Plant-Derived Polythiol Composition for Low-Haze Optical Materials

The patent changes the chemical parameter of the polyol by converting hydroxy groups to thiol groups through thiolation reaction. This parameter change transforms plant-derived polyol into polythiol, which maintains the benefit of non-fossil resource utilization while eliminating the harmful haze effect in the cured optical material.

The patent converts the harmful effect of using plant-derived polyol (which causes high haze) into a beneficial outcome by chemically transforming it into polythiol. The thiolation process converts the problematic hydroxy groups into thiol groups, turning the originally harmful plant-derived compound into a beneficial component that provides both sustainability and excellent optical properties.

The patent applies thiolation reaction to change the chemical structure of plant-derived polyol, converting hydroxy groups to thiol groups. This parameter change in the molecular structure enables the material to achieve precise control over optical properties while maintaining sustainability benefits.

The patent introduces thiolation reaction as an intermediary process between obtaining plant-derived polyol and using it in the polymerizable composition. This intermediary chemical transformation step is crucial for converting the raw plant-derived material into a form that delivers precise optical properties in the final cured product.