Production of formaldehyde-free bound mineral wool or glass wool for e.g. insulating board uses aqueous curable phenol-formaldehyde resin binder dispersion containing hydroxy(alkyl)amine or diamine and activated silane

摘要

Production of formaldehyde-free bound mineral wool uses a binder (I) containing (a) aqueous phenol-formaldehyde resin dispersion, (b) (alkylated) hydroxy(alkyl)amine or diamine compound(s) of molecular weight not 20000 g/mole and (c) activated silane(s) obtained by reacting organosilane(s) with an enolizable ketone having carbonyl or hydroxyl group(s) and aromatic hydroxyl compound(s) and/or activated heterocycle(s). (I) is applied to the still-hot fibers after formation from a mineral melt and the product with (I) is cured. Production of formaldehyde-free bound mineral wool uses a binder (I) containing (a) an aqueous dispersion of phenol-formaldehyde resin(s), (b) optionally alkylated hydroxy(alkyl)amine or diamine compound(s) of formula (1) and of molecular weight not 20000 g/mole and (c) activated silane(s) obtained by reacting (c1) organosilane(s) selected from mono-, di- and tri-alkoxysilanes having a 1-8 carbon (C) alkoxy group containing 2-10 C aminoalkyl or 2-10 C N-aminoalkyl group(s), 3-(2-aminoethylamino)propyl-trimethoxysilane, di[3-(trimethoxysilyl)propyl]amine, 3-aminopropylsilantriol, aminosilane with ethoxylated nonyl-phenolate and/or trimethoxy-{3-[3-(benzylaminopropyl)]-aminopropyl}-silane hydrochloride with (c2) a 3-12 C enolizable ketone having carbonyl or hydroxyl group(s) and also aromatic hydroxyl compound(s), selected from dihydroxybenzenes and their hydroxymethylated compounds, C-alkylated compounds of phenol or resorcinol, self-condensation products of the hydroxymethylated compounds and/or activated heterocycle(s). (I) is applied to the hot fibers after converting a mineral melt to fibers and the mineral wool product with (I) is subjected to a cure process: (R2)(R3)N-[-CH 2] n-O-R1 (1); R1 : H or -[CH 2])n-N(R2)(R3); n : 2-10; R2, R3 : H or -[(CH 2) n-O] m-R1; m : 1-50. An independent claim is included for bound mineral wool products produced by this process.