SOLID POLYALUMOXANE COMPOSITION, OLEFIN POLYMERIZATION CATALYST, PRODUCTION METHOD OF OLEFIN POLYMERS AND SOLID POLYALUMOXANE COMPOSITION Russian patent published in 2017 - IPC C07F5/06 C08F10/00 C08F4/642 C08F4/6592 C08G79/10 

FIELD: chemistry.

SUBSTANCE: composition contains the polyalkylalumoxane and trialkylaluminium and has the solubility in n-hexane at 25°C less than 0.50% mole, as determined by the method (i), has the solubility in toluene at 25°C less than 1.0% mole, as determined by the method (ii), wherein the mole fraction of alkyl groups from trialkylaluminium is 13% mole or more relative to the alkyl groups total mole amount from polyalkylaluminoxane and alkyl groups from trialkylaluminium, defined with respect to the dissolved in tetrahydrofuran-d₈ components by the method (iii). Method (i): 2 grams of the solid polyaluminoxane composition is added to 50 ml of n-hexane, hold at 25°C; the mixture is stirred for 2 hours and filtered to give the filtrate and the residue; the concentration of aluminium in the filtrate is measured by inductively coupled plasma atomic emission spectroscopy (ICP-AES) and the solubility is determined as the ratio of aluminium atoms in the filtrate to the number of aluminium atoms corresponding to 2 grams of solid polyaluminoxane composition. Method (ii): solubility is measured in the same manner as in method (i), except that toluene is used instead of n-hexane. The method (iii): 0.5 ml of tetrahydrofuran (THF)-d₈ (heavy solvent) is added to 10 mg of the solid polyaluminoxane composition; the mixture is stirred at 25°C for 2 hours; the mole fraction is determined by studying the dissolved in THF - d₈ components with ¹H-NMR at the measurement temperature 24°C. The catalyst for the olefins polymerization and the production method of olefin polymers are also provided.

EFFECT: invention makes it possible to prepare the solid polyaluminoxane composition, suitable to use it as cocatalyst and catalyst carrier in combination with the olefin polymerization catalyst without using the solid inorganic carriers such as silica.

9 cl, 18 dwg, 16 tbl, 160 ex