Hair Care Compositions Using Nonionic Polymers
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Solution Overview
Problem
Rinse-off hair care compositions often fail to provide sufficient 'wet' sensory benefits, such as improved hair feel during washing, and are not easy to rinse.
Innovation Solution
Incorporating a combination of water-soluble nonionic polymers, specifically polyethyleneoxides and nonionic cellulose ethers, into the compositions to enhance hair care benefits and ease of rinsing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If water-insoluble oily materials, cationic polymers or cationic surfactants are used as conditioning agents, then conditioning benefits are provided, but wet sensory benefits are insufficient
Solution Approach 1:
The patent combines water-soluble nonionic polymers with traditional conditioning agents (cationic polymers, cationic surfactants, or water-insoluble oily materials) to create a composite conditioning system. This composite approach allows the formulation to provide both traditional conditioning benefits and improved wet sensory benefits, as the water-soluble nonionic polymers contribute to wet feel while working synergistically with the other conditioning agents.
2Reliability
If traditional conditioning agents are used, then conditioning is provided, but ease of rinsing is poor
Solution Approach 1:
The patent changes the solubility parameter of the conditioning system by introducing water-soluble nonionic polymers. These polymers enhance the water solubility and rinsability of the overall formulation while maintaining conditioning efficacy. The water-soluble nature of these polymers allows for easier rinsing compared to traditional water-insoluble oily materials, while their nonionic character prevents interference with cationic conditioning agents.
3Ease of operation
If water-soluble nonionic polymers are incorporated, then wet sensory benefits are improved, but formulation complexity increases
Solution Approach 1:
The patent utilizes water-soluble nonionic polymers that can be easily incorporated into existing shampoo formulations by simply adjusting concentration parameters. These polymers are available in various molecular weights and can be selected based on desired performance characteristics, allowing formulators to optimize wet sensory benefits without complex formulation processes or additional manufacturing steps.
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 use of water-soluble nonionic polymers significantly improves wet sensory benefits and ease of rinsing, providing better hair feel and surface roughness, texture, and combing benefits.
Implementation Method 1
They are said to deposit under the hair cuticle and provide it with more surface roughness and texture
Implementation Method 2
The polymers have a high affinity for hair proteins and form hydrogen bonds with them
Data Source
AI summary
The invention provides a hair care composition comprising a water-soluble, nonionic polymer of ethylene oxide and a water-soluble, nonionic cellulose ether.