High Refractive Index Resin Composition via Non-Aromatic Polymerization

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Solution Overview

Problem

Existing high refractive index materials, such as glass, are heavy and pose safety concerns, while polymer-based alternatives often fail to achieve high refractive indices and suitable molecular weights for thin, optically efficient applications.

Innovation Solution

A composition for polymerizing a high refractive index resin comprising specific compounds represented by Chemical Formulas 1, 2, and 3, which form a non-aromatic main chain with a three-dimensional amorphous structure, allowing for high refractive index resins with excellent optical characteristics and thin thickness.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If glass is used as a high refractive index material, then excellent refractive power is achieved, but safety is reduced and specific gravity increases

Engineering Contradiction:

Improverefractive powerVSAvoidspecific gravity

Core Design Contradiction:

Illumination intensityVSWeight of moving object

Solution Approach 1:

The patent changes the chemical composition parameters by incorporating specific heteroatoms (sulfur, selenium, tellurium) and controlling the ratios of different oxide components to achieve high refractive index while maintaining lower density compared to traditional glass materials

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent creates a composite glass-ceramic material system that combines the advantages of both glass and ceramic phases, achieving high refractive index through the synergistic effect of different material components while maintaining safety and reducing specific gravity

Inventive Principle:

Principle #40Composite materials

2Illumination intensity

If glass is used as a high refractive index material, then excellent refractive power is achieved, but safety is reduced

Engineering Contradiction:

Improverefractive powerVSAvoidsafety

Core Design Contradiction:

Illumination intensityVSReliability

Solution Approach 1:

The patent modifies the chemical composition by incorporating metal oxides with high refractive index contributions (TiO2, Nb2O5, Ta2O5) at controlled concentrations to enhance refractive power while maintaining the amorphous or fine-crystalline structure that provides safety and durability

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent develops a composite material system that integrates multiple oxide phases, where the combination of different materials provides both high refractive index and improved safety characteristics through enhanced mechanical strength and chemical stability

Inventive Principle:

Principle #40Composite materials

3Weight of moving object

If polymer-based materials are used to reduce weight, then specific gravity is reduced, but refractive index is insufficient

Engineering Contradiction:

Improvespecific gravityVSAvoidrefractive index

Core Design Contradiction:

Weight of moving objectVSIllumination intensity

Solution Approach 1:

The patent changes the molecular structure parameters by incorporating heavy atoms (sulfur, selenium, tellurium) and aromatic rings into the polymer chains, which increases electron density and thereby enhances the refractive index while maintaining the lightweight polymer base

Inventive Principle:

Principle #35Parameter changes

4Length of moving object

If higher refractive index is achieved, then lens thickness can be reduced, but material complexity increases

Engineering Contradiction:

Improvelens thicknessVSAvoidmaterial complexity

Core Design Contradiction:

Length of moving objectVSDevice complexity

Solution Approach 1:

The patent achieves high refractive index by adjusting compositional parameters within a systematic framework, using controlled variations of oxide ratios and metal content to optimize refractive index while maintaining manufacturability and avoiding excessive material complexity

Inventive Principle:

Principle #35Parameter changes

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 enables the production of high refractive index resins with superior optical properties, including birefringence, and allows for the creation of thinner, lighter optical materials suitable for various applications.

Implementation Method 1

a composition for polymerizing a high refractive index resin, including: a first compound represented by the following Chemical Formula 1; and one or more types of a second compound represented by the following Chemical Formula 2 and a third compound represented by the following Chemical Formula 3

Methodology Applied

Scientific EffectPolymerization: Photopolymerisation

Data Source

PatentEP4628515A1Composition for polymerizing high refractive index resin, high refractive index resin, and product comprising same

Publication Date: 2025.10.08 LG CHEM LTD

AI summary

The composition for polymerizing a high refractive index resin according to an exemplary embodiment of the present specification includes: a first compound represented by Chemical Formula 1; and one or more types of a second compound represented by Chemical Formula 2 and a third compound represented by Chemical Formula 3, and the high refractive index resin according to another exemplary embodiment of the present specification includes: a first unit represented by Chemical Formula 11; and one or more of a second unit represented by Chemical Formula 12 and a third unit represented by Chemical Formula 13.