Polyurethane Latex Hair Composition for Flexible Styling
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Solution Overview
Problem
Traditional hair styling products fail to provide long-lasting style control, frizz management, and protection from heat damage while maintaining a natural look and feel, often leaving a sticky or crunchy residue due to water-resistant films formed by film-forming polymers.
Innovation Solution
A hair-treatment composition combining polyurethane latex polymers, thickening agents, and water, which forms a hydrophobic, flexible film that provides long-lasting style control, frizz management, and protection from heat damage, maintaining a natural appearance and feel even after washing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If film-forming polymers are used to provide water-resistant protection and styling benefits, then styling hold and frizz control are improved, but the hair develops a sticky or crunchy residue and loses natural look and feel
Solution Approach 1:
The patent changes the chemical parameters of the film-forming polymer by using polyurethane latex with specific glass transition temperatures (Tg) ranging from -50°C to 0°C, and controlling the polymer architecture (linear, branched, crosslinked). This parameter optimization allows the film to remain flexible and non-tacky while maintaining water resistance and styling hold, thus resolving the contradiction between styling reliability and residue formation.
Solution Approach 2:
The patent creates a composite system combining polyurethane latex polymer with specific additives including silicones (e.g., dimethicone), oils, and conditioning agents. This composite formulation enhances the film's properties to provide protection and styling while preventing the sticky or crunchy residue associated with conventional polymers, thereby maintaining natural look and feel.
2Object-generated harmful factors
If traditional oil treatments are used to nourish and moisturize hair, then frizz control and natural look are improved, but long-lasting shape control and styling benefits are limited
Solution Approach 1:
The patent merges the moisturizing and frizz-control properties of traditional oil treatments with the film-forming and shape-holding capabilities of polyurethane latex polymers. The composition combines oils (e.g., mineral oil, plant oils) with the polymer system to create a multi-functional product that delivers both nourishment and long-lasting styling, resolving the contradiction between natural care and styling durability.
Solution Approach 2:
The patent creates a universal hair treatment composition that performs multiple functions simultaneously: conditioning, moisturizing, frizz control, heat protection, and long-lasting styling. The polyurethane latex polymer system serves as a platform that can incorporate various active ingredients to deliver diverse benefits in a single application, eliminating the need for separate oil treatment and styling product steps.
3Reliability
If polymer concentration is increased to enhance styling benefits, then shaping memory and hold are improved, but viscosity increases rapidly and application becomes difficult
Solution Approach 1:
The patent optimizes the polymer concentration parameter within a specific range (0.1-10% w/w) and changes the polymer's physical parameters by selecting polyurethane latex with controlled particle size (0.01-10 micrometers) and glass transition temperature. These parameter adjustments allow achieving adequate shaping memory and hold without excessive viscosity increase, maintaining ease of application.
Solution Approach 2:
The patent introduces intermediary substances including surfactants, co-solvents, and rheology modifiers that mediate between the polymer particles and water phase. These intermediaries prevent excessive viscosity buildup by improving dispersion and reducing inter-particle interactions, allowing higher polymer concentrations to be used without compromising applicability.
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 improves hair manageability, provides long-lasting style and frizz control, and protects hair from damage, including heat damage, while maintaining a natural look and feel, making it suitable for use in home routines without the need for special salon procedures.
Implementation Method 1
the compositions provide the hair with a hydrophobic, flexible film or film-like coating that is long-lasting
Implementation Method 2
The hair-treatment compositions typically include at least: one or more polyurethane latex polymers; one or more thickening agents; and water
Data Source
AI summary
The instant disclosure relates to hair-treatment compositions. The hair-treatment compositions typically include: one or more polyurethane latex polymers; one or more thickening agents; one or more water-soluble solvents; and water. Additional components such as silicones, emulsifiers, surfactants, cationic polymers, etc., can also be included. The instant disclosure also relates to kits that include the hair-treatment compositions and to methods for treating hair with the hair-treatment compositions.