Disperse Dye Composition for Sunlight-Fast Polyester Dyeing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The textile industry faces challenges in developing environmentally friendly disperse dyes that offer superior fastness to sunlight, broad pH stability, excellent compatibility, and high strength while being cost-effective, particularly for dyeing dacron and blended fabrics.
Innovation Solution
A disperse dye composition comprising specific chemical compounds, including those represented by formulas (1) to (7), which are combined in particular weight ratios with auxiliary materials, and processed using grinding and dispersion techniques to create a stable and effective dyeing solution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional disperse dyes are used to achieve cost-effective dyeing, then dyeing cost is reduced, but fastness to sunlight and environmental compatibility deteriorate
Solution Approach 1:
The patent applies composite materials by formulating a disperse dye composition comprising multiple dye compounds (specifically compounds of formulae (I), (II), and (III) in defined weight ratios) that work synergistically. This composite dye system achieves superior fastness to sunlight (rating ≥4) and broad pH stability while maintaining cost-effectiveness, resolving the contradiction between low cost and high reliability in dyeing applications
2Ease of manufacture
If conventional disperse dyes are used to achieve simple formulation, then ease of manufacture is improved, but pH stability and environmental compatibility deteriorate
Solution Approach 1:
The patent applies parameter changes by optimizing the chemical structure parameters of the dye compounds (specifically the substituents R1-R6 in formulae (I)-(III)) and their compositional ratios (70-95 wt% compound (I), 5-30 wt% compound (II), 10-40 wt% compound (III)). This optimized parameter configuration achieves broad pH stability (effective range pH 3-9) while maintaining formulation simplicity and environmental compatibility including Oeko-Tex Standard 100 certification
3Strength
If conventional disperse dyes are used to achieve high color strength, then dyeing efficiency is improved, but compatibility and fastness properties deteriorate
Solution Approach 1:
The patent applies merging by combining multiple dye compounds (formulae (I), (II), and (III)) into a single integrated dye composition system. This merged formulation achieves high color strength (excellent coloration on polyester and blended fabrics) while simultaneously providing excellent compatibility (leveling properties) and superior fastness properties (fastness to washing ≥4, fastness to sunlight ≥4), resolving the contradiction between strength and adaptability
Data Source
AI summary
A disperse dye composition, disperse dye and preparation method and use thereof are described. The disperse dye is suitable for fabrics, particularly for dyeing and printing of dacron and blended fabrics thereof.