Peroxan A40L (PAA)

Peroxan A40L is an acetyl acetone peroxide formulation for the curing of unsaturated polyester resins in the presence of a cobalt accelerator at room and elevated temperatures. With the curing system Peroxan A40L /cobalt acelerator a much faster speed of cure can be achieved that with curing systems based on a MEKP plus cobalt accelerator. Peroxan A40L is particulary suitable in those applications where a fast mould-turnover is requiered, e.g. for the cold press moulding or resin injection moulding techniques. The system Peroxan A40L /cobalt accelerator will give a higher peak exhotherm than a standar MEKP/cobalt accelerator system. Due to this fact, is it recommendable to avoid the production of too thick laminates in one operation. At low temperatures a reasonable speed of cure is still obtained when Peroxan A40L is used.