METHOD OF OBTAINING WATER-SOLUBLE POLYMERS ON QUATERNARY SALTS OF DIMETHYLAMINOETHYLMETHACRYLATE BASE Russian patent published in 2015 - IPC C08F120/34 

FIELD: chemistry.

SUBSTANCE: invention relates to highly molecular compounds, in particular to method of obtaining water-soluble polymers based on quaternary salts of dimethylaminoethylmethacrylate, which can be applied as flocculants, effective in purification of sewage water of different origin. Claimed is method of obtaining water-soluble polymers based on quaternary salts of dimethylaminoethylmethacrylate of general formula , where R₁=-CH₃, -CH₂-CH₃ or -CH₂-C₆H₅; X^-=Cl^-, Br^-, ^-OSO₃CH₃, average weight molecular weight of synthesised polyelectrolytes is higher than 10⁶, with monomer being polymerised in water solution at 20°C, target product of polymerisation is extracted, purified by dialysis and dried lyophilically; method is characterised by the fact that sodium dodecylsulphate is additionally introduced into solution with molar ratio monomer:sodium dodecylsulphate equal 1-10:1, with radical initiator tret-buthylperoxypropanol-2 being applied as initiator, and monomer being polymerised in argon medium.

EFFECT: obtaining cation highly molecular polyelectrolyte, possessing reduced polydispersity.

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