Mineral wool binder
AssigneeRockwool A/S
InventorThomas Hjelmgaard
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Abstract
The invention is directed to a formaldehyde-free binder composition for mineral fibres comprising at least one phenol containing compound, at least one protein and at least one divalent metal cation M2+ containing compound.
Claims20
A binder composition for mineral fibers, wherein the composition is formaldehyde-free and comprises:
- (a) at least one phenol containing compound,
- (b) at least one protein, and
- (c) at least one compound which contains a divalent metal cation M2+,
- (c) being present in a concentration of from 0.1 wt. % to 10 wt. %, based on a combined dry weight of (a) and (b).
A method of improving the water uptake and/or the mechanical properties and/or the aging properties of a mineral wool product comprising mineral fibers bonded by a cured formaldehyde-free binder composition which comprises (a) at least one phenol containing compound and (b) at least one protein, wherein the method comprises including in the uncured binder composition (c) one or more compounds which contain a divalent metal cation M2+ in an amount which results in a concentration of (c) of from 0.1 wt. % to 10 wt. %, based on a combined dry weight of (a) and (b).
Dependencies are inferred from the claim text.