UV-Curable Ink Compounds Reducing Odor and Viscosity
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Solution Overview
Problem
Current inkjet recording systems using ultraviolet curing inks face challenges in achieving excellent polymerization properties with low odor and viscosity, as existing compounds often result in high viscosity or strong odors, making them unsuitable for ink applications.
Innovation Solution
The development of ink compositions containing specific compounds represented by chemical formulas 1, 2, 3, and 4, which lack carbonyl imino groups but include polar groups and ring structures, enhancing polymerization and photocurability while minimizing odor and viscosity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing compounds with carbonyl imino groups are used to achieve polymerization property, then polymerization property is improved, but odor and viscosity increase
Solution Approach 1:
The patent extracts and removes the carbonyl imino group from the molecular structure of the compound. This extraction eliminates the source of strong odor while maintaining the essential polymerization functionality through the retained carbon-carbon double bond and other structural features, thereby resolving the contradiction between polymerization property and odor.
Solution Approach 2:
The patent changes the chemical structure parameters by replacing the carbonyl imino group with alternative functional groups that maintain polymerization capability but reduce odor. The molecular weight and structural configuration are optimized to achieve low viscosity while preserving excellent polymerization properties through controlled functional group arrangement.
2Reliability
If existing compounds with carbonyl imino groups are used to achieve polymerization property, then polymerization property is improved, but viscosity increases
Solution Approach 1:
The removal of the carbonyl imino group reduces intermolecular forces and molecular weight, directly lowering viscosity. The patent maintains polymerization property through the preserved carbon-carbon double bond and optimized molecular structure, achieving low viscosity compatible with inkjet recording requirements.
Solution Approach 2:
The patent optimizes molecular weight and structural parameters to achieve low viscosity. By replacing heavy carbonyl imino groups with lighter alternative structures and controlling the arrangement of functional groups, the compound achieves viscosity suitable for inkjet application while maintaining excellent polymerization capability.
3Reliability
If compounds with polar groups and ring structures are used, then photocurability is improved, but molecular complexity increases
Solution Approach 1:
The patent introduces polar groups and ring structures at specific local positions within the molecular structure rather than throughout the entire molecule. This localized approach enhances photocurability at critical sites while keeping the overall molecular structure relatively simple and manageable, resolving the contradiction between photocurability and molecular complexity.
Solution Approach 2:
The patent creates a composite molecular structure combining simple base structures with specific functional elements (polar groups and ring structures). This composite approach achieves high photocurability through the functional elements while maintaining low overall molecular complexity through the simplicity of the base structure, enabling excellent inkjet recording performance.
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
These compounds provide excellent polymerization and photocurability with reduced odor and viscosity, making them suitable for use in inkjet recording systems, improving the performance and properties of the ink.
Implementation Method 1
ink jet recording system using ultraviolet curing ink has become appealing
Data Source
AI summary
Ink contains at least one of a compound represented by the following chemical formula 1, a compound represented by chemical formula 2, a compound represented by chemical formula 3, or a compound represented by chemical formula 4.