Hair Bleaching Composition With Biodegradable Complexing Agents
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Solution Overview
Problem
Existing hair bleaching agents cause significant damage to hair due to oxidative breakdown and require multiple applications to achieve desired lightening, while using non-biodegradable complexing agents like HEDP and EDTA, and they fail to optimize bleaching power and temperature control.
Innovation Solution
A hair treatment agent containing a biodegradable complexing agent of formula (I), an activator from amino acids or protein hydrolyzates, and a radical scavenger, which enhances bleaching power and reduces hair damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If conventional bleaching agents (hydrogen peroxide with HEDP or EDTA) are used to lighten hair, then bleaching power is achieved, but hair damage increases and biodegradability is poor
Solution Approach 1:
The patent changes the chemical parameters by replacing conventional HEDP/EDTA complexing agents with biodegradable alternatives (glutamic acid derivatives, succinic acid derivatives) and adjusts the oxidant system to use persulfate salts instead of or in combination with hydrogen peroxide. This parameter change maintains bleaching effectiveness while reducing hair damage and improving biodegradability.
Solution Approach 2:
The patent employs composite material strategies by combining multiple components: biodegradable complexing agents (formula I compounds), activators (amino acids, protein hydrolyzates), oxidants (persulfate salts, hydrogen peroxide), and optional stabilizers. This composite approach synergistically achieves effective bleaching while minimizing hair damage and ensuring environmental compatibility.
2Manufacturing precision
If multiple bleaching applications are performed to achieve desired lightening, then color change is improved, but cumulative hair damage increases
Solution Approach 1:
The patent modifies the chemical action parameters by using persulfate salts which provide controlled, progressive oxidation. The biodegradable complexing agents also modulate the reaction kinetics, allowing effective color change in fewer applications while reducing cumulative oxidative damage to hair proteins and lipids.
3Temperature
If HEDP or EDTA are used as complexing agents to stabilize hydrogen peroxide, then temperature control is improved, but biodegradability deteriorates
Solution Approach 1:
The patent replaces non-biodegradable complexing agents (HEDP, EDTA) with biodegradable alternatives including glutamic acid derivatives (N,N-dicarboxymethylglutamic acid) and succinic acid derivatives. These biodegradable agents maintain the necessary metal complexation and temperature control functions while being environmentally compatible and readily degraded.
4Manufacturing precision
If longer application times are used to lighten dark hair, then color change is improved, but oxidative damage to structural components increases
Solution Approach 1:
The patent changes the oxidizing system from relying solely on hydrogen peroxide to using persulfate salts (ammonium peroxodisulfate, potassium peroxodisulfate, sodium peroxodisulfate) either alone or in combination. This parameter change provides more controlled, sustained oxidation that achieves effective lightening of dark hair in shorter application times, thereby reducing cumulative oxidative damage to keratin and other structural components.
Solution Approach 2:
The biodegradable complexing agents act as intermediaries that modulate the oxidation process. They complex metal ions to control the release and reactivity of oxidizing species, enabling effective color change while protecting hair structural components from excessive oxidative damage during the treatment process.
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 agent provides superior bleaching performance with reduced hair damage and improved temperature control, using ecologically friendly ingredients.
Implementation Method 1
The complexing agents are, among other things, to prevent breakdown of the hydrogen peroxide by metal ions accumulated in the hair fibers
Implementation Method 2
The oxidizing agents contained in hair-bleaching agents are capable of lightening hair fibers by oxidative destruction of the hair's own melanin dye
Implementation Method 3
at least one activator (b) of the group of amino acids, protein hydrolyzates, and radical scavengers
Data Source
AI summary
An agent for oxidatively changing the color of keratin fibers, such as human hair, may include at least one complexing agent of the general formula (I); at least one activator from the group of amino acids, protein hydrolyzates, and radical scavengers; and at least one oxidant.