Effect of catalysts on the reaction of an aliphatic isocyanate and water

  • Ni H
  • Nash H
  • Worden J
 et al. 
  • 42

    Readers

    Mendeley users who have this article in their library.
  • 38

    Citations

    Citations of this article.

Abstract

The kinetics of the reaction of aliphatic isocyanate with water were investigated with hexyl isocyanate as a model compound. The kinetic study was carried out with a titration method to determine the concentration of the isocyanate group as a function of time. Gas chromatography was used to augment the kinetic data obtained from the titration method. The effects of an organic acid left bracket p-toluene sulfonic acid monohydrate (p-TSA) right bracket , a tertiary amine left brace diazabicyclo left bracket 2.2.2 right bracket octane (DABCO) right brace , and an organotin compound left bracket dibutyltin dilaurate (DBTDL) right bracket on the reaction were investigated for the conversion of isocyanate to a urea. Under the reaction conditions in this study, urea was the only product observed. The rate constants indicated that p-TSA had low catalytic activity, DABCO had intermediate catalytic activity, and DBTDL had high catalytic activity. A reaction mechanism was proposed for each of the catalysts. copy 2002 Wiley Periodicals, Inc. J. Polym. Sci. Part A: Polym. Chem. 17 Refs.

Author-supplied keywords

  • Catalysts
  • Kinetics
  • Polyurethanes

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document

Authors

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free