METHOD FOR STABILIZING ACRYLAMIDE-BASED POLYMER DISPERSION

Title:

METHOD FOR STABILIZING ACRYLAMIDE-BASED POLYMER DISPERSION

Document Type and Number:

Japanese Patent JP2002146029

Kind Code:

A

Abstract:

To provide a method for improving the long-term stability of an acrylamide-based polymer dispersion by reducing the viscosity of the dispersion so as to improve its fluidity and prevent its curdling with time as well.

This method for stabilizing an acrylamide-based polymer dispersion is characterized by comprising addition of a polyethylene glycol and/or polypropylene glycol to the dispersion under such a condition that the acrylamide-based polymer exists as a dispersion in an aqueous medium containing an inorganic salt in high concentrations and a vinylpyrrolidone homopolymer and/or a copolymer of vinylpyrrolidone and another monomer.

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Inventors:

YAGYU OSAMU
FUJIKAKE MASATO
HAMAMOTO SHIGEO
FUJIMOTO NOBUTAKA

Application Number:

JP2000350125A

Publication Date:

May 22, 2002

Filing Date:

November 16, 2000

Export Citation:

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Assignee:

TAKI CHEMICAL
SUMITOMO SEIKA CHEMICALS

International Classes:

C08J3/02; C08K3/00; C08L33/26; C08L39/06; C08L71/02; (IPC1-7): C08J3/02; C08K3/00; C08L33/26; C08L39/06; C08L71/02

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