Hair Fixative Co-Polymer for Sustained Fragrance Release
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Solution Overview
Problem
Hair styling fixative systems face challenges in maintaining long-lasting fragrance delivery without compromising hold or humidity resistance, as traditional fragrance deposition interferes with fixative performance and is often lost quickly.
Innovation Solution
A hair styling composition incorporating a hair fixative co-polymer with a combination of acid-containing, hydrophobic, and optional hydrophilic monomers, neutralized to a specific extent, which encapsulates fragrances within a film that slowly releases them upon moisture contact, ensuring sustained scent while maintaining style and humidity resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If fragrance is deposited on hair using conventional emulsion methods, then pleasant fragrance during application is achieved, but the fragrance is lost quickly and the fixative's ability to hold hair and resist humidity is compromised
Solution Approach 1:
The patent uses a film-forming polymer as an intermediary carrier that encapsulates the fragrance. This polymer film is deposited on the hair and releases fragrance slowly over time, preventing direct contact between the fragrance emulsion and the fixative polymer. The film acts as a mediator that separates the fragrance delivery function from the hair holding function, allowing both to perform optimally without interfering with each other.
Solution Approach 2:
The patent employs a thin film-forming polymer coating that encapsulates the fragrance. This flexible film adheres to the hair and provides a controlled release mechanism for the fragrance while maintaining the structural integrity needed for hair hold. The film's thin nature allows for gradual fragrance diffusion, and its flexibility enables it to conform to hair strands without compromising the fixative's humidity resistance.
2Ease of operation
If surfactants are added to stabilize fragrance emulsion, then fragrance deposition is improved, but the fixative becomes more susceptible to moisture and wetting, decreasing moisture resistance
Solution Approach 1:
The film-forming polymer serves as an intermediary barrier between the fragrance emulsion and the fixative polymer. By encapsulating the fragrance within the film, the need for surfactants that would otherwise be required to stabilize direct fragrance-fixative contact is eliminated. This intermediary layer provides emulsion stability without introducing moisture-susceptible surfactant components, thereby preserving the fixative's moisture resistance.
Solution Approach 2:
The patent extracts the fragrance from direct contact with the fixative polymer by encapsulating it within a separate film-forming polymer matrix. This separation removes the need for surfactants that would be required to stabilize the fragrance if it were in direct contact with the fixative, thereby eliminating the source of the moisture resistance problem while maintaining fragrance delivery functionality.
3Duration of action of moving object
If conventional fragrances are applied to hair, then pleasant scent during application is achieved, but the fragrance is lost quickly after applying
Solution Approach 1:
The patent changes the physical and chemical parameters of fragrance delivery by transitioning from direct emulsion application to film-encapsulated release. The film-forming polymer modifies the release kinetics of the fragrance, transforming it from rapid evaporation to controlled diffusion. This parameter change extends the fragrance duration while maintaining adequate intensity through sustained release rather than initial burst.
Solution Approach 2:
The film-forming polymer enables periodic fragrance release through controlled diffusion over time. Instead of a single application providing continuous scent, the film structure allows for sustained, periodic release of fragrance molecules as they gradually diffuse through the polymer matrix and evaporate, thereby extending the overall duration of fragrance presence on the hair.
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 solution provides a controlled release of fragrance upon water addition, offering a long-lasting scent without compromising the hair's hold or humidity resistance, with adjustable fragrance duration based on monomer ratios and neutralization levels.
Implementation Method 1
releasing the fragrance from the film upon addition of water
Implementation Method 2
at least one second monomer having a hydrophobic group
Data Source
AI summary
Hair styling compositions include at least one volatile compound and a hair fixative co-polymer, in which the hair fixative co-polymer includes at least one first monomer having an acid containing group and at least one second monomer having a hydrophobic group. The hair styling compositions provide extended release of volatile compounds, such as fragrances.