Description of the A2P17 accelerator additive from the RM professional brand:
RM A2P17 Drying Accelerator is an additive used to reduce the drying time of low-solvent 2K primers and Clearcoats. This accelerator increases the reactivity of the products with which it is mixed, making it possible to sand or polish without waiting too long. This product is packaged in 1L jars.