Pentaerythritol is a finely crystalline material, which is produced starting from Formaldehyde and Ammonia and which is predominantly used in the manufacture of alkyd resins. Pentaerythritol is synthesised from Formaldehyde and Acetaldehyde in liquid reaction phase with the aid of an alkaline catalyst.

In contrast to conventional batch processes, the process offered by MEISSNER is a fully continuous one allowing precise control of the reaction conditions in the synthesis section. This enables, for example, adjustment of the amount of Di-Pentaerythritol - a valuable by-product - in the synthesis solution.

By employing Soda Lye as catalyst, and by carrying out the individual partial reactions in separate and specially designed reactors, the formation of undesired by-products is minimised. Thanks to this, and by using a continuously operated crystallisation section for product separation which works extremely efficiently due to a cleverly devised internal recycling, very favourable consumption figures and excellent product qualities can be achieved.