METHOD OF POLYMERIZATION IN THE PRESENCE OF AN ADDITIVE, REDUCING STATISTICAL CHARGES Russian patent published in 2018 - IPC C08F2/00 C08F2/44 C08F10/00 

FIELD: chemistry.

SUBSTANCE: invention relates to a process for the preparation of polyolefins by polymerization of olefins in the presence of a polymerization catalyst. Polymerization is carried out in the presence of an additive that reduces static charges. Static charge reducing additive includes a polymer derived from an alkylene oxide containing on average 10 to 200 repeating units -(CH₂-CHR-O)-. Polymer obtained from the alkylene oxide is a random ethylene oxide copolymer and other alkylene oxides. Ratio of n: m repeating units -(CH₂-CH₂-O)- derived from ethylene oxide, to repeating units -(CH₂-CHR'-O)-, obtained from other alkylene oxides, is 6:1–1:1. End groups of a polymer derived from an alkylene oxide are groups -OH.

EFFECT: preventing electrostatic charge and reducing the formation of a sheet coating of the walls or deposition of polymeric agglomerates in the polymerization reactor.

15 cl, 1 dwg, 1 tbl, 4 ex