Abstract: There is disclosed a non-flammable rigid foam on the basis of phenolic resin and furane resin, containing aluminum hydroxide and further components as a filler system. The weight ratio of resin substance:filler substance is at least 1:2.5 and up to 1:3.2 and the bulk density is from 50 kg/m.sup.3 to 450 kg/m.sup.3. The resin compound is the reaction product obtained by the reaction with one another of50-62 weight parts resolic resin0-15 weight parts furanic resin25-40 weight parts furfuryl alcohol0.5-1.

Abstract: The non-flammable rigid foam e.g. used as a building material complies with the requirements of DIN 4102 and which provides a non-toxicity of the combustion fumes according to DIN 53436. It has a mass ratio of resin component: filler of at least 1:2.5 and a bulk density amounting to 50 kg/m.sup.3 to 450 kg/m.sup.3. The resin component is formed by reaction of50-62 mass parts resolic resin0-15 mass parts furane resin25-40 mass parts furfuryl alcohol0.5-11.5 mass parts foam stabilizerincluding 14-17 mass parts per 100 mass parts of resin component plus filler of a curing agent mixture of phosphoric acid, boronhydrofluoric acid, p-toluene sulphonic acid and water. The filler used is a mixture of40-55 mass % aluminium hydroxide10-35 mass parts boric acid2-7 mass parts sodium tetraborate5-10 mass parts manganese dioxide1-5 mass parts copper-II-oxide1-4 mass parts magnesium hydroxysilicate1-2 mass parts aluminium silicate.

Abstract: The non-flammable rigid foam e.g. used as a building material complies with the requirements of DIN 4102 and which provides a non-toxicity of the combustion fumes according to DIN 53436. It has a mass ratio of resin component:filler of at least 1:2,5 and a bulk density amounting to 50 kg/m.sup.3 to 450 kg/m.sup.3. The resin component is formed by reaction of50-62 mass parts resolic resin,0-15 mass parts furane resin,25-40 mass parts furfuryl alcohol,0,5-11,5 mass parts foam stabilizer including 14-17 mass parts per 100 mass parts of resin component plus filler of a curing agent mixture of phosphoric acid, boronhydrofluoric acid, p-toluene sulphonic acid and water. The filler used is a mixture of40-55 mass % aluminium hydroxide10-35 mass parts boric acid2-7 mass parts sodium tetraborate5-10 mass parts manganese dioxide1-5 mass parts kopper-II-oxide1-4 mass parts magnesium hydroxysilicate1-2 mass parts aluminium silicate.

Abstract: A combustion resistant material which will not produce toxic gases when subjected to heat, and which can be formed by moulding or by coating it onto a receiving surface whilst its constituents are reacting is produced by reacting a mixture of:62 to 76:percent by weight aluminium oxide or hydroxide12 to 16:percent by weight phenol resin11.5 to 17.5:percent by weight furfuryl alcoholwith sulphonic acid which serves as hardener, the proportion by weight of the sulphonic acid being from one-tenth to one-twentieth of the amount of aluminium oxide. The viscosity of the reaction mixture can be adjusted by addition of thinners such as butanol or butylglycol, or of thickeners such as chalk, particulate silicic acid, talc or magnesium oxide.

Abstract: A combustion resistant material which will not produce toxic gases when subjected to heat, and which can be formed by moulding or by coating it onto a receiving surface while its constituents are reacting is produced by reacting a mixture of:62 to 76: percent by weight aluminium oxide or hydroxide12 to 16: percent by weight phenol resin11.5 to 17.5: percent by weight furfuryl alcoholwith sulphonic acid which serves as hardener, the proportion by weight of the sulphonic acid being from one-tenth to one-twentieth of the amount of aluminium oxide. The viscosity of the reaction mixture can be adjusted by addition of thinners such as butanol or butylglycol, or of thickeners such as chalk, particulate silicic acid, talc or magnesium oxide.