Back to results
US 2025/0188024 A1Published application
Method of producing pentaerythritol mercaptocarboxylate, polymerizable composition, resin, optical material, and spectacle lens
AssigneeHoya Lens Thailand Ltd.
InventorMasahisa KOUSAKA
Life of this patent
Estimating the term…
Abstract
A method of producing pentaerythritol mercaptocarboxylate including subjecting a mercaptocarboxylic acid and pentaerythritol to a dehydration reaction under solvent-free conditions, a polymerizable composition containing the pentaerythritol mercaptocarboxylate, a resin which is a cured product of the polymerizable composition, an optical material containing the resin, and a spectacle lens containing the resin.
Claims15
A method of producing pentaerythritol mercaptocarboxylate, comprising
- subjecting a mercaptocarboxylic acid and pentaerythritol to a dehydration reaction under solvent-free conditions.
Dependencies are inferred from the claim text.