Behzad Ghobadi Jola - Department of Chemistry, Payame Noor University, Tehran, Iran
Behzad Shirkavand Hadavand - Department of Resin and Additives, Institute for Color Science and Technology, Tehran, Iran
Khadijeh Didehban - Department of Chemistry, Payame Noor University, , Tehran, Iran
Ahmad Mirshokraie - Department of Chemistry, Payame Noor University, , Tehran, Iran

Polyurethane dispersions (PUDs) have recently emerged as important alternatives to their solvent based counterparts for various applications due to increasing health and environmental awareness. A series of aqueous polyurethane dispersions containing carboxylate anion as hydrophilic pendant groups were synthesized through step growth polymerization reaction using isophorone diisocyanate (IPDI), 2- bis(hydroxymethyl) propionic acid (DMPA), polyethylene glycol (PEG) of various molecular weight and triethylamine (TEA) by the acetone process. Effect of PEG molecular weight was investigated on molecular structure and physical and rheological properties of polyurethane dispersions

Polyurethane dispersions, viscosity, Rheology, Molecular weights