ORGANOBORON COMPOUND, METHOD OF PREPARING THEREOF, CATALYST SYSTEM, METHOD OF PREPARING OLEFINIC POLYMER, AND POLYOLEFIN Russian patent published in 2000 - IPC

FIELD: chemical industry. SUBSTANCE: described is new organoboron compound having catalytic activity of formula I: [R_jM-X_d-MR_j]^a-•bA^c+ (I) wherein R independently from each other, are the same and denote C₁-C₄₀ alkyl; X, independently from each other, are the same or different and denote C₁-C₄₀ alkyl; M, independently from each other are the same or different and denote element of IIIa, IVa and Va groups of the Periodic Table provided that one M is boron, A is cation of element of Ia, IIa and IIIa group of the Periodic Table, carbenium, oxonium or sulfonium cation or quaternary ammonium compound, "a" is integer of 0 to 10, "b" is integer of 0 to 10, "c" is integer of 0 to 10, and a=bxc, "d" is 1, j is integer of 1 to 3. Also described are method of preparing said chemical compound; catalyst system and method of preparing polyolefins. EFFECT: improved properties of the organoboron compound. 11 cl, 9 ex