SINOMER® PM840-M20 is a modified polymercaptan curing agent. When mixed with epoxy resins (such as BER-128/E51) at a 1:1 ratio, it achieves rapid gelation and curing even at low temperatures and in thin films. It demonstrates significant advantages in rapid repair, winter construction, and low-temperature operations. This grade is specifically designed to cure standard epoxy resins within approximately 20 minutes, providing a balanced working time and fast curing speed.
