Optical-grade polycarbonate composition

• Main Authors: LI CHENG, LUO JIAHUI, LI CUN, LI QIANG, WANG XIAODONG, GAO JUNMIN
• Format: Patent
• Language: Chinese; English
• Published: 17.05.2024
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

The present invention relates to a polycarbonate composition for optical applications, which contains an aromatic polycarbonate resin (A), a polymonothiocarbonate (B) and a boric acid compound (C). The content of the polymonothiocarbonate (B) is 0.003-5 parts by mass and the content of the boric acid compound is 2-30 ppm by mass per 100 parts by mass of the aromatic polycarbonate resin (A). The polycarbonate resin composition provided by the invention has excellent test piece YI during high-temperature injection molding. The polycarbonate composition is subjected to injection molding at the temperature of 310-330 DEG C, the test piece YI of the polycarbonate composition does not exceed 1.20, meanwhile, the polycarbonate composition stays in an injection molding machine for 10 min and then is subjected to injection molding, and the difference value YI between the test piece YI and the initial test piece YI does not exceed 0.05. 本发明涉及一种光学级应用聚碳酸酯组合物，其含有芳香族聚碳酸酯树脂(A)、聚单硫代碳酸脂(B)和硼酸类化合物(C)。相对于所述100质量份的芳香族聚碳酸酯树脂(A)，含