Linking of oligoesters hydrolysis to polyurethane coatings
Article first published online: 6 DEC 2013
Copyright © 2013 Wiley Periodicals, Inc.
Journal of Applied Polymer Science
Volume 131, Issue 9, May 5, 2014
How to Cite
2014). Linking of oligoesters hydrolysis to polyurethane coatings. J. Appl. Polym. Sci. 131, 40198, doi: 10.1002/app.40198, and (
- Issue published online: 1 FEB 2014
- Article first published online: 6 DEC 2013
- Manuscript Accepted: 15 NOV 2013
- Manuscript Received: 10 SEP 2013
The hydrolytic stability of a series of oligoesters comprised of three and four different monomers was evaluated. The hydroxyl terminal oligoesters were prepared from adipic acid (AA) and isophthalic acid (IPA), with six different diols and one triol, which included: 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol, neopentyl glycol, 2-methyl-1,3-propanediol, trimethylolpropane, and 2-butene-1,4-diol. The hydroxyl terminated oligoesters were reacted with phenyl isocyanate to form telechelic urethane groups. Hydrolysis rate constants were obtained from plots of acid number vs. time. It was observed that ternary oligoester systems had lower hydrolysis rates than quaternary systems. In addition to investigating the hydrolytic stability of the synthesized oligoesters, polyurethane coatings were produced by reacting the hydroxyl-terminated oligoesters with an aliphatic polyisocyanate (1,6-hexanediisocyanate trimer). Model oliogester hydrolysis was then correlated to the weatherability of a crosslinked polyurethane film. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40198.