Mold for Manufacturing a Thermoset Optical Article, Method for Manufacturing the Mold and Method for Manufacturing the Thermoset Optical Article
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United States of America
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Issued Date -
Mar 13, 2025
app pub date -
Jul 18, 2022
filing date -
Jul 18, 2022
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Abstract
A mold for manufacturing a thermoset optical article having a high refractive index, a method for manufacturing the mold, and a method for manufacturing the article. The mold (1) is configured for manufacturing a thermoset optical article capable of being a poly thiourethane-based lens substrate having a refractive index of from 1.54 to 1.74, by casting a thermosetting material (6) into a molding cavity (5) of the mold, the mold comprising a mineral first mold part (2) having a mineral first inner surface (2a) modified by an organosilane mold-release agent. The modified first inner surface (4) comprises a product of a dehydration-condensation reaction of a hydrolysate of an aqueous alcohol solution of the organosilane mold-release agent applied to the mineral first inner surface (2a) and cured thereon, and the modified first inner surface (4) is devoid of a coating layer of particles and is configured to be directly in contact with the cast thermosetting material.
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