy(7)Cry(8); -M′m+ designating at least one interlayer cation, the silicate mineral particles having a thickness of less than 100 nm and of which the largest dimension is less than 10 μπι, is brought into contact with a dye solution, including dye cations, of at least one element chosen from the transition metals, the lanthanides and the actinides. The composition obtained by this method is also described.