Condensation products of methylol ketones

Condensation products of mono-, di- or tri-methylol-ketones are obtained by reacting the monomers using as a catalyst (a) a 40% to 60% aqueous solution of sodium or potassium hydroxide, or (b) an alcoholic solution of sodium or potassium alcoholate, or (c) an alcoholic solution of sodium or potassiu...

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Bibliographische Detailangaben
Hauptverfasser:	THEODOR WAAG, GERHARD WOLTER
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS GENERAL PROCESSES OF COMPOUNDING MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS WORKING-UP
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Beschreibung
Zusammenfassung:	Condensation products of mono-, di- or tri-methylol-ketones are obtained by reacting the monomers using as a catalyst (a) a 40% to 60% aqueous solution of sodium or potassium hydroxide, or (b) an alcoholic solution of sodium or potassium alcoholate, or (c) an alcoholic solution of sodium or potassium hydroxide. The catalyst may be used in a concentration of 0.5% to 5.0% by volume. Foams may be obtained especially when aqueous sodium or potassium hydroxide is used. Fillers, plasticizers and foam regulators may be included. In examples resins are obtained from an acetone-methylol compound containing an average of 1.7 methylol groups per molecule using a 50% aqueous sodium hydroxide solution as catalyst.