METHOD OF PRODUCING POLYALPHAOLEFINS WITH KINEMATIC VISCOSITY OF 10-25 CST Russian patent published in 2018 - IPC C08F10/14 C08F4/00 C08F4/06 C07C2/22 C10M107/10 

FIELD: technological processes.

SUBSTANCE: invention relates to the production of synthetic oils based on alpha-olefins, specifically to processes of oligomerization of octene-1 or mixtures of alpha-olefins C₈-C₁₄. Method for producing polyalphaolefins with a kinematic viscosity of 10–25 cSt and a low pour point, oligomerization or co-oligomerization of alpha-olefins C₈-C₁₄ on the catalyst. Catalyst is a system based on ethylaluminum dichloride (EADC) and chlorocyclohexane (CCH) at a molar ratio of EADC:CCH, equal to 0.5–5, and an organic amine, as an additive to the catalyst in an amine/EADC ratio of 0.001 to 0.284. Catalytic system is formed in situ when the components of the catalyst system are dosed into the alpha-olefin feed at a temperature of 40–90 °C in the intensive mixing mode at a speed of 150–300 rpm. Catalyst is taken in the sum of the components in an amount of 0.5–2.1 wt. % of the weight of the alpha-olefin feed.

EFFECT: producing polyalphaolefins with a viscosity of 10–25 cSt with a high yield on an accessible catalyst.

1 cl, 2 tbl, 23 ex