| http://www.w3.org/ns/prov#value | - 0 to 99% by weight, with respect to the total amount of monomers employed, of at least one acyclic olefin of the formula VIII ##STR17## in which R9, R10, R11 and R12 are identical or different and are a hydrogen atom or a C1 -C8 -alkyl radical, are polymerized.
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