Thermoplastic polyurethane comprising, as plasticizer, glycerol esterified with at least one aliphatic carboxylic acid

摘要

The invention provides a thermoplastic polyurethane with at least one plasticizer, where at least one first plasticizer (i) is based on glycerol, and at least one hydroxy group of the glycerol has been esterified with a monocarboxylic acid (ii) which comprises 1, 2, 3, 4, 5, or 6 carbon atoms, more preferably 2, 3, or 4 carbon atoms, and very particularly preferably 2 carbon atoms. The invention further comprises a process for producing the thermoplastic polyurethane with the plasticizer (i), a process for coating products with said thermoplastic polyurethane, the use of the thermoplastic polyurethane, and also the use of plasticizers based on glycerol for thermoplastic polyurethane.

主权项

1. A plasticizer-containing thermoplastic polyurethane obtained by reacting a mixture comprising thermoplastic polyurethane-forming reactants in the presence of tributyl acetyl citrate as a plasticizer, thereby forming a thermoplastic polyurethane, in which glycerol triacetate as a plasticizer is mixed therewith following formation of the thermoplastic polyurethane, wherein the thermoplastic polyurethane-forming reactants comprise an isocyanate component, a polyol component, an optional bifunctional chain extender component, an optional catalyst component and an optional auxiliary component.