METHOD FOR THE MANUFACTURE OF MINERAL WOOL PRODUCTS

The invention relates to a method for the manufacture of mineral wool, comprising reacting an aqueous phenol-formaldehyde resole with free formaldehyde with a first amount of urea, thereby preparing a prereact; contacting the prereact with a second amount of urea; applying the resulting mixture of p...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	AZNAR ÉCIJA, ANA ISABEL, QUEROL PIÑOT, MIREIA, MOLINERO ARENAS, ALEJANDRO, CASADO DOMÍNGUEZ, ARTURO LUÍS
Format:	Patent
Sprache:	eng ; pol
Schlagworte:	ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE ADHESIVES BRAIDING BUILDING CEILINGS CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMISTRY COTTON-WOOL DYES FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS,NON-WOVEN FABRICS FIXED CONSTRUCTIONS FLOORS GENERAL BUILDING CONSTRUCTIONS GLASS INSULATION OR OTHER PROTECTION OF BUILDINGS JOINING GLASS TO GLASS OR OTHER MATERIALS KNITTING LACE-MAKING MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARYMATERIAL METALLURGY MINERAL OR SLAG WOOL MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL NON-WOVEN FABRICS PAINTS POLISHES ROOFS SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS TEXTILES TRIMMINGS USE OF MATERIALS AS ADHESIVES WADDING WALLS, e.g. PARTITIONS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	The invention relates to a method for the manufacture of mineral wool, comprising reacting an aqueous phenol-formaldehyde resole with free formaldehyde with a first amount of urea, thereby preparing a prereact; contacting the prereact with a second amount of urea; applying the resulting mixture of prereact and second amount of urea, as part of a binder, optionally with additives, to the surface of mineral fibers; and curing the binder on the surface of the mineral fibers. The total amount of urea used ranges 10-60 wt.% relative to the sum of the dry weight of the phenol-formaldehyde resole and the total amount of urea, provided that when Ut is between 10-40 wt. %, the second amount of urea (U2) used in c) is between 10-39 wt.% of the total amount of urea (Ut), and when Ut is between 41-60 wt.%, the second amount of urea (U2) used in c) is at least 10 wt.% of the total amount of urea (Ut). The invention also relates to a mineral wool product with reduced emissions of formaldehyde obtained by the method of the invention.