INVERTER MIXTURES FOR POLYMER DISPERSIONS WITH BETTER ENVIRONMENTAL SAFETY Russian patent published in 2007 - IPC C08F2/32 

FIELD: polymer materials.

SUBSTANCE: invention relates to inverter mixture and application thereof, to "water in oil" polymer dispersion, and to a methods for preparation and use of the latter. Inverter mixture contains at least one oxyethylated fatty alcohol and at least one oxyethylated mono- and/or dialkanolamide of fatty acid or at least one oxyethylated fatty alcohol and at least one alkylpolyglycoside. Inverter mixtures finds use as additives for "water in oil" polymer dispersions to convert them into "oil in water" polymer dispersions when being diluted with large amount of water. "Water in oil" polymer dispersion, consisting of continuous essentially water-immiscible organic phase and, finely distributed therein, water-soluble and/or water-swellable polymers and, optionally, auxiliary substances, contains inverter mixture. Such a dispersion is prepared via emulsion polymerization inducing inversion of phases by adding to polymers inverter mixture when polymerization process is ended. Inverted dispersion is used as flocculant in sedimentation of solids, especially in water, industrial water, and waste water treatment processes, in mining operations, especially in production of coal, aluminum, and oil, or as supplements in paper manufacture industry and sugar industry.

EFFECT: reduced environmental toxicity of inverter mixtures and increased their dispersibility and solubility in "water in oil" polymer dispersions.

12 cl, 13 tbl, 18 ex