Microfibrillated Cellulose in Liquid Dishwashing Detergent for Uniform Dosing
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Solution Overview
Problem
Existing liquid hand dishwashing detergent compositions face issues with uneven dispensing due to slow viscosity recovery after shaking or squeezing, leading to over-dispensing and increased consumption, which affects user satisfaction.
Innovation Solution
Incorporation of microfibrillated cellulose derived from wood into the detergent composition, which provides rapid viscosity recovery after shear, ensuring uniform dosing and improved phase stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a structurant is added to increase viscosity for better dosing control, then viscosity is improved, but the structure is destroyed upon shaking or squeezing leading to over-dispensing
Solution Approach 1:
The patent changes the chemical composition parameters by incorporating specific surfactant systems (anionic surfactant combined with amphoteric or zwitterionic co-surfactants) and wood-derived microfibrillated cellulose. This composition modification enables the detergent to achieve high viscosity (500-5000 cP) while maintaining structural stability against shaking and squeezing, allowing dosing consistency to be maintained even at higher viscosities.
2Manufacturing precision
If higher viscosity is used to improve dosing consistency, then dosing uniformity is improved, but the detergent is used up more quickly due to structure destruction
Solution Approach 1:
The patent creates a composite system combining wood-derived microfibrillated cellulose with a specific surfactant system (anionic surfactant plus amphoteric or zwitterionic co-surfactant). This composite structure provides both the high viscosity needed for dosing uniformity and the structural stability to prevent premature breakdown during normal handling, thereby extending product longevity while maintaining dosing precision.
3Stability of the object's composition
If structurant containing detergent composition is used to provide higher viscosity, then viscosity is improved, but control through narrow apertures becomes difficult
Solution Approach 1:
The patent modifies the rheological parameters of the detergent by incorporating wood-derived microfibrillated cellulose and specific surfactant systems. This creates a composition with high viscosity (500-5000 cP) that maintains sufficient flowability through narrow apertures while providing stable dosing control, resolving the conflict between viscosity and dispensing ease.
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 wood-derived microfibrillated cellulose enhances viscosity recovery, resulting in uniform dosing and improved stability of the liquid detergent, reducing over-dispensing and enhancing user satisfaction.
Implementation Method 1
Incorporation of microfibrillated cellulose derived from wood into the detergent composition, which provides rapid viscosity recovery after shear
Implementation Method 2
the surfactant system comprises anionic surfactant and a co-surfactant selected from the group consisting of an amphoteric surfactant, a zwitterionic surfactant and mixtures thereof
Data Source
AI summary
The need for a liquid hand dishwashing composition which provides for uniform dosing, even when the bottle is shaken or when the user dispenses using multiple successive squeezes, is met by formulating the liquid hand dishwashing composition with an anionic surfactant, a co-surfactant, and microfibrous cellulose derived from wood.