Solid Laundry Detergent Catalyst Ratio
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Solution Overview
Problem
Current solid laundry detergent compositions face challenges in controlling catalytic capability relative to electrolytic strength, leading to suboptimal fabric surface deposition and rinsing profiles, especially in low-water washing conditions.
Innovation Solution
A solid laundry detergent composition with multiple catalysts, specifically enzymes and transition metal bleach catalysts, is formulated to control the ratio of activation energy reduction to electrolytic strength, reducing electrolytes like sodium sulphate and chloride to enhance cleaning performance and rinsing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the amount of water used during laundering is reduced, then environmental profile is improved, but cleaning performance deteriorates due to higher concentration of active ingredients and increased competition for fabric surface deposition
Solution Approach 1:
The patent changes the chemical parameters of the detergent composition by reducing electrolytic strength (electrical conductivity) while maintaining or enhancing catalytic capability. This allows the formulation to work effectively in low-water conditions by optimizing the balance between ingredient concentration and fabric surface deposition, resolving the contradiction between environmental benefits of water reduction and cleaning performance
Solution Approach 2:
The patent uses composite detergent formulations containing multiple catalysts (enzymes and/or bleach catalysts) combined with reduced electrolyte content. This composite approach creates a synergistic effect where the catalytic components enhance cleaning performance in concentrated conditions without requiring high water volumes, thus maintaining reliability while improving environmental profile
2Reliability
If electrolytic strength of the detergent composition is increased, then cleaning performance is improved, but fabric surface deposition of catalysts deteriorates
Solution Approach 1:
The patent optimizes the electrolytic strength parameter by reducing electrical conductivity of the detergent composition. This parameter change prevents excessive competition for fabric surface deposition sites while maintaining sufficient cleaning performance, thereby improving catalyst deposition quality without sacrificing cleaning efficacy
3Reliability
If catalytic capability is increased to compensate for lower water usage, then cleaning performance is maintained, but rinsing profile deteriorates due to greater stress on rinsing
Solution Approach 1:
The patent balances catalytic capability with electrolytic strength by reducing electrical conductivity while maintaining catalytic activity. This parameter optimization ensures that catalytic cleaning performance is maintained in low-water conditions while the reduced electrolyte content facilitates easier rinsing, reducing the harmful rinsing stress
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 fabric surface deposition and rinsing profiles, maintaining effective cleaning performance even in low-water washing conditions by carefully managing the catalytic capability and electrolytic strength of the detergent.
Implementation Method 1
Catalysts, such as enzymes and/or bleach catalysts have been used to improve the performance of the detergent product... catalysts lower the activation energy of the reactions they catalyse
Implementation Method 2
controlling the catalytic capability of the solid laundry detergent composition relative to the electrolytic strength of the laundry detergent composition leads to improved fabric surface deposition of the catalysts, and an improved rinsing profile
Data Source
AI summary
A solid laundry detergent composition having multiple catalysts and water-soluble electrolyte, wherein the ratio of (i) the total reduction in activation energy in kilojoules per mole achieved by the catalysts to (ii) the electrolytic strength of the laundry detergent composition at a concentration of 1 g/l in de-ionized water and at a temperature of 25° C. in mScm−1 laundry detergent composition is at least 300.