| http://www.w3.org/ns/prov#value | - n is an integer which represents the number of amide units such that the number of ester groups present in said at least one polyamide polymer ranges from 10% to 50% of the total number of all said ester groups and all said amide groups comprised in said at least one polyamide polymer; R1, which are identical or different, are each chosen from alkyl groups comprising at least 4 carbon atoms and al
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