Method for controlled free radical polymerization or copolymerization of ethylene under high pressure in the presence of an initiator-controller
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United States of America Patent
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May 11, 2004
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N/A
app pub date -
Jun 15, 2001
filing date -
Oct 6, 1998
priority date (Note) -
Expired
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Abstract
The present invention relates to a process for the radical polymerization or copolymerization of ethylene under high pressure in the presence of at least one polymerization initiating-controlling compound capable of providing, by decomposition under the polymerization or copolymerization conditions: at least one initiating free radical (Z) which carries at least one site for initiating the (co)polymerization; and at least one stable free radical (SFR) which carries at least one site exhibiting the stable radical state and which is stable under the polymerization conditions, with, in total, as many initiating sites as sites exhibiting the stable radical state.
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