Oil Modified and Waterborne Polyurethane Resin

By Güngör Gündüz, Yasir Idlibi, Güneri Akovali

Air-dried water-dispersed polyurethane resins were produced from poly(propylene-ethylene) copolymer triol, monoglyceride, toluene diisocyanate, and tartaric acid. Monoglyceride and poly(propylene-ethylene) copolymer triol were employed at different ratios, with the monoglyceride ranging between 50-70% of the total polyol used, and the isocyanate/hydroxyl ratio was kept at 1.82.

Some surfaces showed heavy wrinkling when the monoglyceride was below 54.5% and above 60%, yet clear and unwrinkled surfaces occurred when the monoglyceride fell between 54.5-60%. The hardness values increased as the percentage of monoglyceride increased. Hard-ness, impact, adhesion, bending, and abrasion tests were applied and the samples passed each test. All exhibited very good flexibility and toughness.