Textile Ink Composition Using Cyclic Amide for Hue Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Ink jet textile printing faces challenges in maintaining color stability and light fastness, particularly for hues in the 260 to 310 degree range, due to differences in light fastness between dyes and temporal hue changes in printed textiles.
Innovation Solution
An ink jet ink composition containing a dye with copper or chromium and 5% to 30% cyclic amide with a normal boiling point between 190° C. to 260° C., which enhances color developability and stability without color mixing, and includes a pretreatment process with alkaline or acidic agents for improved dyeing affinity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional ink jet textile printing uses standard dye inks, then the printing process is simple and fast, but the temporal hue change occurs and light fastness is poor
Solution Approach 1:
The patent uses composite dyes comprising multiple dye components with different molecular structures and color characteristics. Specifically, it combines dyes containing copper or chromium metals with organic dye molecules to create a composite coloring system that achieves both high light fastness and temporal hue stability through synergistic effects of the different dye components
Solution Approach 2:
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 with specific hue angles (260-310 degrees). These parameter changes optimize the ink's interaction with textile fibers and improve the durability and stability of the printed colors under various conditions
2Adaptability or versatility
If color mixing of different ink colors is used to create desired hues, then a broader color range can be achieved, but color developability decreases and hue stability deteriorates
Solution Approach 1:
The patent applies local quality by using a single ink composition containing a dye with a specific hue angle range (260-310 degrees) that directly produces the desired blue color without requiring mixing. This localized approach to color generation maintains high color developability and hue stability while achieving the target color range
3Ease of operation
If reactive groups are added to enable textile printing, then dyeing affinity improves, but storage stability deteriorates due to decomposition
Solution Approach 1:
The patent incorporates reactive groups into the dye molecular structure in advance during dye synthesis, but these groups remain dormant during ink storage. The reactive groups become activated only when the ink is applied to textile and exposed to appropriate conditions (such as pH change or heat), thereby maintaining both storage stability and dyeing affinity
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 achieves high color developability and reduced temporal hue change, ensuring higher light fastness and ejection reliability in printed textiles without the need for color mixing, thereby improving the overall quality and longevity of printed images.
Implementation Method 1
An ink jet ink composition for textile printing contains a dye containing copper or chromium, and 5% to 30% by mass of a cyclic amide that is liquid at normal temperature and has a normal boiling point in the range of 190° C. to 260° C.
Implementation Method 2
a dye containing copper or chromium
Data Source
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.