N-METHYLOLACRYLAMIDE CRYSTAL, ITS PRODUCTION AND STORING THEREOF

N-METHYLOLACRYLAMIDE CRYSTAL, ITS PRODUCTION AND STORING THEREOF

PURPOSE: To remove formaldehyde-like odor of N-MAA crystals, reduce solidifying property after long term storage and hygienically improve working atmosphere in a place using the crystals and obtain the subject crystals by a simple operation process. CONSTITUTION: Crystalline N-methylolacrylamide (MA...

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Bibliographische Detailangaben
Hauptverfasser: NIWA KIYONOBU, YANO TAKEYA, HAMANAKA MITSUHARU, YOSHIDA NORIMASA
Format: Patent
Sprache:eng
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:PURPOSE: To remove formaldehyde-like odor of N-MAA crystals, reduce solidifying property after long term storage and hygienically improve working atmosphere in a place using the crystals and obtain the subject crystals by a simple operation process. CONSTITUTION: Crystalline N-methylolacrylamide (MAA) obtained by reacting acrylic amide with formaldehyde is subjected to cleaning treatment using a mixed solution of water with a water-soluble organic medium to provide N-MAA crystals substantially free from formaldehyde-like odor and having