Personal Care Composition Microcapsule Deposition
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Solution Overview
Problem
Personal care compositions face challenges in achieving a balance between structure and stability to effectively deposit microcapsules on the skin while providing noticeable fragrance, as excessive structure leads to poor performance and insufficient structure results in instability.
Innovation Solution
A personal care composition comprising a structured cleansing phase with anionic surfactants, a benefit phase with cationic deposition polymer and triglycerides, and microcapsules, which forms clusters upon dilution to enhance deposition and fragrance noticeability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If structure is increased in personal care composition, then stability is improved, but performance deteriorates
Solution Approach 1:
The patent modifies the charge density parameter of microcapsules by using anionic microcapsules instead of conventional nonionic or cationic ones. This parameter change enables the microcapsules to interact with cationic deposition polymers, improving both stability through electrostatic attraction and performance through enhanced deposition on skin surfaces.
Solution Approach 2:
The invention creates a composite system combining anionic microcapsules with cationic deposition polymers. This composite approach allows the microcapsules to benefit from the polymer's deposition capabilities while maintaining structural stability, resolving the contradiction between stability and performance.
2Reliability
If structure is decreased in personal care composition, then performance is improved, but stability deteriorates
Solution Approach 1:
By changing the charge parameter of microcapsules to anionic, the system achieves optimal interaction with cationic polymers at lower structure levels, enabling good performance without excessive structuring that would cause instability.
3Ease of operation
If fragrance is added to personal care composition, then user delight is improved, but noticeability deteriorates due to volatility and habituation
Solution Approach 1:
The fragrance is pre-encapsulated in anionic microcapsules before product application. This preliminary encapsulation protects the fragrance from volatility during storage and application, allowing it to be released gradually on the skin surface where it interacts with cationic polymers for enhanced noticeability.
Solution Approach 2:
The anionic microcapsules serve as intermediaries that carry fragrance molecules to the skin surface. The microcapsule-polymer interaction mediates fragrance release, preventing premature volatility while ensuring noticeable fragrance deposition on the skin.
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 achieves improved microcapsule deposition and fragrance noticeability by forming clusters, maintaining stability and performance, and optimizing the balance between structure and stability.
Implementation Method 1
a benefit phase comprising from 0.05% to 10%, preferably from 0.10% to 3%, by weight of the composition, of a microcapsule premix comprising a cationic deposition polymer and anionic microcapsules
Data Source
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AI summary
A personal care composition includes a structured cleansing phase; a benefit phase including triglycerides, a cationic deposition polymer, and anionic microcapsules; and a carrier; and methods relating thereto.