Optical resin composition and optical resin material prepared from same

• Main Authors: XIE YU, WANG KAI, GAO YANSHENG, LIU ZHENDONG, LUO JIANXUN, BA LONGHAN
• Format: Patent
• Language: Chinese; English
• Published: 09.10.2020
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

The present invention discloses an optical resin composition and an optical resin material prepared therefrom. The composition comprises, based on the total mass of the composition, (a) 45-65 wt%, preferably 50-60 wt%, of an isocyanate-terminated prepolymer; (b) 35 to 55 wt%, preferably 40 to 50 wt% of a thiol compound having at least two sulfydryl groups. The isocyanate-terminated prepolymer is prepared from the following raw materials: aliphatic isocyanate, an episulfide compound and a thioether compound with at least one hydroxyl group. The optical resin material prepared by taking the composition as a raw material has a high refractive index and also has excellent impact resistance and optical transparency. 本发明公开了一种光学树脂组合物及其制备的光学树脂材料，所述组合物包含：基于组合物的总质量，(a)异氰酸酯封端预聚物，用量为45～65wt％，优选50～60wt％；(b)具有至少两个巯基的硫醇化合物，用量为35～55wt％，优选40～50wt％；所述的异氰酸酯封端预聚物的制备原料包括脂肪族异氰酸酯、环硫化合物和具有至少一个羟基的硫醚化合物。该组合物为原料制备的光学树脂材料具有高折射率，同时还具有优异的抗冲击性和光学透明性。