Ink Jet Ink Composition with Cyclic Amide for Textile Hue Stability
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Solution Overview
Problem
Ink jet textile printing faces challenges in maintaining color stability and light fastness, particularly for hues in the range of 260 to 310 degrees, as existing ink compositions experience temporal hue changes due to differences in light fastness between dyes and are prone to clogging and low ejection reliability.
Innovation Solution
An ink jet ink composition containing a dye with copper or chromium, such as C.I. Reactive Blue 13 or C.I. Acid Blue 193, combined with 5% to 30% cyclic amide with a normal boiling point between 190°C to 260°C, which enhances dye solubility and stability, and an alkyl polyol for moisture retention, reducing temporal hue changes and improving ejection reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional ink compositions are used for textile printing, then color reproduction is achieved, but temporal hue changes occur due to differences in light fastness between dyes
Solution Approach 1:
The patent changes the chemical composition parameters of the ink by incorporating specific cyclic amides with controlled boiling points (190-260°C) and using dyes containing copper or chromium. These parameter changes stabilize the hue of blue colors (260-310 degrees) while maintaining color reproduction accuracy, resolving the contradiction between initial color quality and long-term hue stability.
2Stability of the object's composition
If ink compositions are optimized for color stability, then light fastness improves, but ejection reliability deteriorates due to clogging and poor continuous ejection stability
Solution Approach 1:
The patent optimizes physical parameters of the ink composition by selecting cyclic amides with specific boiling points (190-260°C) and controlling viscosity within the range of 1.5-10 mPa·s at 25°C. These parameter changes ensure the ink maintains stability for light fastness while preserving adequate流动性 for reliable ejection and preventing nozzle clogging.
3Manufacturing precision
If dyes with high color developability are used, then color intensity improves, but hue changes occur during long-term outdoor exposure
Solution Approach 1:
The patent creates a composite ink system combining dyes containing copper or chromium with specific cyclic amides. This composite formulation achieves high color developability through the dye components while the cyclic amide matrix stabilizes the hue during long-term outdoor exposure, particularly for blue colors in the 260-310 degree range, preventing the hue changes that occur with conventional high-intensity dyes.
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 composition achieves high color developability and light fastness for hues in the range of 260 to 310 degrees without color mixing, while maintaining continuous ejection stability and reducing the formation of foreign matter, outperforming traditional methods in color reproduction and durability.
Implementation Method 1
5% to 30% by mass of a cyclic amide that is liquid at a normal temperature of 25 °C and has a normal boiling point at 1 atm in the range of 190°C to 260°C
Implementation Method 2
an alkyl polyol for moisture retention
Data Source
Figure 1~2
AI summary
An ink jet ink composition for textile printing including a dye containing copper or chromium and 5% to 30% by mass of a cyclic amide that is liquid at normal temperature and that has a normal boiling point in the range of 190°C to 260°C, wherein the hue angle ∠h° defined by the CIELAB color space on a recording medium ranges from 260 to 310 degrees.