The increase of fire safety is a hot topic. It is especially halogenated and brominated flame retardants that are both harmful to the health and also the environment, and they are for the most part prohibited in Europe. Mineral substitute additives are being used more and more. The demand here is mainly for aluminium hydroxide and magnesium hydroxide because of their unique properties: under elimination of water, these substances have a cooling and gas-thinning effect – already at temperatures below 200° C.
These flame retardants are used as protection for buildings, in plastics, electronic devices and textiles, whereby for each of these applications, different fineness values and particle properties are required. An additional challenge is to make sure that the end products do not get discoloured as the result of iron contamination.