WATER SOLUBLE AND STORAGE STABLE RESOLE-MELAMINE RESIN

A curable, alkaline, melamine modified phenol- formaldehyde resin is prepared from an initial phenol- formaldehyde resole resin containing from 0.5 to 2.5 percent of free formaldehyde by scavenging formaldehyde with 1 to 12 parts of melamine for each 100 parts of the initial resin wherein the molar...

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Bibliographische Detailangaben
Hauptverfasser:	WALISSER, WAYNE R, JOHNSON, CALVIN K
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR GLASS JOINING GLASS TO GLASS OR OTHER MATERIALS LAUNDERING MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY MINERAL OR SLAG WOOL ORGANIC MACROMOLECULAR COMPOUNDS SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS TEXTILES THEIR PREPARATION OR CHEMICAL WORKING-UP TREATMENT OF TEXTILES OR THE LIKE TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS,FABRICS, FEATHERS, OR FIBROUS GOODS MADE FROM SUCH MATERIALS USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Beschreibung
Zusammenfassung:	A curable, alkaline, melamine modified phenol- formaldehyde resin is prepared from an initial phenol- formaldehyde resole resin containing from 0.5 to 2.5 percent of free formaldehyde by scavenging formaldehyde with 1 to 12 parts of melamine for each 100 parts of the initial resin wherein the molar ratio of formaldehyde to melamine is 0.2 to 1.5 moles of formaldehyde for each mole of melamine to reduce the free formaldehyde to less than 70% of that in the initial resin and prepare a storage stable resin which contains less than 0.7% of free formaldehyde and which maintains its stability under application conditions. An ammonium salt of strong acid and additional water is incorporated in the melamine modified resin to prepare an alkaline binder. The binder is sprayed on to fiberglass with low formaldehyde emissions, good stability and rapid cure in the acid range.