A sulfur-containing high refractive index multifunctional mercaptan compound
By controlling the side reaction of thiol oxidation coupling under inert gas protection and liquid sealing operation, sulfur-containing high refractive index multifunctional thiols were prepared, solving the problems of high equipment requirements, many side reactions and low purity in the existing technology, and realizing the preparation of optical materials with high transmittance and low yellowing.
Patent Information
- Application Number
- CN202610516030.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-04-19
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies for preparing polythiol compounds suffer from problems such as high equipment requirements, numerous side reactions, low product purity, high yellowing index, and difficulty in meeting the requirements for high transmittance and color.
Inert gas protection and liquid sealing were used to control the oxidative coupling side reaction of thiols. Thioether bonds and multiple thiol end groups were introduced through the thiol conversion stage to prepare sulfur-containing high refractive index multifunctional thiols. The skeleton was constructed by classic haloalcohol ring opening and nucleophilic substitution, and the thiourea method was used for thiol conversion.
This improves the purity and stability of the product, meeting the requirements of high transmittance and low yellowing index for advanced optical lenses and microlens arrays, and endows the polymer with good refractive index and thermomechanical stability.
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Abstract
Citation Information
Patent Citations
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