Optical Component Resin Moisture Control for Turbidity Suppression
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Solution Overview
Problem
The production of resin optical components often results in foreign matter and white turbidity, particularly when producing large quantities, which affects the performance and marketability of the products.
Innovation Solution
A method for producing optical component resin involving a polymerizable composition of polythiol and polyisocyanate components, with a controlled moisture content in the additives, specifically between 1.0 ppm to 10 ppm by mass relative to the polyisocyanate component, to minimize foreign matter and white turbidity generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If polymerization is performed in several hundred units using conventional methods, then production volume is increased, but foreign matter and white turbidity are generated in some resins
Solution Approach 1:
The invention changes the moisture content parameter of the additive to a specific range (1.0-10.0 ppm relative to polyisocyanate component) to resolve the contradiction. This parameter optimization allows large-scale production while preventing foreign matter and white turbidity, thereby maintaining both high productivity and reliable product quality.
2Ease of manufacture
If additive with higher moisture content is used, then ease of manufacture is improved, but foreign matter and white turbidity occur in products
Solution Approach 1:
The invention optimizes the moisture content parameter of the additive to a specific range (1.0-10.0 ppm relative to polyisocyanate component). This balanced parameter setting maintains ease of manufacture while preventing the generation of foreign matter and white turbidity, effectively resolving the contradiction between manufacturing convenience and product quality.
3Reliability
If moisture content of additive is strictly controlled below 1.0 ppm, then product quality is improved, but manufacturing complexity increases
Solution Approach 1:
The invention sets the moisture content parameter to a practical range (1.0-10.0 ppm relative to polyisocyanate component) rather than extremely low values. This optimized parameter range achieves reliable product quality while avoiding excessive manufacturing complexity, as the control requirements are more manageable within this range compared to sub-1.0 ppm specifications.
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
This method effectively suppresses the generation of foreign matter and white turbidity, leading to improved product yield and quality of optical components such as spectacle lenses.
Implementation Method 1
a step of polymerizing the polymerizable composition
Data Source
AI summary
An embodiment of the present disclosure relates to a method for producing an optical component resin, suppressing generation of a foreign matter and occurrence of white turbidity, an optical component resin, a spectacle lens, and spectacles. A method for producing an optical component resin, including: a step of mixing a polythiol component, a polyisocyanate component, and an additive to obtain a polymerizable composition; and a step of polymerizing the polymerizable composition, in which the total moisture content of the additive before mixing is 1.0 ppm by mass or more and 10 ppm by mass or less with respect to the amount of the polyisocyanate component, an optical component resin obtained by the producing method, an optical component formed of the optical component resin, a spectacle lens including a lens substrate formed of the optical component resin, and spectacles including the spectacle lens.