CATALYST FOR ETHYLENE POLYMERIZATION BASED ON BIS-(IMINO)PYRIDYL COMPLEXES

摘要

FIELD: organic chemistry, chemical technology, catalysts. SUBSTANCE: High-density polyethelene with different molecular and thermal indices is synthesized in suspension regimen of polymerization reaction at temperatures 70-80 C, under pressure 0.1-1.5 MPa by effect of novel 2,6-bis-(imino)pyridyl complexes of the formula: where M means Fe⁺², Co⁺²; R¹ means methyl group; R³ means hydrogen atom, methyl, ethyl or isopropyl group; R⁴ means hydrogen atom or methyl group; R² means cycloalkyl group with carbon atom number 6, not less, and alkylalumoxane. Toluene, n-hexane, benzine and others are used as hydrocarbon solvents. Invention solves the problem of synthesis of novel homogeneous catalysts retaining activity at increased temperatures of polymerization reaction. EFFECT: improved properties of catalyst. 3 tbl, 22 ex