Black Textile Ink Composition for White Area Retention
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Solution Overview
Problem
Existing black inks for ink jet textile printing suffer from poor retention of white areas during reduction cleaning and inadequate light resistance, leading to unintended dyeing and insufficient colorfastness.
Innovation Solution
A black ink formulation incorporating specific disperse dyes such as C.I. Disperse Blue 60, C.I. Disperse Red 92, and C.I. Disperse Yellow 163, with optimized content ratios, which enhances light resistance and prevents dye bleeding during reduction cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional black ink formulations are used for ink jet textile printing, then the printing process can be completed, but poor reservation of white area occurs during reduction cleaning causing unintended dyeing
Solution Approach 1:
The patent changes the chemical parameters of the ink formulation by selecting specific disperse dyes (C.I. Disperse Blue 60, C.I. Disperse Red 92, and C.I. Disperse Yellow 163) with appropriate molecular structures and properties. These parameter changes ensure the dyes remain stable during reduction cleaning, preventing the harmful re-adsorption that causes poor white area reservation.
Solution Approach 2:
The patent uses a composite dye system combining three different disperse dyes with complementary properties. This composite formulation creates a synergistic effect where the combination of dyes provides both excellent light resistance and stability during reduction cleaning, resolving the contradiction between reliable white area reservation and prevention of unintended dyeing.
2Reliability
If conventional black ink formulations are used for ink jet textile printing, then the printing can be performed, but sufficient light resistance cannot be obtained
Solution Approach 1:
The patent optimizes the molecular structure parameters of the disperse dyes selected, choosing compounds with anthraquinone or dibenzoxazepine skeletons that inherently provide superior light resistance. By changing these chemical parameters, the formulation achieves excellent light fastness without requiring complex manufacturing processes or additional additives.
3Reliability
If disperse dyes with excellent light resistance are used, then light resistance is improved, but the dyes are likely to be decomposed by reducing agent during cleaning
Solution Approach 1:
The patent applies local quality by selecting disperse dyes with specific molecular characteristics (anthraquinone or dibenzoxazepine skeletons) that possess dual properties: excellent light resistance and stability toward reducing agents. This localized selection of dyes with tailored chemical properties allows the formulation to simultaneously achieve both light resistance and cleaning stability.
Solution Approach 2:
The composite dye system combines three disperse dyes (C.I. Disperse Blue 60, C.I. Disperse Red 92, and C.I. Disperse Yellow 163) whose individual properties complement each other. This composite approach ensures that the overall formulation maintains both light resistance and stability during reduction cleaning, as each dye component contributes to one or both desired properties.
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 ink effectively suppresses poor retention of white areas and provides excellent light resistance, ensuring accurate color reproduction and durability of textile prints.
Implementation Method 1
the disperse dye (A), the disperse dye (B), and the disperse dye (C) contained in the black ink for ink jet textile printing have an excellent light resistance and are likely to be decomposed by a reducing agent
Data Source
AI summary
There is provided a black ink for ink jet textile printing which includes a disperse dye (A), a disperse dye (B), a disperse dye (C), water, and an organic solvent. The disperse dye (A) is at least one of C.I. Disperse Blue 60 and C.I. Disperse Blue 165, the disperse dye (B) is at least one of C.I. Disperse Red 92, and C.I. Disperse Red 154, and the disperse dye (C) is C.I. Disperse Yellow 163.