Anionic Cationic Polymer Composition for Hair Styling
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Solution Overview
Problem
Conventional strong-fixing styling gels have suboptimal uptake, insufficient fixing power, and leave residues on hair, scalp, and clothes, limiting their durability and performance.
Innovation Solution
A composition combining anionic associative polymers, anionic fixing polymers, and cationic fixing polymers, specifically copolymers derived from acrylic or methacrylic esters with units of formulas (I), (II), (III), and (IV), which provide improved working qualities, distribution, and long-lasting hold without visible residue.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If thickening polymers are added to styling gels to improve working qualities and distribution, then ease of operation is improved, but fixing power becomes insufficient
Solution Approach 1:
The patent uses a composite polymer system combining three distinct polymer types: thickening polymer (for working qualities), fixing polymer (for strong fixing), and associative polymer (for hold and stability). This composite approach allows each polymer to perform its specialized function without compromising the others, resolving the contradiction between ease of operation and fixing power.
2Strength
If fixing polymer concentration is increased to improve fixing power, then strength is improved, but residue visibility increases
Solution Approach 1:
The patent changes the chemical parameters of the fixing polymer by using specific copolymers with defined monomer compositions (acrylic/methacrylic esters with vinyllactam units). This allows achieving strong fixing power through optimized molecular structure rather than simply increasing concentration, thereby reducing residue visibility.
3Strength
If styling gel formulation is optimized for strong fixing, then fixing power is improved, but durability of hairstyle over time becomes insufficient
Solution Approach 1:
The patent merges the functions of multiple polymers into a single formulation: the thickening polymer provides initial working qualities, the fixing polymer delivers strong fixing power, and the associative polymer ensures long-term hold and stability. This synergistic combination resolves the contradiction between strong fixing and durability over time.
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 composition offers enhanced uptake, distribution, and long-lasting styling performance with reduced residue, ensuring improved fixing power and durability of hairstyles.
Implementation Method 1
The composition comprises one or more anionic associative polymers, one or more anionic fixing polymers and one or more cationic fixing polymers
Implementation Method 2
These polymers allow the formation of a coating film on the hair, thus providing form retention of the hairstyle
Data Source
AI summary
The present invention relates to a composition comprising one or more particular anionic associative polymers, one or more particular anionic fixing polymers and one or more cationic fixing polymers. The present invention also relates to the use of the abovementioned composition for styling keratin fibres, preferably the hair. Finally, the invention relates to a process for treating keratin fibres, preferably the hair, using the abovementioned composition.