Journal of Polymer Research

, 26:213 | Cite as

Study of solvent-free sulfonated waterborne polyurethane as an advanced leather finishing material

  • Zhihui Yang
  • Hu Zang
  • Guangfeng WuEmail author


A solvent-free waterborne polyurethane was synthesized via one-component crosslinking using N-[(2-amionoethyl)-amino] ethane sulphonated sodium as the post-chain extender. The effects of the N-[(2-amionoethyl)-amino] ethane sulphonated sodium and polyol content on the properties of waterborne polyurethane were investigated. The results indicate that at the optimum post-chain extender (6 mol%) and polyol (15.5 mol%) content, the waterborne polyurethane demonstrated best comprehensive properties. A clear advantage of the approach is that, in contrast with the traditional synthesis technique of waterborne polyurethane, the reaction process did not need any organic solvents to reduce the system viscosity. Also, a more natural optical appearance was obtained by the drying process of waterborne polyurethane itself. The as-developed waterborne polyurethane coating can be extensively used on the artificial leather and synthetic leather surfaces.


Waterborne polyurethane Coatings Phase separation Gloss Application 



Financial support by Changchun Science and Technology Plan Project of china (contract grant number 18DY014).


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Copyright information

© The Polymer Society, Taipei 2019

Authors and Affiliations

  1. 1.Engineering Research Center of Synthetic Resin and Special Fiber, Ministry of EducationChangchun University of TechnologyChangchunPeople’s Republic of China

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