Ethylene-Propylene Copolymeric Compositions With Long Methylene Sequence Lengths
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United States of America Patent
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Jul 7, 2014
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Jul 17, 2013
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Abstract
This invention relates to methods to prepare and compositions pertaining to branched ethylene-propylene copolymers that include at least 50% ethylene content by weight as determined by FTIR; a g′vis of less than 0.95; a MW of 150,000 to 250,000; a methylene sequence length of 6 or greater as determined by 13C NMR, wherein the percentage of sequences of the length of 6 or greater is more than 32%; and can have greater than 50% vinyl chain end functionality.
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