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Viscosity buildup in condensation reactions: Reaction conditions and reactor size effects

✍ Scribed by I. S. Dairanieh

Book ID
104522872
Publisher
Society for Plastic Engineers
Year
1991
Tongue
English
Weight
413 KB
Volume
31
Category
Article
ISSN
0032-3888

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✦ Synopsis

Abstract

The viscosity of sulfonated melamine‐formaldehyde resins prepared in batch receptors of different sizes is shown to be a function of the reaction time, temperature, and pH. A formula relating these variables to viscosity buildup is presented. It shows that the pH is more influential than the temperature in increasing viscosity. The reactor mixing patterns are also shown to have a profound influence on resin viscosity. The agitator geometry, and not its tip speed, was found to affect considerably the viscosity buildup. Implications of these observations on the scale‐up of condensation reactions are discussed.

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