BINDER FOR MINERAL FIBRES, COMPRISING LIGNOSULFONATE AND A CARBONYL COMPOUND, AND RESULTING MATS
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Feb 1, 2016
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Jan 30, 2015
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An aqueous binder for mineral fibers, in particular glass fibers, includes at least one ammonium lignosulfonate or one alkali metal or alkaline earth metal salt of lignosulfonic acid, and at least one carbonyl compound of formula: R—[C(O)R1]x (I) in which: R represents a saturated or unsaturated and linear, branched or cyclic hydrocarbon radical, a radical including one or more aromatic nuclei which consist of 5 or 6 carbon atoms, a radical including one or more aromatic heterocycles containing 4 or 5 carbon atoms and an oxygen, nitrogen or sulfur atom, it being possible for the R radical to contain other functional groups, in particular hydroxyl or alkoxy groups, especially methoxy groups, R1 represents a hydrogen atom or a C1-C10 alkyl radical, and x varies 1 to 10, the binder being devoid of hydrogenated sugar and of melamine.
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