Photosensitive Composition with Metal Oxide Particles for High-Index Curing
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Solution Overview
Problem
Existing photosensitive compositions face challenges in achieving good curability, particularly when forming cured products with high refractive indices.
Innovation Solution
Incorporating a photopolymerizable compound with a specific structure, such as a compound represented by formula (A1), along with metal oxide particles and an initiator, to enhance curability and form a cured product with improved properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a photosensitive composition is formulated to achieve high refractive index using metal oxide particles, then the refractive index of the cured product is improved, but the curability of the composition deteriorates
Solution Approach 1:
The patent changes the chemical structure parameters of the photopolymerizable compound by introducing specific groups (carboxyl, hydroxyl, or amino groups) at defined positions relative to the metal oxide particles. This structural modification enables the compound to maintain good curability while allowing the metal oxide particles to provide high refractive index properties in the cured product.
Solution Approach 2:
The patent creates a composite photosensitive composition combining photopolymerizable compounds with specific functional groups and metal oxide particles. This composite structure allows the material to simultaneously achieve both good curability (through the photopolymerizable compound) and high refractive index (through the metal oxide particles), resolving the contradiction between these two properties.
2Illumination intensity
If metal oxide particles are dispersed in a photosensitive composition to form highly refractive material, then the refractive index is improved, but the ease of curing deteriorates
Solution Approach 1:
The photopolymerizable compound acts as an intermediary between the metal oxide particles and the curing process. It contains functional groups that can interact with the metal oxide particles while also being capable of undergoing photopolymerization, thus facilitating the curing process despite the presence of metal oxide particles that would otherwise hinder it.
Solution Approach 2:
By modifying the chemical parameters of the photopolymerizable compound (adding carboxyl, hydroxyl, or amino groups at specific positions), the patent improves the compound's compatibility with metal oxide particles and its curability, making the overall composition easier to cure while maintaining high refractive index properties.
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 exhibits good curability and can form a cured product with high refractive index, addressing the challenges of curability in existing photosensitive compositions.
Implementation Method 1
a photopolymerizable compound (A), inorganic particles (B), and an initiator (C), and exhibiting good curability
Data Source
AI summary
A photopolymerizable compound (A) and inorganic particles (B), and exhibiting good curability in a case that an initiator is added; a photosensitive composition including a photopolymerizable compound (A), inorganic particles (B), and an initiator (C), and exhibiting good curability; and a cured product of the photosensitive composition are provided. A compound having a specific structure including a radically polymerizable group-containing group is used as a photopolymerizable compound (A) in a composition including the photopolymerizable compound (A) and metal oxide particles (B), or a photosensitive composition including the photopolymerizable compound (A), metal oxide particles (B), and an initiator.