A polycarbonate resin, a method for preparing the same, and an application thereof
By introducing phenyl-p-tolyl carbonate terminal structures into polycarbonate resin and combining it with melt transesterification polycondensation, the problems of insufficient refractive index, yellowing resistance, and insufficient transparency of polycarbonate resin in optical lenses have been solved, achieving high refractive index, low yellowness index, and easy processing, making it suitable for optical lenses.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- WANHUA CHEM GRP CO LTD
- Filing Date
- 2026-06-05
- Publication Date
- 2026-07-17
AI Technical Summary
Existing polycarbonate resins used in optical lenses suffer from insufficient refractive index, poor high-temperature resistance, susceptibility to yellowing, and low transparency, making it difficult to meet the requirements for indoor and outdoor use of optical lenses.
A polycarbonate resin with a specific structure is prepared by reacting it with diphenyl carbonate in a melt transesterification polycondensation process using phenyl-p-tolyl carbonate as the terminal structural unit. This process results in a polycarbonate resin with high refractive index, resistance to yellowing, and easy processing.
The prepared polycarbonate resin has high refractive index, low birefringence, and low yellowness index, making it suitable for optical lenses, reducing the number of lenses, lowering costs, and improving lens transparency and heat resistance.
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Abstract
Citation Information
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