Polymerizable Compounds for UV Photopolymerization
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Solution Overview
Problem
Existing polymerizable compounds face challenges such as difficult synthesis, low yields, slow or incomplete polymerization, low stability, and limited UV absorption, particularly at longer wavelengths, which hinders their application in optoelectronic devices and other applications.
Innovation Solution
Development of polymerizable compounds with specific structural formulas, such as P-Sp-A1-(Z1-A2)z-Rb, that exhibit fast polymerization, high stability, and high UV absorption, particularly in the range of 300-380 nm, along with improved solubility in organic solvents and liquid crystalline media.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If polymerizable compounds are synthesized using conventional methods, then the synthesis process is simple, but the yield is low and the polymerization is slow or incomplete
Solution Approach 1:
The patent modifies the chemical structure of polymerizable compounds by introducing specific functional groups (acrylate, methacrylate, oxetane, epoxide) and adjusting molecular weight and purity parameters to achieve fast and complete polymerization while maintaining simple synthesis procedures
Solution Approach 2:
The invention uses composite polymerizable compounds containing multiple functional groups and specific structural motifs (such as compounds with both acrylate and methacrylate groups, or compounds with oxetane and epoxide groups) that synergistically enhance polymerization performance
2Use of energy by moving object
If polymerizable compounds are used for UV photopolymerization, then the polymerization can be initiated by UV light, but the absorption is low in the desired UV wavelength range
Solution Approach 1:
The patent introduces chromophoric functional groups (acrylate, methacrylate, oxetane, epoxide) with specific UV absorption characteristics to enhance absorption in the 200-400 nm range while maintaining polymerization stability through controlled functional group selection and molecular design
3Reliability
If polymerizable compounds are synthesized with high purity, then the polymerization is complete and fast, but the synthesis complexity increases
Solution Approach 1:
The patent optimizes synthesis parameters including reaction conditions, reagent ratios, and purification methods to achieve high purity and complete polymerization while controlling synthesis complexity through standardized procedures and efficient work-up methods
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 compounds demonstrate quick and complete UV photopolymerization with low residual monomer, high stability, and enhanced solubility, making them suitable for optoelectronic applications and other uses requiring efficient polymerization at longer UV wavelengths.
Implementation Method 1
high UV absorption, particularly at longer wavelengths... UV absorption in the range of 300-380 nm
Implementation Method 2
polymerizable compounds which can be advantageously polymerized by in-situ polymerization, for example UV-photopolymerization... quick and complete UV photopolymerization
Data Source
AI summary
Polymerizable compounds, processes and intermediates for their preparation, compositions containing them, polymers made from the compounds or compositions, and uses of the polymerizable compounds, compositions and polymers.