Oxalic acid diamides as modifiers for polyolefin catalysts
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United States of America Patent
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Mar 14, 2017
Grant Date -
Apr 28, 2016
app pub date -
Oct 28, 2014
filing date -
Oct 28, 2014
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Abstract
The present invention relates to the use of oxalic acid diamides as modifiers in conjunction with solid Ziegler-Natta type catalyst in processes in which polyolefins such as polypropylene are produced. The modified catalyst compositions produce polypropylene with good productivity and higher sterospecificity than systems without such modification.
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