Laundry detergent composition comprising a particle having hueing agent and clay
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Solution Overview
Problem
Laundry detergent manufacturers face challenges in incorporating hueing dyes into spray-dried detergent powders, as they require good storage stability, rapid dissolution in water, and uniform fabric deposition without causing spot staining, while maintaining the visual appearance of the detergent powder.
Innovation Solution
A particle composition comprising a hueing agent with a specific structure and clay, where the hueing agent is combined with a clay carrier to form a stable and non-staining hueing dye particle that can be incorporated into laundry detergents, ensuring excellent storage stability and fabric deposition without impacting the detergent's appearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If hueing dyes are incorporated into spray-dried detergent powders, then the detergent can visually brighten textile substrates, but the dye may bleed during storage and affect the colour of the base powder
Solution Approach 1:
The patent uses a carrier particle as an intermediary substance to hold the hueing dye. The carrier particle absorbs or adsorbs the dye, preventing it from bleeding during storage while allowing controlled release during washing. This mediator resolves the contradiction by isolating the dye from direct contact with the base powder during storage.
Solution Approach 2:
The invention creates a composite structure consisting of a carrier particle combined with hueing dye. This composite material integrates the stabilizing properties of the carrier with the colorimetric properties of the dye, achieving both storage stability and desired visual brightening effects without dye bleeding.
2Reliability
If hueing dyes are incorporated into detergent products, then fabric can be visually brightened, but spot staining may occur during the laundering process
Solution Approach 1:
The carrier particle serves as a mediator that controls the release of hueing dye to the fabric. During laundering, the carrier gradually releases the dye under controlled conditions, ensuring uniform deposition rather than concentrated spot staining. This intermediary function prevents direct, uncontrolled contact between dye and fabric.
Solution Approach 2:
The invention applies local quality by having the hueing dye distributed throughout the carrier particle structure rather than uniformly mixed in the base powder. This localized containment ensures that dye is released gradually and uniformly across the fabric surface, preventing localized over-concentration that would cause spot staining.
3Reliability
If hueing dyes are added to detergent powder, then textile substrates can be brightened, but the visual appearance of the detergent powder may be adversely affected
Solution Approach 1:
The carrier particle acts as a mediator that isolates the colored hueing dye from the base powder matrix. The carrier's physical or chemical properties prevent the dye from imparting its color to the surrounding powder, thus maintaining the aesthetic appearance of the detergent while preserving the brightening functionality.
Solution Approach 2:
The invention segments the detergent system into distinct components: a colorless or lightly colored base powder and separate carrier particles containing the hueing dye. This segmentation allows the base powder to maintain its visual appeal while the embedded carrier particles provide the necessary colorimetric function only when activated during washing.
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 particle composition achieves excellent storage stability, prevents dye bleeding, and ensures effective fabric deposition without causing spot staining, maintaining the visual appearance of the detergent powder.
Implementation Method 1
a particle that additionally comprises clay, the resultant particle exhibits both good storage stability
Implementation Method 2
exhibits excellent fabric deposition of the hueing dye during a laundering process
Data Source
AI summary
A laundry detergent composition having a particle, wherein the particle has: (a) hueing agent, wherein the hueing agent has the following structure:wherein: R1 and R2 are independently selected from the group consisting of: H; alkyl; alkoxy; alkyleneoxy; alkyl capped alkyleneoxy; urea; and amido; R3 is a substituted aryl group; X is a substituted group comprising sulfonamide moiety and optionally an alkyl and/or aryl moiety, and wherein the substituent group comprises at least one alkyleneoxy chain that comprises an average molar distribution of at least four alkyleneoxy moieties; (b) clay; and (c) another detergent ingredient.