COMPOSITION SUITABLE FOR STICKING MINERAL FIBRES

• Main Authors: DE GOYS DE MEZEYRAC,CHARLES,FR, GICQUEL,BERNARD,FR, FUGIER,ROGER,FR, TETARD,SERGE,FR
• Format: Patent
• Language: English
• Published: 28.03.1988
• Edition: 4
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; GLASS; JOINING GLASS TO GLASS OR OTHER MATERIALS; LIME, MAGNESIA; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; MINERAL OR SLAG WOOL; ORGANIC MACROMOLECULAR COMPOUNDS; REFRACTORIES; SLAG; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TREATMENT OF NATURAL STONE

1. Aqueous composition of aminoplastic resin which can be used in a sizing composition for treating discontinuous mineral fibres, characterized in that the resin is obtained by condensation, in a basic medium, of formaldehyde, urea and melamine in the presence of a polymethylol compound having a functionality of at least 3 and the general formula : R-C-(CH2 OH)3 or R-C-(CH2 OH)2 -CH2 -O-CH2 -C(CH2 OH)2 -R wherein R is an aliphatic hydrocarbon radical which may or may not comprise a hydroxyl group ; - the molar ratio F/M of the number of mols of formaldehyde in relation to the number of mols of melamine being between (0.5 U/M + 1.5) and (3 U/M + 3) ; - the molar ratio U/M of the number of mols of urea in relation to the number of mols of melamine being between 1.5 and 5 ; - the amount of the polymethylol compound being between 0.2 and 2 mols per mol of melamine ; - the resin having a dilutability of at least 1000% at ambient temperature ; - the resin being stable during storage.