FIELD: technological processes.
SUBSTANCE: invention relates to hydrogenated polybutadiene and to process for its preparation, as well as to lubricating oil composition containing this polymer. Hydrogenated polybutadiene consists of 25–45 wt.% of monomeric units of 1,4-butadiene and 55–75 wt.% of monomeric units of 1,2-butadiene based on total weight of hydrogenated polybutadiene, characterized by weight-average molecular weight in the range from 2,000 g/mol to 10,000 g/mol and degree of hydrogenation of more than 99 %.
EFFECT: hydrogenated polybutadiene according to invention is used as a highly shear-resistant additive for lubricating oils or synthetic base fluids, depending on their dosage in lubricant composition.
13 cl, 3 tbl, 13 ex
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