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Author: Admin | 2025-04-27
Strontium nitrate, strontium oxalate and strontium peroxide. In a preferred embodiment, the one or more colourants and/or oxidising agents are selected from the group consisting of ammonium nitrate, barium aminotetrazole, barium carbonate, barium chlorate, barium nitrate, calcium carbonate, basic copper carbonate, basic copper nitrate, copper(I) chloride, copper(II) oxalate, copper oxychloride, copper powder, copper sulphate, potassium chlorate, potassium nitrate, sodium aluminium fluoride, sodium bicarbonate, sodium carbonate, sodium chlorate, sodium chloride, sodium nitrate, sodium oxalate, strontium aminotetrazole, strontium carbonate, strontium nitrate, strontium oxalate and strontium peroxide.Several of these compounds have both a colouring function, as well as an oxidising function, whereas others only act as a colourant, or only as an oxidising agent. Naturally, also any combination of these colourants and/or oxidising agents may be applied.The amount of colourants and/or oxidising agents taken together in the pyrotechnic composition of the invention can be 1-50 wt. % based on total weight of the composition, preferably 1-30 wt. %, more preferably 1-10 wt. %. Higher amounts of colourants and/or oxidising agents tend to increase smoke generation.The pyrotechnic composition of the invention can further comprise one or more pyrotechnic fuels. Such fuels are known in the art. The amount of pyrotechnic fuels in the composition is preferably 20-96 wt. % based on the total weight of the composition.The pyrotechnic composition can also comprise water, in particular during production processes. The amount of water used is preferably such that the weight ratio between water and fibrous nitrocellulose in the pyrotechnic composition is at least 1:3, more preferably in the range of 1:3-1:2. A pyrotechnic composition with a weight ratio between water and fibrous nitrocellulose of at least 1:3 is highly advantageous for transportation of highly nitrated nitrocellulose material, as explained above.Furthermore, the pyrotechnic composition can comprise a chlorine donor, in particular when aimed at generating coloured flames. Suitable chlorine donors are known to the person skilled in the art and include organic chlorinated substances, such as polyvinylchloride (PVC) and the like.In a further aspect, the invention is directed to a pyrotechnic composition obtainable by a method according to the invention. Such a pyrotechnic composition hence comprises
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