Anionic Polymer Composition for Hair Styling Gel Distribution and Hold
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Solution Overview
Problem
Existing styling gels have difficulty distributing evenly on hair, provide insufficient hold, and are prone to disintegration over time, leading to unsatisfactory long-lasting styling results.
Innovation Solution
A composition combining specific anionic associative polymers, fixing polymers, and distinct anionic polymers, which enhances styling performance by providing strong fixing power, durability, and resistance to mechanical friction while maintaining ease of application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If strong fixing styling gels are used to provide strong fixing power, then fixing strength is improved, but distribution ease and spreading on hair deteriorate
Solution Approach 1:
The patent applies parameter changes by carefully controlling the molecular weight, charge density, and composition ratios of the anionic polymers used in the gel formulation. This allows the gel to achieve optimal balance between fixing strength and distribution ease through quantitative adjustment of polymer properties rather than qualitative changes in formulation approach
Solution Approach 2:
The patent uses composite materials by combining multiple anionic polymers with different molecular weights and charge densities in specific ratios. This composite approach creates a synergistic effect where the mixture provides both strong fixing power and improved distribution characteristics that individual polymers could not achieve alone
2Ease of operation
If thickening polymers are added to improve usage qualities, then ease of application is improved, but film durability and fixing hold deteriorate
Solution Approach 1:
The patent applies parameter changes by precisely controlling the charge density and molecular weight of the anionic polymers, along with the pH and ionic strength of the formulation. These parameter adjustments allow the gel to maintain film integrity and durability while achieving good ease of application, resolving the trade-off between usability and reliability
Solution Approach 2:
The patent applies local quality by creating regions of different polymer concentrations and charge densities within the gel structure. This allows different parts of the formulation to perform different functions: some regions provide ease of application while others ensure film durability and long-lasting hold
3Duration of action of stationary object
If gel formulation is made to provide long-lasting hold, then durability is improved, but resistance to mechanical friction deteriorates
Solution Approach 1:
The patent uses composite materials by formulating a mixture of anionic polymers with complementary properties. The composite gel structure provides both long-lasting hold through strong adhesion to hair and resistance to mechanical friction through a cohesive film network that withstands external forces
Data Source
AI summary
The present invention relates to a cosmetic composition comprising: (i) one or more anionic associative polymers (i) comprising at least one unit of formula (I) and at least one unit of formula (II) below: (ii) one or more anionic fixing polymers comprising at least one unit of formula (III) and at least one unit of formula (IV) below: (iii) one or more anionic polymers, different from the anionic associative polymers (i) and from the anionic fixing polymers (ii), comprising: at least one (meth)acrylic acid monomer, at least one C1-C4 alkyl (meth)acrylate monomer, at least one (meth)acrylic ester monomer with a hydrophobic chain.