Novolacs from paraformaldehyde
- 1 April 1979
- journal article
- research article
- Published by Wiley in Journal of Applied Polymer Science
- Vol. 23 (7) , 2083-2088
- https://doi.org/10.1002/app.1979.070230718
Abstract
Novolacs were prepared from phenol, paraformaldehyde, and variable amounts of water and methanol using oxalic acid as a catalyst. The retarding effect of water and methanol is clearly shown. Diffusion of reactants in the two‐phase system does not seem to have a bearing on the measurements of reaction kinetics. A correlation between viscosity and refractive index of the polymer phase is shown. The advantages of using paraformaldehyde instead of aqueous formaldehyde solutions are summarized.Keywords
This publication has 1 reference indexed in Scilit:
- Molecular Weight Estimation of Phenol-Formaldehyde ResinKobunshi Kagaku, 1971