| abstract |
A process for preparing a polyester polymer composition comprising a polyester polymer having furanic units, wherein the process comprises the steps of: - reaction of a cyclic polyester oligomer in the presence of a catalyst in an opening polymerization stage of ring under conditions of a reaction temperature and reaction time sufficient to produce a polyester polymer having furanic units, in which (I) the cyclic polyester oligomer comprises the structure: in which each of the groups A is a linear, branched or cyclic, optionally substituted alkyl, phenyl, aryl, or alkylaryl group, and m is an integer from 1 to 20, preferably from 2 to 15, more preferably from 3 to 10, and the polyester polymer having furanic units comprises the structure: in which A is as previously defined and n is an integer from 10 to 1,000,000, or (II) the polyether oligomer The cyclic group comprises the structure: in which each of the groups B is a linear, branched or cyclic, optionally substituted alkyl, phenyl, aryl, or alkylaryl group, and n 'is an integer from 1 to 20, preferably from 2 to 10, and m is as previously defined, and the polyester polymer having furanic units comprises the structure: in which B, n 'and n are as previously defined. |