NEEDLE FELT OF MINERAL WOOL AND NEEDLING ADDITIVE, USE OF THE NEEDLING ADDITIVE TO NEEDLE MINERAL WOOL

• Main Author: Hunig Hagen
• Format: Patent
• Language: English; Slovenian
• Published: 28.02.2020
• Subjects: BRAIDING; CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMISTRY; COMPOSITIONS BASED THEREON; COTTON-WOOL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS,NON-WOVEN FABRICS; GLASS; JOINING GLASS TO GLASS OR OTHER MATERIALS; KNITTING; LACE-MAKING; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARYMATERIAL; METALLURGY; MINERAL OR SLAG WOOL; NON-WOVEN FABRICS; ORGANIC MACROMOLECULAR COMPOUNDS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS; TEXTILES; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRIMMINGS; WADDING

The present invention relates to formaldehyde-free and fluorine-free needling additive for the manufacture of needle felts of mineral wool, which contains an aqueous solution or an aqueous dispersion of at least one halogen-free cationic polymer on the basis of azacyclopropane (ethyleneimine). Needle felts of mineral wool that are produced using such needling additive virtually do not emit any aldehydes even in a use of up to 500°C, and are absolutely free of volatile fluorine-containing organic and inorganic compounds, in particular hydrogen fluoride. The needle felts in accordance with the present invention are best suited for heat insulation in household appliances such as ovens, especially those including a high-temperature cleaning program.