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Polyethylene 1-hexene concentration

The deposition of Cr(2-Methyl-allyl)3 onto silica, previously dehydrated at 200,400 or 800°C, was reported in which the stoichiometry of the deposition reaction was monitored by GC analyses of the pentane solution used to carry out the deposition reaction. Ethylene homopolymerization experiments with the catalyst based on the silica dehydrated at 800 C showed that the polyethylene contained a high concentration of short-chain branches, suggesting that this catalyst also produced 1-olefins (primarily 1-hexene) that were incorporated into the growing polymer chain. The catalyst prepared on 400°C silica produced polyethylene with a small amount of short-chain branches, while the catalyst prepared on 200°C silica exhibited no side chains. [Pg.160]

Linear low density polyethylenes (LLDPE). are low-concentration a-olefin modified polyethylenes. The olefines usually used are propylene, butene, hexene, octene, 4-methyl pentene-1. Due to the relatively high concentration of methyl groups in linear low density polyethylenes, greater intensities are normally observed for the bands associated with the CH3 group than are observed for high density polyethylenes (HDPE) so care must be exercised when making assignments. [Pg.395]


See other pages where Polyethylene 1-hexene concentration is mentioned: [Pg.520]    [Pg.441]    [Pg.96]    [Pg.100]    [Pg.112]    [Pg.154]    [Pg.67]    [Pg.141]    [Pg.804]    [Pg.314]    [Pg.298]    [Pg.1054]    [Pg.476]    [Pg.97]    [Pg.825]    [Pg.385]    [Pg.319]   
See also in sourсe #XX -- [ Pg.548 ]




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Polyethylene concentration

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