Title: The synthesis of low molecular weight hydroxy-tipped polyethylene and polypropylene by the intermediacy of Ziegler—Natta catalysts
Abstract: Abstract The use of diethylzinc in conjunction with conventional and supported Ziegler—Natta catalysts permits the synthesis of polypropylene and polyethylene samples with g.p.c. M n values as low as 4000 and 3000 respectively. At high diethylzinc concentrations the number of metal—polymer bonds appears to be 40% for polypropylene and 50% for polyethylene respectively, as measured by a tritium-quench radiotracer method. The metal-bound macromolecules can be efficiently oxidized with molecular oxygen at 60°C, and subsequently hydrolysed to give hydroxy-tipped polymers. The oxidation efficiency appears to be variable and to be lower at high diethylzinc concentrations.
Publication Year: 1984
Publication Date: 1984-12-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 29
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