PRODUCTION OF N-BUTOXYMETHYL (METH)ACRYLAMIDES

PURPOSE: To suppress production of a by-product and obtain the subject compound useful as a resin raw material for coating by subjecting N-methylol (meth)acrylamide to dehydration condensing reaction with butanols while adding butanols to N-methylol (meth)acrylamide and separating the produced water...

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Bibliographische Detailangaben
Hauptverfasser:	UOHAMA MISAO, OKUDA TATSUSHI
Format:	Patent
Sprache:	eng
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS APPARATUS THEREFOR CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY GENERAL METHODS OF ORGANIC CHEMISTRY METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	PURPOSE: To suppress production of a by-product and obtain the subject compound useful as a resin raw material for coating by subjecting N-methylol (meth)acrylamide to dehydration condensing reaction with butanols while adding butanols to N-methylol (meth)acrylamide and separating the produced water in the presence of an acid catalyst and concentrating the reaction solution. CONSTITUTION: Butanols (preferably isobutanol) in an amount of 1-3mol are devidedly or continuously added to 1mol N-methylol (meth)acrylamide and dehydration condensing reaction of N-methylol (meth)acylamide with butanols is started while separating the produced water and 0.3-5mol butanols are added thereto to react these components. After finishing the reaction, the concentration of the reaction solution is carried out while keeping pH of the reaction solution to 4-9.5, preferably 7.5-9.5 to provide the objective compound.