process for the production of artifacts from inorganic fasergut on siliconharzbasis.

摘要

Products made from inorganic fibres, optionally mixed with inorganic grains, flakes or powders, and aqueous silicone resin emulsions containing curing catalysts and emulsifiers are produced by adding the emulsion to the fibre material, shaping the fibre material treated in this way and subsequently curing the silicone resin, the curing catalysts employed being salts or chelates of trivalent iron. The preferred curing catalyst here is iron(III) acetylacetonate. The abovementioned products are preferably produced in a continuous process in which the aqueous silicone resin emulsion is sprayed onto the fibre material, the fibre material prepared in this way is compacted to the desired density, and the curing of the silicone resin is effected by blowing hot gases through the material. The curing of the silicone resin is preferably carried out over a period of from 5 to 8 minutes at a hot-gas temperature of from 150 to 300 DEG C.