CATALYTIC SYSTEM FOR CATIONIC OLIGOMERIZATION OF INDIVIDUAL LINEAR OLEFINS OR THEIR MIXTURES Russian patent published in 2003 - IPC

FIELD: organic chemistry, chemical technology. SUBSTANCE: invention relates to cationic catalytic systems (catalysts) for oligomerization of individual C₃-C₁₄-olefins or their mixtures to bases of synthetic automobile, aviation, transmission and other types of poly- alpha-olefin oils (PAOO). Invention proposes catalytic system R_nA1X_3-n-R'X for cationic oligomerization of individual LAO or their mixtures to bases of synthetic PAOO (wherein R is CH₃, C₂H₅, C₃H₇ or iso-C₄H₉; X is Cl, Br, J; n = 1.0; 1.5 or 2.0; R' is a primary, secondary or tertiary alkyl, allyl, benzyl, acetyl or benzoyl) and comprises from 0.2 to 1.5 mole (mainly from 0.25 to 0.75 mole) of organic modifying agent per each mole of R_nA1X_3-n additionally. As an organic modifying system the catalytic system comprises substance taken among the following group: ethylene glycol monomethyl ester, ethylene glycol monoethyl ester (ethylcellosolve), acetylacetone, ethylene glycol dimethyl ester, ethylene glycol diethyl ester, ethylene glycol nonsymmetric methylethylester, ethylene glycol methoxyacetate, ethylene glycol ethoxyacetate, ethylene glycol diacetate, 1,2- dimethoxypropane, malonic acid mono- or dimethyl, mono- or diethyl esters, acetic acid anhydride, benzophenone. The developed catalytic systems R_nA1X_3-n- -R'X combine high activity, high specific reproducibility, high selectivity by end products, universality with respect to olefin raw and provide preparing end products with lower solidification temperature points. EFFECT: improved properties of systems. 4 cl, 5 tbl, 105 ex