Iron-Based Catalyst and Sulfite Bleach in Laundry Detergent
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Solution Overview
Problem
Laundry detergent powders face challenges in achieving compatibility between sulfite-based bleaches and other bleach systems, limiting their effectiveness in removing tough stains like curry and ink stains, which affects consumer perception of cleaning performance.
Innovation Solution
The combination of iron-based bleach catalysts, such as FeONIX and FeONIX-A, with sulfite-based reducing bleach in a solid free-flowing particulate detergent composition, which surprisingly shows compatibility and enhanced stain removal performance against curry and ink stains.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If sulfite-based bleach is incorporated into laundry detergent powder, then stain removal performance against ink stains is improved, but compatibility with other bleach systems deteriorates
Solution Approach 1:
The patent introduces an iron-based bleach catalyst as an intermediary substance that enables the sulfite-based bleach to function effectively in detergent powder without directly conflicting with other bleach systems. The catalyst mediates the chemical reactions, allowing sulfite to act as a reducing bleach while maintaining system compatibility through controlled catalytic action rather than direct chemical interaction between conflicting components.
Solution Approach 2:
The patent changes the chemical parameters of the bleach system by using sulfite-based reducing bleach instead of traditional oxidizing bleaches, and introduces iron-based catalysts to enable this parameter change. This allows the system to achieve ink stain removal capability while managing compatibility issues through controlled chemical parameter adjustments rather than direct component conflict.
2Manufacturing precision
If iron-based bleach catalyst is used, then curry stain removal performance is improved, but compatibility with sulfite-based bleach deteriorates
Solution Approach 1:
The patent merges two previously incompatible technologies - iron-based bleach catalysts and sulfite-based reducing bleach - into a single functional system. By combining these components in specific formulations with controlled ratios and supporting ingredients, the patent achieves synergistic effects where the iron catalyst enhances curry stain removal while the sulfite provides reducing bleach action, and their interaction is managed to maintain overall system compatibility.
3Stability of the object's composition
If conventional bleach systems are used, then compatibility is maintained, but stain removal performance against hero stains deteriorates
Solution Approach 1:
The patent creates a composite bleach system that combines multiple components - sulfite-based reducing bleach, iron-based bleach catalyst, and supporting detergent ingredients - to achieve performance that exceeds individual components. This composite approach allows the system to maintain compatibility through balanced formulation while achieving superior stain removal on hero stains like curry and ink through the combined actions of reducing bleach and catalytic enhancement.
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
This combination provides exceptional stain removal performance for both curry and ink stains, effectively driving consumer acceptance of the detergent's overall cleaning performance by ensuring good stain removal capabilities.
Implementation Method 1
iron-based bleach catalyst having the following structure: [FeONIX/FeONIX-A structure]
Implementation Method 2
sulfite-based reducing bleach
Data Source
AI summary
The present invention relates to a solid free-flowing particulate laundry detergent composition, wherein the composition comprising a detersive surfactant, an iron-based bleach catalyst and a sulfite-based reducing bleach.