Polymerizable Composition for Inkjet Recording with High Sensitivity Curing
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Solution Overview
Problem
Current polymerizable compositions for inkjet recording face challenges in achieving high sensitivity curing while maintaining storage stability and ensuring strong adhesion and strength of the cured film, particularly when using chain-transfer agents like thiol compounds.
Innovation Solution
A polymerizable composition incorporating a compound represented by Formula (1) with a highly polar substituent, a polymerization initiator, and a monofunctional or polyfunctional polymerizable compound, which reduces dissolved oxygen inhibition and enhances crosslink density and adhesion to the base material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high sensitivity curing is realized by increasing the reactivity of the polymerizable composition, then the curing speed and productivity are improved, but undesired curing reactions occur due to heat or light during storage, resulting in reduced storage stability
Solution Approach 1:
The patent introduces a specific compound of Formula (1) with a highly polar substituent that has a dual effect: it accelerates curing reaction when energy is applied (improving productivity) while simultaneously suppressing spontaneous curing during storage (maintaining stability). This parameter change in molecular structure resolves the contradiction between curing speed and storage stability.
2Reliability
If a chain-transfer agent such as a thiol compound is added to adjust crosslink density or molecular weight for appropriate physical properties, then the curability is improved, but the storage stability of the ink composition is lowered
Solution Approach 1:
The patent extracts or removes the chain-transfer agent (thiol compound) from the composition and replaces it with the compound of Formula (1). This substitution eliminates the storage stability problem caused by thiol compounds while maintaining the ability to control crosslink density and achieve appropriate physical properties through the highly polar substituent of Formula (1).
3Strength
If the addition amount of chain-transfer agent is increased to control crosslink density, then the physical properties of the cured film are improved, but the storage stability of the ink composition is significantly reduced
Solution Approach 1:
The compound of Formula (1) acts as an intermediary substance that performs multiple functions: it controls crosslink density to achieve desired physical properties of the cured film, while simultaneously preventing premature curing during storage. The highly polar substituent serves as the key structural feature that enables this mediating role between crosslinking control and storage stability.
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 composition cures with high sensitivity, forming a cured film with excellent adhesion and strength, improving the storage stability and physical properties of the inkjet recording process.
Implementation Method 1
a polymerization initiator and a polymerizable compound and which is cured when active species that have been generated from the polymerization initiator by application of energy allow the polymerization of the polymerizable compound to proceed
Data Source
AI summary
A polymerizable composition including: a compound represented by the following Formula (1); a polymerization initiator; and a polymerizable compound having a chemical structure different from the compound represented by the following Formula (1), an inkjet ink composition including the polymerizable composition, an inkjet ink recording method using the inkjet ink composition, and recorded matter. In Formula (1), each of R1 and R2 independently represents a hydrogen atom or a monovalent organic group and R3 represents a monovalent organic group.