Fluid Hair Dye Formulation for Efficient Mixing and Packaging
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Solution Overview
Problem
The complex and energy-intensive process of manufacturing oxidative hair dyes, particularly the high energy requirements for emulsification and cooling, as well as the challenging packaging and application of alkali dye cremes, which are viscous and difficult to mix with hydrogen peroxide solutions, lead to inefficiencies in the hair dyeing process.
Innovation Solution
A formulation comprising water, oxidation dye precursors, alkalizing agents, tensides, cross-linked copolymers of acrylic acid, and saturated alkanols, with a specific weight ratio that excludes oxidants, allowing for a more fluid and efficient mixing with hydrogen peroxide to create a suitable hair dye application mixture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a creme carrier is used to work into oxidative precursors and alkalizing agents, then homogeneous distribution and adequate dwell time are achieved, but the manufacture becomes complex and energy-intensive due to emulsification and cooling processes
Solution Approach 1:
The patent changes the physical state parameter of the dye composition from a viscous creme to a more fluid gel or liquid formulation. This is achieved by modifying the carrier system and ingredient composition, allowing the product to flow more easily while still providing homogeneous distribution when applied. The fluid formulation eliminates the need for energy-intensive emulsification and cooling processes while maintaining adequate dwell time on the hair.
2Ease of operation
If the dye creme has higher viscosity to remain on hair without dripping, then application stability is improved, but mixing with hydrogen peroxide becomes difficult and time-consuming
Solution Approach 1:
The patent creates a dynamic viscosity system where the formulation adapts its flow properties based on the application stage. The gel or liquid formulation maintains sufficient viscosity to stay on the hair during application but allows for rapid mixing with hydrogen peroxide when combined. This dynamic behavior enables both stable application and efficient mixing, resolving the contradiction between application stability and mixing speed.
3Ease of manufacture
If alkali dye creme is packaged in flexible aluminum tubes, then packaging is achieved, but energy and raw material consumption increase
Solution Approach 1:
The patent changes the rheological parameters of the dye formulation from high-viscosity creme to lower-viscosity gel or liquid. This parameter change enables the product to be packaged in simpler, more energy-efficient containers such as plastic bottles instead of flexible aluminum tubes. The reduced viscosity allows the formulation to flow and be filled more easily, reducing both energy consumption and raw material usage in the packaging process.
4Productivity
If dye creme and developer preparation are mixed by hand, then application mixture is produced, but homogeneous mixing is difficult to achieve within the required time
Solution Approach 1:
The patent modifies the rheological parameters of both the dye formulation and developer preparation to optimize their mixing characteristics. The gel or liquid formulation has flow properties that facilitate rapid and homogeneous mixing with the developer when combined, achieving uniform distribution of oxidative precursors throughout the application mixture within the required time frame. This parameter optimization enables effective hand mixing while ensuring homogeneous color results.
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
This formulation reduces the energy consumption and simplifies the manufacturing and packaging of oxidative hair dyes, enabling a more efficient and cost-effective application process while maintaining effective color results.
Implementation Method 1
at least one cross-linked copolymer composed of acrylic acid and non-ethoxylated esters of acrylic acid with linear C10-C30 monoalcohols as monomers
Implementation Method 2
at least one tenside
Implementation Method 3
under the influence of oxidants or atmospheric oxygen, the actual dyes per se
Data Source
AI summary
The subject matter of the present disclosure constitutes agents for oxidative hair dyeing, containing from about 78-about 95 wt. % water, oxidation dye precursor(s), alkalizing agents, from about 0.1-about 2 wt. % anionic, zwitterionic or amphoteric tenside, from about 0.05-about 2 wt. % of a cross-linked copolymer from acrylic acid and non-ethoxylated esters of acrylic acid having linear C10-C30 monoalcohols, wherein only small quantities of, if any, linear, saturated alkanols having two or three hydroxy groups and 2 to 8 carbon atoms are contained in the alkyl group, also no saturated or unsaturated non-alkoxylated alkanols having a hydroxy group and from about 1 to about 50 carbon atoms in the alk(en)yl group, no saturated or unsaturated alkanecarboxylic acids with from about 1 to about 50 carbon atoms and no oxidants are included in the agent.