Abstract: The invention relates to a fire-resistant carpet for aircraft interiors, comprising a machine-woven material, forming a working surface, made from a main yarn, essentially of a fire-resistant thermoplastic synthetic fibre material and an active yarn, essentially of a fire-resistant thermoplastic synthetic fibre material, further comprising a non-woven material, in particular, a needled non-woven material, with a specific weight per area of a maximum of 300 g/m2, preferably a maximum of 250 g/m2, essentially made from a fire-resistant thermoplastic synthetic fibre material and an intermediate layer containing adhesive between the non-woven material and the flat material with a specific weight per area of a maximum of 250 g/m2, preferably a maximum of 200 g/m2, in particular 80 g/m2, and particularly preferred, a maximum of 50 g/m2.

Abstract: Piece-form materials which comprise 5-100% by mass calcium formate and 95-0% by mass additives and have particle sizes of 0.2-5 mm can be prepared from finely crystalline calcium formate and the additives by compression and, if necessary, subsequent comminution and/or fractionation to set the particle size.

Abstract: Piece-form materials which comprise 5-100% by mass calcium formate and 95-0% by mass additives and have particle sizes of 0.2-5 mm can be prepared from finely crystalline calcium formate and the additives by compression and, if necessary, subsequent comminution and/or fractionation to set the particle size.

Abstract: N-phenyl-1-naphthylamine can be prepared by reacting aniline and 1-naphthylamine in the liquid phase at 100-400.degree. C. at a reaction pressure which is higher than atmospheric pressure. Boron and fluorine-containing catalysts, mono or polysulfonic acids, iodine, PCl.sub.3, PCl.sub.5, or POCl.sub.3, for example, may be used as catalysts.