Green Alternative Cosolvents To N-Methyl-2-Pyrrolidone In Water Polyurethane Dispersions

Lorena Germán,José María Cuevas,Rubén Cobos,Leyre Pérez-Alvarez,José Luis Vilas-Vilela

RSC ADVANCES（2021）

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摘要

N-Methyl-2-pyrrolidone is a toxic dipolar aprotic solvent widely used in the synthesis of polyurethane dispersions (PUD). Since legislation strongly restricts this substance, green alternatives are essential. Dihydrolevoglucosenone and gamma valerolactone demonstrate comparable performance to that of NMP as cosolvent in the synthesis and the film forming process of PUD.

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