The modification of HBP with about proper amount 70% of epoxy resin based the mole of the carboxyl group, showed obviously the improved photo reactivies and mechanical properties.

• 环氧树脂用量为HBP羧基物质量的70%25左右时，改性的超支化聚酯的光固化活性有明显提高，力学性能得到明显改进。