Studies on Increase of Elongation at Break of Aqueous Polyurethane Finishing Agents

The main factors influencing the elongation at break of the aqueous polyurethane film and the modifying methods of aqueous polyurethane are introduced in detail in the paper.With the studies in this aspect done in our laboratory being considered,the ways that may be taken to increase the elongation at break of the aqueous polyurethane film are discussed,and the foreground in studies and application of aqueous polyurethane finishing agents with great elongation at break is prospected