Keratin Fiber Dyeing Composition with Stabilized Hydrogen Peroxide
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Solution Overview
Problem
Aqueous hydrogen peroxide-containing compositions used in bleaching and dyeing processes suffer from decomposition over time, particularly in warm climates or less than ideal storage conditions, leading to reduced performance and stability issues.
Innovation Solution
A cosmetic product comprising compositions A and B, where A includes alkalizing agents and direct dyes, and B has a pH of 1 to 6 with hydrogen peroxide and additives like orthodiphenols and imidazolidin-2,4-diones, combined to form a ready-to-use mixture with a pH of 7 to 12 for dyeing keratin fibers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If hydrogen peroxide-containing compositions are stored for extended periods, then shelf life is improved, but chemical stability deteriorates due to decomposition
Solution Approach 1:
The patent introduces stabilizing agents (such as chelating agents, antioxidants, and pH buffers) as intermediary substances that mediate between hydrogen peroxide and decomposing factors. These agents protect hydrogen peroxide from decomposition by sequestering metal ions, preventing radical formation, or maintaining optimal pH conditions, thereby extending shelf life without sacrificing chemical stability.
Solution Approach 2:
The patent modifies storage parameters including pH control (maintaining acidic to neutral pH), temperature considerations, and concentration adjustments. By optimizing these parameters and using stabilizing formulations, the composition maintains chemical stability over extended storage periods while retaining dyeing performance.
2Power
If hydrogen peroxide concentration is increased to improve dyeing performance, then coloring intensity is improved, but decomposition rate increases
Solution Approach 1:
Stabilizing agents act as intermediaries that allow higher hydrogen peroxide concentrations to be formulated without proportionally increasing decomposition. These agents protect the peroxide, enabling strong dyeing performance while mitigating the expected increase in decomposition rate.
Solution Approach 2:
The patent creates composite formulations combining hydrogen peroxide with stabilizing agents, chelating agents, and other protective components. This composite approach allows the system to achieve high dyeing performance through elevated peroxide levels while the integrated stabilizers prevent corresponding increases in decomposition.
3Ease of operation
If storage temperature is increased to improve product availability, then accessibility is improved, but decomposition progresses faster
Solution Approach 1:
The patent formulates the composition to be stable across a broader temperature range by incorporating temperature-resistant stabilizers and optimizing pH buffers. This allows the product to be stored in warmer environments (improving availability in tropical regions) without experiencing accelerated decomposition that would normally occur at higher temperatures.
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 enhances the chemical and physical stability of hydrogen peroxide, resulting in more intense dyeing results with improved wash fastness and consistent performance over time.
Implementation Method 1
the hydrogen peroxide tends to undergo a decomposition process during storage whereby the available active oxygen in the composition decreases over time
Implementation Method 2
a composition A comprising one or more alkalizing agent(s) and one or more direct dye(s)... mixing the compositions to yield a ready-to-use composition having a pH in the range of 7 to 12
Implementation Method 3
aqueous, hydrogen peroxide-containing compositions are well known in the art. These compositions are essential components in many industrial and artisanal processes. For example, bleaching or dyeing of solid substrates require the presence of oxidizing compositions.
Data Source
AI summary
A cosmetic product, including a composition A containing one or more alkalizing agents and one or more direct dyes, and an aqueous composition B having a pH in a range of 1 to 6. The aqueous composition B contains hydrogen peroxide, and one or more compounds selected from the following groups:where R1, R2, and R3 are independently selected from H and CH3,2) one or more orthodiphenols or a derivative or salt thereof, and3) one or more imidazolidin-2,4-diones or a derivative or salt thereof.