Optical Lens Thermoplastic Resin With Localized Aromatic Units

Solution Overview

Problem

Existing optical resins lack a balance of high aliphatic content for environmental considerations while maintaining excellent heat resistance and optical properties such as refractive index and Abbe number.

Innovation Solution

A thermoplastic resin comprising a structural unit derived from a monomer with a specific structure, including a phenyl group and a biphenyl group, which enhances the aliphatic content and improves heat resistance without compromising optical properties.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If aliphatic resins are used to increase environmental compatibility, then environmental friendliness is improved, but heat resistance deteriorates due to lower glass transition temperature

Engineering Contradiction:

Improveenvironmental friendlinessVSAvoidheat resistance

Core Design Contradiction:

Object-affected harmful factorsVSTemperature

Solution Approach 1:

The patent creates a composite resin system combining aliphatic polyester backbone with aromatic ring structures (phenyl, naphthyl, or biphenyl groups) as side chains or cyclic components. This composite structure integrates the environmental benefits of aliphatic resins with the thermal stability of aromatic components, achieving both eco-friendliness and heat resistance simultaneously

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The patent introduces aromatic ring structures at specific local positions within the polymer chain - either as side chains attached to the aliphatic backbone or as cyclic components in the main chain. This localized aromatic character provides heat resistance only where needed, while the majority of the polymer maintains its aliphatic structure for environmental compatibility

Inventive Principle:

Principle #3Local quality

2Temperature

If aromatic resins are used to improve heat resistance, then heat resistance is improved, but environmental friendliness deteriorates due to lower aliphatic content

Engineering Contradiction:

Improveheat resistanceVSAvoidenvironmental friendliness

Core Design Contradiction:

TemperatureVSObject-affected harmful factors

Solution Approach 1:

The patent creates a composite resin system combining aliphatic polyester backbone with aromatic ring structures (phenyl, naphthyl, or biphenyl groups) as side chains or cyclic components. This composite structure integrates the environmental benefits of aliphatic resins with the thermal stability of aromatic components, achieving both eco-friendliness and heat resistance simultaneously

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The patent introduces aromatic ring structures at specific local positions within the polymer chain - either as side chains attached to the aliphatic backbone or as cyclic components in the main chain. This localized aromatic character provides heat resistance only where needed, while the majority of the polymer maintains its aliphatic structure for environmental compatibility

Inventive Principle:

Principle #3Local quality

3Illumination intensity

If conventional resins are used to achieve high refractive index, then optical properties are improved, but aliphatic content deteriorates reducing environmental compatibility

Engineering Contradiction:

Improverefractive indexVSAvoidenvironmental friendliness

Core Design Contradiction:

Illumination intensityVSObject-affected harmful factors

Solution Approach 1:

The patent introduces aromatic ring structures at specific local positions within the polymer chain - either as side chains attached to the aliphatic backbone or as cyclic components in the main chain. This localized aromatic character provides heat resistance only where needed, while the majority of the polymer maintains its aliphatic structure for environmental compatibility

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent creates a composite resin system combining aliphatic polyester backbone with aromatic ring structures (phenyl, naphthyl, or biphenyl groups) as side chains or cyclic components. This composite structure integrates the environmental benefits of aliphatic resins with the thermal stability of aromatic components, achieving both eco-friendliness and heat resistance simultaneously

Inventive Principle:

Principle #40Composite materials

Data Source

PatentUS12509579B2Thermoplastic resin and optical lens including same

Publication Date: 2025.12.30 MITSUBISHI GAS CHEM CO INC

AI summary

A thermoplastic resin including a constituent unit (A) derived from a monomer represented by general formula (1). In general formula (1), R1 and R11 each independently represent a hydrogen atom, an aryl group having 6-12 carbon atoms, or a linear or branched alkyl group having 1-4 carbon atoms, and X represents one of general formulas (a) to (d). In general formulas (a) to (d), R21 to R57 each independently represent a hydrogen atom, a fluorine atom, a chlorine atom, a bromine atom, a linear or branched alkyl group having 1-4 carbon atoms, or a linear or branched alkoxy group having 1-7 carbon atoms.