Thiol Compound Photodecolorization for Transparent Curable Resins
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Solution Overview
Problem
Thiol compounds used in curable resins often exhibit undesirable coloring, which complicates their use in applications requiring transparency, such as optical materials and exterior surfaces.
Innovation Solution
A method involving a light emission process is applied to colored thiol compounds or compositions containing them, utilizing light with a wavelength of 250 nm to 600 nm to reduce their coloring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If thiol compounds are used to improve curability of curable resins, then curability is improved, but coloring occurs making the resin unsuitable for transparent applications
Solution Approach 1:
The patent applies light irradiation (250-600 nm) to convert the harmful coloring effect into a beneficial decolorization effect. The light energy breaks down colored impurities and by-products in the thiol compound, transforming the harmful coloring into a useful decolorization process that maintains curability while achieving transparency.
Solution Approach 2:
The patent changes the optical parameters of the thiol compound by irradiating it with light in the 250-600 nm wavelength range. This parameter change (light exposure) modifies the chemical structure of colored impurities, reducing the Hazen color number from typically high values to below 100, thereby achieving transparency while preserving the thiol compound's curability.
2Object-generated harmful factors
If conventional decolorization methods are used, then coloring is reduced, but additional facilities and processes are required increasing complexity
Solution Approach 1:
The thiol compound undergoes self-decolorization when exposed to light in the 250-600 nm range. This eliminates the need for external decolorization facilities such as activated carbon filters or chemical decolorizing agents. The compound essentially serves itself by using light energy to break down colored impurities, thereby reducing device complexity while achieving decolorization.
Solution Approach 2:
The patent replaces mechanical/chemical decolorization systems (such as filtration, adsorption, or chemical treatment) with a photochemical process. Instead of using physical facilities to remove color, the system uses light irradiation to chemically transform colored impurities into colorless products, thereby substituting complex mechanical systems with a simpler optical process.
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 method effectively decolorizes thiol compounds, reducing their Hazen color number to suitable levels for use in transparent applications.
Implementation Method 1
a light emission process in which light is emitted to a colored thiol compound or a composition containing the thiol compound
Data Source
AI summary
A method for producing a thiol compound including a light emission process in which light is emitted to a colored thiol compound or a composition containing the thiol compound. In the light emission process, it is preferable to emit light including light with a wavelength of 250 nm to 600 nm to the composition.