Process for the production of polyester (co)polymers

Abstract

The invention relates to a process for the chemical production of a polyester (co)polymer starting from monomers and/or oligomers, comprising reacting a mixture of at least (a) one or more diol monomers, and (b) one or more dicarboxylic acid monomers and/or esters thereof, and/or one or more oligomers comprising monomer units of (a) and (b); wherein at least one diol monomer (a) is a secondary diol monomer; and wherein in the process also is added (c) a monohydric alcohol with a boiling point at ambient pressure of equal to or higher than 175° C. and an acid dissociation constant determined at 25° C. in water of equal to or less than 12.0 and equal to or more than 7.0, in an amount of 2.5-100 weight % with regard to the total weight of monomers and/or oligomers.

Dependencies are inferred from the claim text.