Poly 74/75 Part X Accelerator
Poly 74/75 Part X Accelerator is used in small amounts to accelerate the cure of 74 Series, 75 Series and 77 Series liquid polyurethane rubbers. The addition of this product will also reduce the working time.
Poly 74/75 Part X Accelerator is used to cure Poly 74 Series, 75 Series and 77 Series polyurethane liquid mold rubbers more quickly. Part X is most useful when making brushed molds with Poly 74 Series rubbers to decrease the time between coats. By adding 3% Part X (by weight of the total mix) to 74-30 or 74-29, the working time is reduced to approximately 8 minutes (at 75°F). In the time it takes to mix the next batch, the previous layer gels enough to apply the subsequent coat. Demolding can be accomplished in as little as 4 hours after the final brushed layer is applied. Exercise caution when using Part X for poured molds since rapid onset of gelling may trap air bubbles on or near the surface of the master.