Water-Soluble Acylphosphinate Composition for Fine Patterning
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Solution Overview
Problem
Current water-soluble compositions lack excellent storage stability and adaptability to a wide range of light sources, and are unable to form highly fine patterns effectively.
Innovation Solution
A water-soluble composition containing an acylphosphinate with a 2,4,6-trimethylphenyl group and a phenyl group, along with a compound having specific functional groups, which is curable by light or heat, allowing for the formation of a highly fine pattern with various light sources and exhibiting excellent storage stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional water-soluble compositions are used, then basic functionality is maintained, but storage stability is poor and pattern precision is insufficient
Solution Approach 1:
The patent modifies the chemical structure of the photopolymerization initiator by changing parameters such as introducing a 2,4,6-trimethylphenyl group and specific functional groups (carboxyl, hydroxyl, or carboxylate) to achieve both excellent storage stability and high pattern precision in the water-soluble composition
Solution Approach 2:
The patent creates a composite system by combining the specially structured acylphosphinate initiator with water-soluble polymerizable compounds and specific functional groups, resulting in a composition that simultaneously achieves storage stability and fine pattern formation capability
2Adaptability or versatility
If conventional initiators are used, then basic photopolymerization occurs, but adaptability to wide range of light sources is limited
Solution Approach 1:
The patent designs the acylphosphinate initiator with a specific molecular structure containing a 2,4,6-trimethylphenyl group and functional groups (carboxyl, hydroxyl, or carboxylate) that enable it to function effectively across a wide range of light sources including UV, visible light, and LED wavelengths, while maintaining excellent storage stability
Solution Approach 2:
The patent optimizes the chemical parameters of the initiator by introducing specific functional groups and molecular structures that broaden the absorption spectrum, allowing the initiator to be excited by multiple light sources while preserving storage stability through controlled molecular design
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 achieves excellent storage stability and the ability to form highly fine patterns with a wide range of light sources, making it suitable for applications in paints, inks, adhesives, and optical films, while the acylphosphinate enhances the composition's sensitivity and solubility.
Implementation Method 1
a water-soluble composition which has excellent storage stability and is adaptable to a wide range of light sources and capable of forming a highly fine pattern
Implementation Method 2
a method of producing a cured product of the same; a cured product of the same
Data Source
AI summary
Provided are: a water-soluble composition which has excellent storage stability and is adaptable to a wide range of light sources and capable of forming a highly fine pattern; a method of producing a cured product of the same; a cured product of the same; and an acylphosphinate. The water-soluble composition contains: an acylphosphinate (A) represented by Formula (I) below, wherein X1 represents an aryl group having 6 to 15 carbon atoms; X2 represents a linear alkyl group having 1 to 8 carbon atoms or the like; Am+ represents an alkali metal ion or the like; and m represents a number of 1 to 3; and a compound (B) having a group represented by Formula (II) below, wherein R1 represents a hydrogen atom or the like; Z1 represents an oxygen atom or the like; R2 represents a hydrogen atom or the like; Z2 represents an alkylene group having 1 to 6 carbon atoms; n represents a number of 0 to 30; * means a bond; and, when the compound (B) has plural groups represented by Formula (II), plural R1's, Z1's, Z2's and n's are each optionally the same or different.