Crosslinked Cellulose Ether Thickener for Personal Care
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Solution Overview
Problem
Conventional cellulose ether thickeners in personal care formulations often impart a stringy consistency and have limited thickening effect and wetting ability, while also lacking biodegradability and sustainability.
Innovation Solution
The use of a crosslinked cellulose ether with 0.1 to 1.0 wt% polyether groups as a suds enhancing structurant in aqueous personal care rinse off compositions, which provides a luxuriant feel and enhances suds life without the stringy consistency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional cellulose ether thickeners are used, then thickening effect is provided, but stringy consistency is imparted to the formulation
Solution Approach 1:
The patent applies parameter changes by modifying the chemical structure of cellulose ether through crosslinking and introducing polyether groups (0.1 to 1.0 wt%). This structural modification changes the physical properties of the thickener, enabling it to provide thickening effect while eliminating the stringy consistency problem associated with conventional cellulose ethers.
2Quantity of substance
If conventional cellulose ether thickeners are used, then thickening is achieved, but wetting ability is limited
Solution Approach 1:
The patent employs composite materials by creating a crosslinked cellulose ether with integrated polyether groups. This composite structure combines the thickening capability of cellulose ether with the wetting properties of polyether groups, achieving both functions simultaneously without the limitations of conventional single-function thickeners.
3Stability of the object's composition
If conventional cellulose ether thickeners are used, then formulation stability is provided, but biodegradability and sustainability are compromised
Solution Approach 1:
The patent applies parameter changes by introducing a controlled amount of polyether groups (0.1 to 1.0 wt%) into the crosslinked cellulose ether structure. This modification maintains the formulation stability provided by the crosslinked network while improving biodegradability and sustainability, as the limited polyether content allows microbial degradation to proceed more effectively than in conventional synthetic thickeners.
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 crosslinked cellulose ether with polyether groups achieves high zero shear viscosity, low shear viscosity, and a filament break-up time of ≤ 5 seconds, resulting in a composition with a luxuriant feel and prolonged suds life.
Implementation Method 1
the crosslinked cellulose ether with polyether groups achieves high zero shear viscosity, low shear viscosity
Implementation Method 2
a filament break-up time of ≤ 5 seconds
Data Source
AI summary
An aqueous personal care rinse off composition is provided, comprising: a dermatologically acceptable aqueous vehicle; a dermatologically acceptable cleaning surfactant; and a suds enhancing structurant; wherein the suds enhancing structurant comprises a crosslinked cellulose ether containing 0.1 to 1.0 wt%, based on weight of the crosslinked cellulose ether, of polyether groups.