Preparation of 2H‐1,4‐Benzoxazin‐2‐one Derivatives under Heterogeneous Conditions via Domino Process

Carbonate on polymer is a valuable solid supported reagent (SSR) to promote, under eco‐friendly conditions, the preparation of 2H‐1,4‐benzoxazin‐2‐one derivatives starting from β‐nitroacrylates and aminophenols via a domino process.     

共聚法改性苯并(口恶)嗪/环氧树脂体系的性能

通过力学性能、热失重、动态粘弹谱和扫描电子显微镜研究了增韧剂对苯并(口恶)嗪/环氧树脂体系性能的影响.研究表明,液体聚硫橡胶通过共聚法改性苯并(口恶)嗪/环氧树脂体系,不仅可以提高树脂体系的耐热性能,还可以显著提高树脂体系的冲击强度和拉伸强度;而且明显好于共混法改性以及其它增韧剂改性.