Skip to main content

Preparation and stability of aqueous acrylic polyol dispersions for two-component waterborne polyurethane


In this study, aqueous acrylic polyol dispersions with high stability for a two-component waterborne polyurethane were prepared. To improve the stability of acrylic dispersions, the influence of the acrylic acid (AA) addition method, neutralization, water addition rate during the dilution process, and dispersion equipment on the stability of the aqueous acrylic polyol dispersion was studied using dynamic light scattering and a thermal storage experiment. The acrylic resins’ structure was examined using Fourier transform infrared spectra, and the water resistance of the resultant films was investigated by electrochemical measurements and a water-swelling experiment. The dispersions prepared by two-step AA addition exhibited better particle size distribution, viscosity, and thermal storage compared with those prepared by one-step AA addition. Furthermore, the acrylic resin prepared by two-step AA addition was observed to possess a higher acid value. The corrosion currents of films based on dispersions prepared by two-step AA addition decreased to a smaller extent after 24 h of immersion in water. The dispersions afforded smaller particles when larger amounts of neutralizer and slower water addition rates were used. The dispersions prepared using a sawtooth disk dispersion machine displayed better performance than that prepared using a homogenizer dispersion machine.

This is a preview of subscription content, access via your institution.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9
Fig. 10


  1. Melchiors, M, Sonntag, M, Kobusch, C, Jurgens, Eberhard, “Recent Developments in Aqueous Two-Component Polyurethane (2K-PUR) Coatings.” Prog. Org. Coat., 40 (1–4) 99–109 (2000)

    Article  Google Scholar 

  2. Wicks, ZW, Jr, Wicks, DA, Rosthauser, JW, “Two Package Waterborne Urethane Systems.” Prog. Org. Coat., 44 (2) 161–183 (2002)

    Article  Google Scholar 

  3. Ley, DA, Fiori, DE, Quinn, RJ, “Optimization of Acrylic Polyols for Low VOC Two-Component Water Reducible Polyurethane Coatings Using Tertiary Isocyanate Crosslinkers.” Prog. Org. Coat., 35 (1–4) 109–116 (1999)

    Article  Google Scholar 

  4. Huybrechts, J, Bruylants, P, Vaes, A, De Marre, A, “Surfactant Free Emulsions for Waterborne Two-Component Polyurethane Coatings.” Prog. Org. Coat., 38 (2) 67–77 (2000)

    Article  Google Scholar 

  5. Park, SH, Chung, D, Hartwig, A, Kima, BK, “Hydrolytic Stability and Physical Properties of Waterborne Polyurethane Based on Hydrolytically Stable Polyol.” Colloids Surf. A, 305 (1–3) 126–131 (2007)

    Article  Google Scholar 

  6. Ge, Z, Luo, Y, “Synthesis and Characterization of Siloxane-Modified Two-Component Waterborne Polyurethane.” Prog. Org. Coat., 76 (11) 1522–1526 (2013)

    Article  Google Scholar 

  7. Zhang, FA, Yu, CL, “Application of a Silicone-Modified Acrylic Emulsion in Two-Component Waterborne Polyurethane Coatings.” J. Coat. Technol. Res., 4 (3) 289–294 (2007)

    Article  Google Scholar 

  8. Akbarian, M, Olya, ME, Ataeefard, M, Mahdavianc, M, “The Influence of Nanosilver on Thermal and Antibacterial Properties of a 2K Waterborne Polyurethane Coating.” Prog. Org. Coat., 75 (4) 344–348 (2012)

    Article  Google Scholar 

  9. Billiani, J, Wilfinger, W, “New Low-VOC Acrylic Polyol Dispersions for Two-Component Polyurethane Coatings.” Surf. Coat. Int. Part B Coat. Trans., 85 (1) 191–195 (2002)

    Article  Google Scholar 

  10. Xinhua, Z, Weiping, T, Jianqing, H, “Preparation and Characterization of Two-component Waterborne Polyurethane Comprised of Water-soluble Acrylic Resin and HDI Biuret.” Chin. J. Chern. Eng, 14 (1) 99–104 (2006)

    Article  Google Scholar 

  11. Lee, H-T, Wu, S-Y, Jeng, R-J, “Effects of Sulfonated Polyol on the Properties of the Resultant Aqueous Polyurethane Dispersions.” Colloids Surf. A Physicochem. Eng. Aspects, 276 (1–3) 176–185 (2006)

    Article  Google Scholar 

  12. Kim, DH, Lee, YH, “Synthesis and Surface Properties of Self-crosslinking Core-Shell Acrylic Copolymer Emulsions Containing Fluorine/Silicone in the Shell.” Colloid Polym. Sci., 9 (1) 1435–1536 (2013)

    Google Scholar 

  13. Socrates, G, Infrared Characteristic Group Frequencies. Wiley, Great Britain, 1980

    Google Scholar 

  14. Lee, SK, Kim, BK, “High Solid and High Stability Waterborne Polyurethanes Via Ionic Groups in Soft Segments and Chain Termini.” J. Colloid Interface Sci., 336 (1) 208–214 (2009)

    Article  Google Scholar 

  15. Hunter, RJ, Zeta Potential in Colloid Science: Principles and Applications. Academic Press, London, 1981

    Google Scholar 

  16. Stamm, M, Polymers Surface and Interfaces, 1st ed. Springer, Berlin, 2008

    Book  Google Scholar 

Download references


The authors would like to acknowledge the support of the Key Scientific and Technological Project of Zhejiang Province, China (Grant No. 2013C01095).

Author information

Authors and Affiliations


Corresponding author

Correspondence to Yali Liu.

Rights and permissions

Reprints and Permissions

About this article

Verify currency and authenticity via CrossMark

Cite this article

Wang, L., Xu, F., Li, H. et al. Preparation and stability of aqueous acrylic polyol dispersions for two-component waterborne polyurethane. J Coat Technol Res 14, 215–223 (2017).

Download citation

  • Published:

  • Issue Date:

  • DOI:


  • Acrylic polyol
  • Aqueous dispersion
  • Stability