Textile Inkjet Ink Composition for Light-Stable Blue and Brown Hues
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Solution Overview
Problem
Textile printing ink jet methods face challenges in maintaining color stability and light resistance, particularly for hues in the bluish and brownish color ranges, due to differences in light resistance between dyes used in ink compositions.
Innovation Solution
A textile printing ink jet ink composition set is developed, incorporating chromium-containing dyes and copper-containing dyes, along with specific cyclic amides and alkyl polyols, to achieve stable color reproduction with improved light resistance for hues within defined CIELAB color spaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional ink sets including YMCK four colors are used for ink jet textile printing, then the apparatus can record images at high speed with relatively inexpensive equipment, but the hue range obtained by screen textile printing method cannot be completely reproduced and hue changes easily occur in long-term outdoor exposure
Solution Approach 1:
The patent changes the chemical parameters of the ink composition by incorporating specific dyes (C.I. Reactive Blue 13, C.I. Reactive Orange 35, C.I. Reactive Orange 12, C.I. Reactive Orange 99) with controlled concentrations. This parameter change ensures that the ink maintains stability during high-speed printing while preventing hue changes during outdoor exposure, thus resolving the contradiction between productivity and reliability.
Solution Approach 2:
The patent uses composite ink formulations combining multiple reactive dyes with specific properties. By creating a composite material that integrates dyes with complementary characteristics (light resistance, color fastness), the system achieves both high-speed printing capability and long-term color stability, resolving the technical contradiction between speed and reliability.
2Adaptability or versatility
If dyes with different light resistance are used in ink compositions, then a wider color reproduction range can be achieved, but hue changes easily occur in specific hue ranges (bluish and brownish colors) during long-term outdoor exposure
Solution Approach 1:
The patent applies local quality by selecting dyes with specific properties for specific color ranges. For bluish hues (hue angle 260°-310°), it uses C.I. Reactive Blue 13 with proven light resistance. For brownish hues (hue angle 15°-80°), it combines C.I. Reactive Orange 35, 12, and 99 with appropriate light fastness. This localized optimization of dye selection maintains both color reproduction range and hue stability.
Solution Approach 2:
The patent carefully controls the concentration parameters of each dye component to achieve optimal performance. By adjusting the ratios and amounts of reactive dyes, the formulation achieves wide color reproduction while maintaining hue stability during outdoor exposure, resolving the contradiction between adaptability and composition stability.
Data Source
AI summary
A textile printing ink jet ink composition set includes a textile printing ink jet ink composition having a hue angle ∠h° within a range of 260° or more and 310° or less and a chroma C* of 45 or less, which are specified in the CIELAB color space, on a textile printing product after textile printing; and a textile printing ink jet ink composition having a hue angle ∠h° within a range of 15° or more and 80° or less and a chroma C* of 65 or less, which are specified in the CIELAB color space, on a textile printing product after textile printing.