Spectacle lens and method for manufacturing same
AssigneeHoya Lens Thailand Ltd.
InventorsShigetoshi KONO, Shusaku SAKATA
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AssigneeHoya Lens Thailand Ltd.
InventorsShigetoshi KONO, Shusaku SAKATA
Estimating the term…
The invention provides an ampholytic surfactant containing quaternary ammonium salt as well as a preparation method and application of the ampholytic surfactant, and belongs to the field of materials. The amphoteric surfactant containing quaternary material, carrying out alkaline hydrolysis in ammonia water to obtain water-soluble carboxylate, and grafting quaternary ammonium salt groups on amide groups. Due to the existence of the quaternary ammonium salt group, the surfactant has good antibacterial property, and due to the fact that the surfactant has both a cationic group and an anionic group, the surfactant has good antistatic property. In application, the surfactant can be prepared with alkyl sodium sulfonate to obtain a pre-disinfection detergent for sanitary equipment and medical instruments. The surfactant and a thickener aid are dissolved in a solvent according to a certain ratio to obtain an antibacterial antifogging agent. The surfactant can also be added into a tanning agent to improve the antibacterial property of the tanning agent.
A spectacle lens comprising a substrate and an anti-fog layer, wherein the anti-fog layer has a thickness of 5 to 50 m, and the anti-fog layer contains a resin and an antibacterial agent.
Dependencies are inferred from the claim text.