FIELD: chemistry.
SUBSTANCE: described method for thickening additive production for lubricating oils, comprising compensating copolymerization of vinyl monomers composition of alkyl(meth)acrylate and styrene with vinyl ether under radical initiation by azoisobutyric acid dinitrile in excessive of boiling vinyl alkyl ether with the following component ratio, wt %: alkyl(meth )acrylate - 29-54, styrene - 20-60, vinyl ether - 5-38, azoisobutyric acid dinitrile - 0.5% of the total monomers weight, further distillation of unreacted monomers, polymer drying at a reduced pressure to the constant weight.
EFFECT: increased thickening additive resistance to mechanical degradation.
3 cl, 1 dwg, 2 tbl, 9 ex
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