Tezislər / Theses

THE 3
rd
 INTERNATIONAL SCIENTIFIC CONFERENCES OF STUDENTS AND YOUNG RESEARCHERS 
dedicated to the 99
th
anniversary of the National Leader of Azerbaijan Heydar Aliyev
317
Waterborne Polyurethane Coatings 
Considering the environmental issues related with poisonous air 
contaminants and volatile organic chemicals (VOCs), waterborne 
polyurethane dispersions (WPUDs) becoming more prominent as coating 
materials. The name “waterborne” (WB) is used for coating systems which 
utilize water as solvent. Sometimes different solvents can also be applied 
alongside water such as glycol ethers, but water content should be upto 80 
%. WBs can be further classified into water-dispersible/colloidal (dispersions), 
water-soluble/water-reducible (solutions) and emulsions (latex) paints (Y. Lu, 
2008). Depending on the resin choice, performances and physical properties 
of previously mentioned type of WB can vary. Core advantages of vegetable 
oil-based WB coatings are non-polluting, quick drying, easy to handle nature, 
cheap price, and environmentally friendly aspects (Gündüz, 2002). 
High Solids Polyurethane coatings
High solids PU coatings have also gained considerable attention again 
for mainly environmental issues. Nowadays, high solids PU coatings mainly 
used for marine coating and protective coating purposes. Usually, these 
coatings tend to have greater content of solids, about 70-80 % solids in paints 
(E. Sharmin, 2015). Additionally, they are known to have less volatile organic 
chemicals (VOCs) compared to conventional solvent-based PU coatings. 
What is more, they also outdo their traditional counterparts with the same 
characteristics such as durability 
References 
1. Chaudhari, V. G. (2013). Development of Eco-friendly PU Coatings Based on Neem Oil. 
2. Datta, J. &. (2017). Synthesis, structure and properties of poly(ester-urethane)s obtained 
using bio-based and petrochemical 1,3-propanediol and 1,4-butanediol. 
3. E. Sharmin, F. Z. (2015). Recent advances in vegetable oils based environment friendly 
coatings. Ind. Crops Prod. 76, 215-229. [Gündüz, 2002] 
4. Sharmin, E. &. (2012). Polyurethane: An Introduction. London: InTech. 
5. Y. Lu, R. L. (2008). SOWP dispersions:effects of polyol functionality and hard segment 
content on properties,. Biomacromolecules 9, 3332–3340 

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