| http://www.w3.org/ns/prov#value | - The invention relates to a thermoplastic polymer based on a vinyl monomer, which is characterized in that the polymer composition contains more than 1% (wt) of one or more compounds according to formula I and/or II: ##STR1## where R1 is a hydrogen atom, alkyl, aryl, cycloalkyl, cycloaryl and/or a halogen.
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