| abstract |
The following steps: a) a1) an organometallic compound of a Group 3 to 10 transition metal of the periodic table (IUPAC 2007), or an organometallic compound of an actinoid or a lanthanoid, and a2) a promoter comprising a Group 13 element of the periodic table (IUPAC 2007) And a3) preparing a solution (A) containing the solvent (A-1), b) The following formula (I) [Chemical 1] (In the formula, n is a number from 10 to 100, m is a number from 1 to 40, x is a number from 5 to 16, and y is a number from 11 to 33, provided that m, n, x and y are selected such that the block copolymer is soluble in solvent B or solution A to the extent that a stable emulsion is formed by adding the block copolymer) in the presence of polystyrene-b-fluoropolystyrene copolymer Preparing a liquid / liquid emulsion system by dispersing said solution (A) in a solvent (B) that is substantially immiscible with solution (A), b1) Solvent (B) constitutes the continuous phase of the emulsion b2) Solution (A) constitutes the dispersed phase in the form of droplets b3) Organometallic compound and promoter are present in the droplets, c) solidifying the dispersed phase to convert the droplets to solid particles d) optionally collecting the particles to obtain the catalyst system A process for preparing an unsupported heterogeneous olefin polymerization catalyst system comprising an organometallic compound of a transition metal of group 3 to group 10 of the periodic table (IUPAC 2007) in the form of solid particles, The resulting unsupported heterogeneous olefin polymerization catalyst and use of said catalyst in olefin polymerization. [Selection figure] None |