Radical polymerization processes for preparing halogenated polymers, and halogenated polymers
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United States of America Patent
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Apr 24, 2007
Grant Date -
Sep 14, 2006
app pub date -
May 11, 2006
filing date -
May 17, 2002
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Abstract
Radical polymerization process for the preparation of halogenated polymers employing one or more ethylenically unsaturated monomers, at least one of which is chosen from halogenated monomers, molecular iodine and one or more radical-generating agents chosen from diazo compounds, peroxides and dialkyl diphenylalkanes Radical polymerization process for the preparation, starting from the halogenated polymers prepared by the process as described above, of block copolymers, at least one block of which is a halogenated polymer block. Halogenated polymers which have a number-average molecular mass Mn of greater than 1.0.times.10.sup.4 and an Mz/Mw ratio of less than 1.65. Block copolymers, at least one block of which is a block of halogenated polymer identical to the halogenated polymers described above. Block copolymers comprising at least one halogenated polymer block which have a number-average molecular mass Mn of greater than 1.5.times.10.sup.4 and a polydispersity index Mw/Mn of less than 1.60.
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