| 摘要 |
FIELD: chemistry.SUBSTANCE: invention relates to polymerisation of olefins in suspension reactors and particularly to particle size of a polymer obtained using said method. Described is a method of producing an olefin polymer by suspension polymerisation at 90-107°C in the presence of a chromium catalyst. The catalyst has activity of at least 1000 g polymer/g catalyst/h on a support with pore volume of at least 1.3 cm/g. The method includes adding an antistatic agent to the polymerisation mixture in amount of 0.1-100 ppmw with respect to the diluent in the suspension. The obtained polymer has a particle size distribution which is such that less than 8 vol%, preferably less than 5 vol%, of the polymer particles have average diameter of 125 mcm or less.EFFECT: considerable reduction of formation of deposits and contaminants, preventing formation of an electrostatic charge, obtaining a polymer with uniform particle size distribution.12 cl, 4 dwg, 4 ex |
