Hexamethylenetetramine (Hexamine) is a crystalline, solid material, which is produced starting from Formaldehyde and Ammonia and which is mainly used in the resin and rubber industry.

According to the MEISSNER process, both starting materials are introduced in gaseous state into a liquid reaction phase where the formation of Hexamine takes place. Absorption and reaction of the gases as well as Hexamine crystallisation take place in the same specially designed reactor. The MEISSNER process features highly favourable consumption figures.

A patented process variant involving catalytic off-gas treatment allows for even lower steam consumption figures while completely avoiding the formation of waste water.