Disperse Dye Mixture Composition for Wet Fastness on Polyester
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Solution Overview
Problem
Disperse azo dyes used on polyester and polyester blends face deficiencies in wet fastness and lightfastness properties, limiting their application effectiveness.
Innovation Solution
A dye mixture comprising specific disperse dyes of formulas (1) and (3a) to (3i), combined and processed to enhance wet fastness and lightfastness, where the dyes are mixed and homogenized with dispersing and wetting agents for textile dyeing, including polyester fibers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If disperse azo dyes of formula (1) are used for dyeing polyester and polyester blends, then the dyeing process is simple and cost-effective, but the wet fastness and lightfastness properties are insufficient
Solution Approach 1:
The patent combines disperse azo dyes of formula (1) with disperse dyes of formulas (3a)-(3i) into a multi-component dye mixture. This merging of different dye types synergistically improves wet fastness and lightfastness while maintaining the simplicity of the dyeing process, directly resolving the contradiction between ease of manufacture and reliability.
Solution Approach 2:
The invention creates a composite dye system by formulating mixtures containing disperse azo dyes combined with disperse dyes having specific molecular structures (formulas 3a-3i). This composite approach enhances the overall performance characteristics including wet fastness and lightfastness while preserving the cost-effectiveness and simplicity of using disperse dyes on polyester.
2Quantity of substance
If disperse azo dyes are used to achieve cost-effective dyeing on polyester, then production cost is reduced, but application properties such as wet fastness and lightfastness deteriorate
Solution Approach 1:
The patent merges disperse azo dyes with additional disperse dyes of formulas (3a)-(3i) to create a synergistic mixture. This combination improves application properties like wet fastness and lightfastness without significantly increasing production cost, as all components are standard disperse dyes that can be manufactured cost-effectively.
Solution Approach 2:
The invention optimizes the composition parameters of the dye mixture by specifying particular structural parameters for the disperse dyes (formulas 3a-3i) and their ratios to the azo dyes. This parameter optimization achieves improved application properties while maintaining cost-effectiveness through efficient use of dye components.
3Ease of operation
If single disperse dye components are used for dyeing, then the dyeing process is simple, but the build-up and fastness properties are insufficient
Solution Approach 1:
The patent combines multiple disperse dye components (azo dyes of formula (1) and disperse dyes of formulas (3a)-(3i)) into a unified dye mixture that maintains ease of operation through standard dyeing procedures while achieving superior build-up and fastness properties through the synergistic interaction of the combined components.
Solution Approach 2:
The invention develops a composite dye formulation that integrates disperse azo dyes with disperse dyes of specific structures (formulas 3a-3i). This composite material approach enhances build-up and fastness properties while preserving the simplicity of the dyeing process, as the mixture can be applied using conventional disperse dyeing methods.
Data Source
AI summary
The present invention is directed to dye mixtures comprising dye(s) of formula (1) and specific other dyes, the process for the production of these mixtures as well as their use for dyeing textiles.