Dual Optical Brightener Granular Laundry Detergent
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Solution Overview
Problem
Existing laundry detergents often require consumers to split their fabric laundry loads and use different detergents for optimal whiteness benefits on various fabric types, leading to inconvenience.
Innovation Solution
A granular laundry detergent composition comprising a first and second optical brightener, with specific structures, and optionally a soil release polymer, providing whiteness benefits across a range of fabric types without negatives.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single optical brightener is used in laundry detergent, then the detergent can be formulated with simpler composition, but it provides whiteness benefit on only certain fabric types requiring consumers to split laundry loads
Solution Approach 1:
The patent combines two different optical brighteners (a fluorescent brightener and a blue brightener) into a single detergent formulation. This merging allows the detergent to provide whiteness benefits across multiple fabric types simultaneously, resolving the contradiction by achieving broader fabric compatibility without requiring multiple separate detergent formulations.
Solution Approach 2:
The combined optical brightener system provides universal whiteness enhancement across different fabric types including whites, colors, and delicates. The fluorescent brightener contributes to general brightening while the blue brightener specifically enhances whites, creating a multi-functional system that adapts to various fabric requirements within a single detergent formulation.
2Ease of operation
If different detergents are used for different fabric types to optimize whiteness benefit, then optimal whiteness can be achieved on all fabric types, but consumers experience inconvenience from splitting laundry loads
Solution Approach 1:
The detergent formulation achieves universality by incorporating dual optical brighteners that work effectively on multiple fabric types. This allows consumers to wash all fabric types (whites, colors, delicates) in a single load using one detergent, eliminating the need to split laundry loads while maintaining optimal whiteness benefits across all fabric categories.
3Illumination intensity
If optical brighteners are added to laundry detergent to provide whiteness benefit, then fabric appearance is improved, but the detergent composition becomes more complex requiring multiple ingredients
Solution Approach 1:
The patent merges two complementary optical brighteners into a unified formulation where the fluorescent brightener and blue brightener work synergistically. This combination achieves enhanced fabric whiteness and brightness more effectively than a single brightener could provide alone, while the formulation remains manageable by integrating both brighteners into one cohesive detergent composition rather than requiring multiple separate products.
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 enhanced whiteness benefits across different fabrics, demonstrating synergistic effects when specific optical brighteners are combined, improving fabric appearance.
Implementation Method 1
Optical brighteners are known and have been added to laundry detergent compositions to provide whiteness benefits to fabrics
Data Source
AI summary
The present invention is to a granular laundry detergent composition including a first optical brightener and a second optical brightener. Also contemplated is a water-soluble unit dose article including granular laundry detergent composition.