METHOD OF POLYMERIZATION OF MONOMERS IN FLUIDIZED BED Russian patent published in 1999 - IPC

FIELD: chemistry of polymers. SUBSTANCE: described is method of polymerization of alpha-olefin(s) in gas phase reactor with fluidized bed and fluidizing medium containing gas phase and liquid phase. Said method comprises regulating cooling power of fluidizing medium by regulating ratio between gas phase and liquid phase and maintaining value of function Z of volume weight which represents wherein ρ_bf is volume weight in fluidized state, ρ_bs is volume weight after settling, ρ_g is density of gas and ρ_s is actual density of resin at level which exceeds or equals to design extreme value of this function. EFFECT: simplified and safer process and high reactor efficiency. 22 cl, 3 ex, 3 dwg, 6 tbl