| abstract |
The present invention relates to a process for producing a thermoplastic polyurethane which comprises reacting a monomeric aliphatic carbodiimide, an oligomeric aliphatic carbodiimide, a polymer aliphatic carbodiimide, a monomer aromatic carbodiimide, an oligomer aromatic carbodiimide and a polymer aromatic carbodiimide And at least one ester selected from the group consisting of citric acid esters, acetyl citric acid esters, phthalic acid esters, benzoic acid esters, adipic acid esters, hydrogenated phthalic acid esters and phosphoric acid esters selected from the group consisting of ); And subsequently adding the composition Z (W) to the thermoplastic polyurethane or to the reaction mixture for preparing the thermoplastic polyurethane. In addition, the invention relates to thermoplastic polyurethanes obtainable or obtainable by the process according to the invention, and to the use of the composition Z (W) as a plasticizer for thermoplastic polyurethanes. The invention also relates to a shaped article comprising a thermoplastic polyurethane according to the invention. |