Textile Bluing Composition for Yellowing Without Blue Build-Up
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Solution Overview
Problem
Textile articles experience visually-perceived yellow coloration due to repeated use and laundering, with existing solutions failing to effectively address this issue without causing excessive build-up or staining.
Innovation Solution
A bluing composition concentrate containing specific blue or violet colorants, conforming to certain structural formulas, is used in an aqueous treatment to deposit onto textiles, counteracting yellow coloration without excessive build-up, comprising an aqueous medium, a primary colorant with specific solubility and deposition characteristics, and optionally secondary colorants, with minimal surfactant content.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional bluing agents are used to decrease yellow coloration, then the yellow coloration is reduced, but excessive blue build-up occurs with successive treatments
Solution Approach 1:
The patent modifies the chemical structure of the bluing agent by specifying particular ratios of aromatic rings to sulfonate groups, and by defining the nature of substituent groups (R1-R6), to achieve optimal deposition characteristics that prevent excessive build-up while maintaining effectiveness against yellow coloration
Solution Approach 2:
The patent introduces specific structural variations at different positions of the bluing agent molecule (different R groups at positions R1-R6) to create localized chemical properties that control deposition behavior and prevent uniform excessive build-up across the textile surface
2Object-affected harmful factors
If conventional bluing agents are used to decrease yellow coloration, then the yellow coloration is reduced, but excessive staining occurs
Solution Approach 1:
The patent adjusts chemical parameters including the number of aromatic rings (a+d and b+e values), the nature of substituent groups, and the counterion type to optimize the balance between color correction effectiveness and staining prevention
3Quantity of substance
If high surfactant content is used in bluing composition, then deposition on textile is enhanced, but excessive build-up and staining increase
Solution Approach 1:
The patent optimizes surfactant concentration to a specific range (0.1-5 wt% in concentrate, less than 25 ppm in diluted composition) to achieve sufficient wetting and deposition promotion while avoiding the harmful effects of excessive surfactant that lead to build-up and staining
Solution Approach 2:
The patent creates a composite bluing composition integrating the specifically structured colorant with controlled amounts of surfactant and aqueous medium, where the synergistic interaction between components achieves effective deposition without excessive build-up
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 solution effectively reduces visually-perceived yellow coloration on textiles without causing excessive blue build-up, maintaining aesthetic quality and stability through controlled deposition and lightfastness, as demonstrated by improved Δb* values and reduced lightfastness loss compared to commercial products.
Implementation Method 1
the textile article to absorb at least a portion of the bluing composition
Data Source
AI summary
A bluing composition concentrate comprises an aqueous medium and at least one colorant that exhibits a blue or violet shade when deposited onto a textile material. The concentrate can be used to produce a bluing composition, and the bluing composition can be used to treat textile materials in such a way as to decrease the visually-perceived yellow coloration of textile articles that can occur with repeated use and laundering.