Premium
Regulation of Molecular Weight Characteristics and Microtacticity of Polyhexene Produced over Highly Active Supported Titanium–Magnesium Catalysts
Author(s) -
Echevskaya Ludmila,
Zakharov Vladimir,
Matsko Mikhail,
Nikolaeva Marina
Publication year - 2018
Publication title -
macromolecular reaction engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.37
H-Index - 32
eISSN - 1862-8338
pISSN - 1862-832X
DOI - 10.1002/mren.201700064
Subject(s) - catalysis , magnesium , molar mass distribution , titanium , polymerization , chemistry , molecular mass , hydrogen , polymer chemistry , organic chemistry , enzyme , polymer
The data on the effect of polymerization temperature of 1‐hexene within the 30–70 °C range in the presence of a highly active supported titanium–magnesium catalyst on molecular weight characteristics and microtacticity of polyhexene, with cocatalyst composition being additionally varied (AlEt 3 or Al( i ‐Bu) 3 ), in the absence and presence of an external stereoregulating electron‐donating compound and hydrogen, are reported. Polymerization conditions, making it possible to specifically regulate molecular weight and molecular weight distribution of polyhexene over a broad range (( M w = 7 × 10 4 –2.2 × 10 6 g mol −1 ; M w / M n = 3.7–33) and regulate isotacticity of polyhexene (content of mmmm pentads from 56% to 96%), while retaining high catalyst activity, are determined.