DECOLORATION OF AQUEOUS ALPHA-HYDROXYACRYALTE POLYMER SOLUTION

PURPOSE:To decolorize an aqueous alpha-hydroxy acrylate polymer solution in good efficiency by bringing a specified oxidizing agent into contact with the solution in its production. CONSTITUTION:At least one oxidizing agent selected from among H2O2, H2O2- producing substance (e.g. sodium percabonate...

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Bibliographische Detailangaben
Hauptverfasser:	KAYAMA RYUICHI, KUSANO SACHIKO
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 BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP WORKING-UP
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Beschreibung
Zusammenfassung:	PURPOSE:To decolorize an aqueous alpha-hydroxy acrylate polymer solution in good efficiency by bringing a specified oxidizing agent into contact with the solution in its production. CONSTITUTION:At least one oxidizing agent selected from among H2O2, H2O2- producing substance (e.g. sodium percabonate), a hypochlorite, a chlorite and O3 is brought into contact with an aqueous alpha-hydroxyacrylate polymer solution having a monomer unit of the formula [wherein R1-2 are each H or an (OH- or halogen-substitute) 1-3 C alkyl; and M is H, an alkali (alkaline earth) metal, ammonium or an amino] in its production.