PRODUCTION OF POLY(SODIUM ACRYLATE)

PURPOSE: To obtain a process for producing poly(sodium acrylate) which has an excellent capability of lowering the viscosity esp. of a calcium carbonate slurry when used as a dispersant for producing the slurry and thus enables the reduction in the amt. of a dispersant used. CONSTITUTION: In polymer...

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Bibliographische Detailangaben
Hauptverfasser:	TANAKA KAZUYOSHI, ARIMA KIYOSHI, YASHIMA HIROAKI
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	PURPOSE: To obtain a process for producing poly(sodium acrylate) which has an excellent capability of lowering the viscosity esp. of a calcium carbonate slurry when used as a dispersant for producing the slurry and thus enables the reduction in the amt. of a dispersant used. CONSTITUTION: In polymerizing acrylic acid in a solvent in the presence of a polymn. initiator, 40-85wt.% of the initiator is charged into the solvent in advance and the rest is dropped together with acrylic acid into the solvent. After the polymn. is substantially completed, the reaction product is neutralized with sodim hydroxide.