UV Curable Ink Composition with Metal Additives for Stability
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Solution Overview
Problem
Ultraviolet curable ink jet compositions face challenges in achieving high curing properties and manufacturing efficiency while minimizing foreign substance precipitation, with existing methods requiring extensive moisture removal that complicates the process and reduces efficiency.
Innovation Solution
Incorporating a specific amount of metal elements like Li, Na, K, Ag, Mg, Ca, Ba, Zn, Fe, Sn, Al, and Zr, along with a controlled amount of moisture (0.05-1.0 mass %) in the ultraviolet curable composition, and using a polymerizable compound with a vinyl ether group, to enhance curing properties and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the amount of impurities in the ultraviolet curable composition is decreased to suppress foreign substance precipitation, then the preservation stability is improved, but the curing properties decrease
Solution Approach 1:
The patent changes the chemical composition parameters by introducing specific metal elements (Li, Na, K, Ag, Mg, Ca, Ba, Zn, Fe, Sn, Al, or Zr) at controlled concentrations (10-250 ppm). This parameter adjustment allows the composition to maintain both preservation stability and curing properties by creating a balanced chemical environment that supports polymerization while preventing foreign substance precipitation.
Solution Approach 2:
The patent creates a composite composition by combining the polymerizable compound with trace amounts of multiple metal elements. This composite approach leverages the synergistic effects of different metal elements to simultaneously improve preservation stability and maintain curing properties, resolving the contradiction between these two requirements.
2Reliability
If the amount of water in the ultraviolet curable composition is decreased to a maximum extent to suppress foreign substance precipitation, then the preservation stability is improved, but excessive processes and time are required for eliminating moisture, decreasing manufacturing efficiency
Solution Approach 1:
The patent optimizes the water content parameter to a specific range (0.05-1.0 mass %) rather than eliminating it completely. This parameter optimization achieves preservation stability while avoiding the need for excessive moisture elimination processes, thereby maintaining manufacturing efficiency.
3Manufacturing precision
If a polymerizable compound with high curing speed is used to improve curing properties, then the curing efficiency is improved, but it becomes difficult to make curing properties and preservation stability compatible at a high level
Solution Approach 1:
The patent introduces metal elements as intermediary substances that mediate between the polymerizable compound and the curing process. These metal elements act as catalysts or promoters that enhance curing properties while simultaneously contributing to preservation stability, allowing both requirements to be satisfied at a high level.
Solution Approach 2:
The patent creates a composite system combining the polymerizable compound with multiple metal elements (Li, Na, K, Ag, Mg, Ca, Ba, Zn, Fe, Sn, Al, or Zr). This composite formulation enables the system to achieve both high curing speed and high preservation stability through the synergistic interaction of its components.
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
This approach allows for improved curing properties, preservation stability, and reduced foreign substance precipitation, thereby increasing manufacturing efficiency and maintaining high performance in ink jet recording methods.
Implementation Method 1
an ink composition which is cured by ultraviolet irradiation
Data Source
AI summary
An ultraviolet curable composition includes a polymerizable compound and is stored in a storage body, in which an amount of water is greater than or equal to 0.05 mass % and less than or equal to 1.0 mass % with respect to a total amount of the ultraviolet curable composition, a content of at least one metal element selected from a group consisting of Li, Na, K, Ag, Mg, Ca, Ba, Zn, Fe, Sn, Al, and Zr is greater than or equal to 10 ppm by mass, and a content of each metal element included in the group is less than or equal to 250 ppm by mass.