Patent ID: 8633283

Claim:
A process for producing a polylactide composition, the composition comprising: a polylactide phase; and a thermoplastic polyurethane phase; wherein the process comprises: A) reacting a thermoplastic polyurethane with a co-reactant of at least one of a diisocyanate and a isocyanate prepolymer having at least two isocyanate groups, in a melt phase to obtain a melt of a thermoplastic polyurethane having a reduced molar mass relative to the thermoplastic polyurethane prior to the reaction and having an excess of isocyanate end groups; B) adding at least one polylactide into the melt obtained in A), and reacting the polylactide with the thermoplastic polyurethane having reduced molar mass and excess isocyanate groups at a temperature below 190° C., to form covalent bonds with the isocyanate groups; and C) cooling of the resultant composition, with the proviso that no polyol is added to any of A) to C).