Abstract: A 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 are best suited for heat insulation in household appliances such as ovens, especially those including a high-temperature cleaning program.

Abstract: In a method for curing mineral wool that is mixed with binder through microwaves, generating additional heat through installation of microwave active substances is performed through curing the binder material.

Abstract: In a method for curing mineral wool that is mixed with binder through microwaves, generating additional heat through installation of microwave active substances is performed through curing the binder material.

Abstract: The present invention concerns a composition, containing: an aqueous dispersion of at least one polymer polycarboxylic acid; at least one amine compound, wherein the molecular mass of the amine compound does not exceed approximately 20 000 g/mol; as well as at least one activated silane. The composition in accordance with the invention is suited as a formaldehyde-free binder for the manufacture of bound mineral wool.