1-amino-4-hydroxy-9,10-anthraquinone derivative liquid disperse dye, preparation method therefor, and use thereof
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Solution Overview
Problem
1-amino-4-hydroxy-9, 10-anthraquinone derivatives in dyeing processes face challenges with high pH sensitivity, leading to dyeing defects such as blue spots and reduced color depth, especially when used in alkaline conditions, limiting the application of these dyes and requiring precise pH control.
Innovation Solution
A liquid disperse dye composition comprising 1-amino-4-hydroxy-9, 10-anthraquinone derivatives, sodium polyacrylate, water-soluble polyester, and water-soluble polyalkylene glycol, which allows for broader pH tolerance and uniform dyeing, preventing blue spots and achieving a purplish-red color without the need for additional color matching, by adjusting the dyeing temperature and pH within a range of 120°C to 135°C and 4.5 to 10.5.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If 1-amino-4-hydroxy-9, 10-anthraquinone derivative is used in alkaline medium, then the dyeing process becomes simpler, but blue spots appear on the cloth and color depth decreases
Solution Approach 1:
The patent introduces a specific auxiliary agent composition containing sodium polyacrylate, water-soluble polyester, and water-soluble polyalkylene glycol as intermediary substances. These agents mediate between the anthraquinone derivative dye and the polyester fabric in alkaline medium, preventing direct harmful interactions that cause blue spots while maintaining color depth and dyeing uniformity.
Solution Approach 2:
The patent changes the chemical composition parameters of the dyeing system by incorporating specific ratios of auxiliary agents (sodium polyacrylate 0.3-0.8%, water-soluble polyester 2.0-5.0%, water-soluble polyalkylene glycol 0.3-0.5%). This parameter modification allows the dyeing process to operate in alkaline medium without producing blue spots, transforming the system's behavior to achieve both simplicity and quality.
2Reliability
If pH control is strictly maintained in weak acid range, then dyeing quality is maintained, but process complexity and pH control requirements increase
Solution Approach 1:
The patent inverts the conventional approach by allowing alkaline pH conditions (pH 4.5-10.5) instead of maintaining strict weak acid conditions. The auxiliary agent system is designed to work in this inverted pH range, eliminating the need for complex pH control mechanisms while maintaining or improving dyeing quality.
Solution Approach 2:
The patent fundamentally changes the pH parameter from weak acid (4.0-6.5) to alkaline (4.5-10.5) range. This parameter change, combined with the auxiliary agent formulation, simplifies the overall process by removing strict pH control requirements while maintaining dyeing quality.
3Productivity
If high temperature dyeing is applied, then dyeing efficiency increases, but color uniformity and brilliance decrease due to purple rendering
Solution Approach 1:
The auxiliary agents act as intermediaries that facilitate high-temperature dyeing (120-135°C) while maintaining color uniformity and brilliance. These substances mediate the interaction between the anthraquinone derivative and polyester fibers at elevated temperatures, preventing purple rendering and ensuring uniform color distribution.
Solution Approach 2:
The patent creates a composite dyeing system combining the anthraquinone derivative with multiple auxiliary agents (sodium polyacrylate, water-soluble polyester, water-soluble polyalkylene glycol). This composite formulation enables high-temperature processing while maintaining color quality, achieving both high productivity and reliability.
4Adaptability or versatility
If additional color matching dyes are added to achieve purplish-red effect, then color variety increases, but dyeing process complexity and wastewater chroma increase
Solution Approach 1:
The patent changes the chemical structure parameters of the parent dye molecule by introducing specific substituents at the 1-position (amino group) and 4-position (hydroxyl group) of the anthraquinone core. This molecular parameter modification inherently produces purplish-red to blue-purple colors, eliminating the need for additional color-matching dyes and simplifying the overall process.
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 provides a uniform and stable dyeing effect across a wider pH range, avoiding blue spots and achieving high color fastness, suitable for low-water consumption printing and dyeing processes, with improved dyeing uniformity and color brilliance.
Implementation Method 1
a liquid disperse dye composition comprising 1-amino-4-hydroxy-9, 10-anthraquinone derivatives, sodium polyacrylate, water-soluble polyester, and water-soluble polyalkylene glycol
Implementation Method 2
allows for broader pH tolerance and uniform dyeing, preventing blue spots and achieving a purplish-red color without the need for additional color matching, by adjusting the dyeing temperature and pH within a range of 120°C to 135°C and 4.5 to 10.5
Data Source
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Figure 3
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AI summary
Disclosed are a method for preparing a liquid disperse dye and the use of same; wherein the liquid disperse dye is composed of a 1-amino-4-hydroxy-9, 10-anthraquinone derivative, CNF , 1815, sodium polyacrylate , a water-soluble polyester, and a water-soluble polyether, wherein the liquid disperse dye can completely avoid the occurrence of blue stains caused by the 1-amino-4-hydroxy-9, 10-anthraquinone derivative during high temperature dyeing, improves the rate of success of dyeing an article in one step, and improves the dyeing uniformity and color fastness; alternatively, the liquid disperse dye is composed of 1-amino-4-hydroxy-9, 10-anthraquinone, CNF, 1815, a base, ethanol, sodium polyacrylate, a water-soluble polyester, and a water-soluble polyether. By means of the addition of the water-soluble polyester and polyether and the sodium polyacrylate, a fuchsia dyed article is obtained for the first time; in addition, the problem that existing fuchsia colors all require color matching is solved, the technological adaptability thereof is extended, and same meets the requirements for low water consumption printing and dyeing processing technologies.