Hair Conditioner Composition with Film-Forming Polyester and Polyquaternium
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Solution Overview
Problem
Existing hair conditioning products provide transient benefits that do not last through multiple shampoos, often resulting in a greasy feel and unnatural hair texture, and fail to effectively condition wavy and curly hair for extended periods.
Innovation Solution
Aqueous hair conditioner composition combining a film-forming polyester, a suspending agent such as polyquaternium-52 or polyquaternium-37, and an amino or aminopropyl-functional silicone, which is applied to wet or dry hair and left on for 1 to 10 minutes before shampooing, providing durable conditioning benefits lasting through multiple shampoos.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional conditioning products (silicones, quaternary ammonium materials, esters, hydrocarbons, natural oils) are applied to hair, then conditioning benefits are provided, but the hair develops a greasy feel and weighs down
Solution Approach 1:
The patent combines three distinct conditioning agents (polyester, suspending agent, and silicone) in a specific formulation to achieve synergistic effects. This composite approach allows the product to provide durable conditioning benefits while avoiding the greasy feel associated with traditional single-ingredient conditioners, as each component contributes different functional properties that complement rather than compound the harmful effects.
Solution Approach 2:
The patent specifies precise concentration ranges for each ingredient (polyester at 0.1-10%, suspending agent at 0.1-5%, silicone at 0.1-5%) to optimize performance. By carefully controlling these parameters, the formulation achieves durable conditioning effects without producing the greasy sensation that plagues traditional conditioners, demonstrating how parameter optimization can resolve the contradiction between effectiveness and sensory quality.
2Reliability
If traditional conditioning products are applied to hair, then transient conditioning benefits are achieved, but the benefits do not last through multiple shampoos
Solution Approach 1:
The patent employs a composite formulation combining polyester, suspending agent, and silicone in specific proportions. This multi-component system provides conditioning benefits that persist through multiple shampoo cycles (3-10 shampoos), dramatically extending the duration of action compared to traditional transient conditioners. The synergistic interaction between components ensures long-lasting effects without requiring frequent reapplication.
Solution Approach 2:
The patent optimizes the concentration parameters of each ingredient to achieve extended durability. The polyester content (0.1-10%) provides film-forming properties, the suspending agent (0.1-5%) ensures even distribution and attachment, and the silicone (0.1-5%) contributes to long-lasting smoothness. These parameter optimizations collectively extend the conditioning benefit duration through multiple wash cycles.
3Reliability
If styling polymers are applied to hair, then hold and conditioning benefits are provided, but the hair develops an unnatural feel and wet look
Solution Approach 1:
The patent carefully controls the concentration and type of silicone (0.1-5% amino or aminopropyl-functional silicone) to provide conditioning benefits without the unnatural wet look associated with styling polymers. By adjusting this parameter within the specified range and selecting appropriate silicone derivatives, the formulation achieves durable conditioning while maintaining natural hair appearance and texture.
Solution Approach 2:
The patent uses a composite of polyester, suspending agent, and silicone rather than relying on styling polymers. This alternative composite provides comparable hold and conditioning benefits but avoids the unnatural feel and wet appearance, as the ingredients interact to produce natural-looking results while maintaining durability through multiple shampoos.
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 delivers long-lasting conditioning benefits, enhancing hair smoothness and manageability for wavy and curly hair, lasting from 3 to 10 shampoos without the greasy or unnatural feel associated with traditional products.
Implementation Method 1
The present invention relates to an aqueous cosmetic composition for application to hair comprising: (a) at least one film-forming polyester
Implementation Method 2
at least one suspending agent selected from polyquaternium-52, polyquaternium-37, and mixtures thereof
Implementation Method 3
an amino or aminopropyl-functional silicone (such as bis-hydroxy/methoxy amodimethicone)
Data Source
AI summary
The present application discloses hair conditioning compositions which provide effective hair conditioning, particularly to wavy or curly hair, the conditioning benefit lasting in the hair over several (up to 10) subsequent shampooings. The compositions comprise a film-forming polyester that is the reaction product of at least one diol, at least one polyol, and at least one dicarboxylic acid; polyquaternium-52 and/or polyquaternium-37; and at least one amino or aminopropyl-functional silicone, in an aqueous vehicle. The composition may additionally include dimethicone and/or a branched-chain ester. The method of conditioning hair using the defined compositions is also disclosed.