FIELD: polymer materials.
SUBSTANCE: invention relates to water-in-oil type dispersions useful as flocculants, thickeners, and additives for plant protection and erosion-preventive agents. Dispersion is composed of continuous essentially water-immiscible organic phase, water-soluble polymerizates finely distributed therein, and, optionally, adjuvants. Amount of organic phase is 20 to 80% by weight and it contains organic acid esters either as they are or in combination with a hydrocarbon or with hydrocarbon mixture, whereas level of residual monomers in dispersion is below 1000 ppm. Dispersion is preferably prepared via emulsion polymerization in reverse water-in-oil systems, wherein residual polymer destroyer is added after the end of polymerization process.
EFFECT: improved environmental safety of products.
17 cl, 1 tbl, 11 ex
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