Polyelectrolyte Complex Gel Matrix for Wash-Resistant Hair Styling
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Solution Overview
Problem
Current hair styling methods provide temporary results that last only a few hours or until the hair is washed, failing to maintain style and curl retention under high humidity conditions, necessitating frequent reapplication of styling products.
Innovation Solution
Aqueous hair care compositions containing a polyelectrolyte complex with a gel matrix structure, formed by electrostatic attraction between cationic and anionic polymers, which are applied to hair, dried, and optionally heated to create a wash-resistant polymeric film that retains style and curl for multiple shampoo washes and conditioner rinses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If traditional styling products (hair spray, mousse, gel) are used to achieve temporary hair styling, then hair style can be changed temporarily, but the styling effect disappears after a few hours or one day, especially under high humidity conditions or after washing
Solution Approach 1:
The invention uses a composite polyelectrolyte complex system comprising a cationic polymer and an anionic polymer that form a crosslinked gel matrix structure on hair fibers. This composite material provides durable non-permanent styling by creating a wash-resistant network that maintains hair shape through multiple wash cycles and withstands high humidity conditions, resolving the contradiction between temporary styling and durability.
Solution Approach 2:
The invention changes the physical and chemical parameters of styling products by using polyelectrolyte complexes with specific molecular weights (10,000-1,000,000 Daltons for cationic polymer, 100,000-1,000,000 Daltons for anionic polymer) and controlled charge ratios (0.5-2.0). These parameter changes enable the formation of a stable gel matrix that provides long-lasting styling effects while maintaining flexibility and restylability.
2Duration of action of moving object
If frequent reapplication of styling products is performed to maintain hair style, then styling effect can be sustained, but consumer convenience decreases and economic cost increases
Solution Approach 1:
The polyelectrolyte complex system forms a durable yet flexible gel matrix on hair fibers that persists through multiple wash cycles (at least 3 cycles) and conditioner rinses. This composite material structure eliminates the need for frequent reapplication while maintaining styling effects, thereby improving consumer convenience and reducing economic cost associated with repeated product use.
3Reliability
If a polyelectrolyte complex with gel matrix structure is used to provide durable styling, then wash-resistant retention of hair shape is achieved, but the formulation complexity increases compared to traditional single-polymer systems
Solution Approach 1:
The invention employs a composite polyelectrolyte complex system where a cationic polymer and an anionic polymer interact to form a gel matrix structure. This composite approach achieves wash-resistant styling retention through multiple wash cycles by creating a crosslinked network on hair fibers, while the synergistic interaction between the two polymers actually simplifies the overall formulation compared to using multiple separate products.
Solution Approach 2:
The polyelectrolyte complex acts as an intermediary between the hair fibers and the styling effect. The complex of cationic and anionic polymers forms a gel matrix that mediates the interaction, providing wash-resistant retention while simplifying the formulation into a single usable product rather than requiring multiple separate styling agents.
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 polyelectrolyte complex composition provides durable non-permanent hair styling and wash-resistant retention of shape, lasting through multiple shampoo cycles and conditioner rinses, enhancing styleability, manageability, and reducing frizz while maintaining style memory and ease of restyling.
Implementation Method 1
a polyelectrolyte complex having a gel matrix structure or a mixture of gel matrix and microgel formed by electrostatic attraction
Implementation Method 2
which are applied to hair, dried, and optionally heated to create a wash-resistant polymeric film that retains style and curl
Data Source
Figure 1~2
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AI summary
Disclosed herein is an aqueous hair care composition capable of providing durable nonpermanent hair styling and/or wash-resistant retention of shape of hair fibers comprising a polyelectrolyte complex having a gel matrix structure or a mixture of gel matrix and microgel formed by electrostatic attraction, wherein the polyelectrolyte complex comprises a complex between: (A) about 0.01 wt. % to about 20 wt. % of at least one anionic polymer containing monoacid, diacid, triacid, half-acid/half-ester, acid anhydride functionality, or salts thereof having a molecular weight of from about 100,000 Daltons to about 5000,000 Daltons; and (B) about 0.1 wt. % to about 20 wt. % of at least one cationic or pseudo cationic polymer having a (i) molecular weight range of about 80,000 Daltons to about 5,000,000 Daltons, and (ii) a charge density of less than about 4.0 meg/gram, and wherein, the charge ratio of (B):(A) is more than about 0.70.