Study of the Effect of an Antifoaming Agent on the Evaporation of the Components During the Stirring of a Coating Dispersion Containing a Volatile Agent

Optimization of process parameters of coated pellet production

“…Accordingly, primarily the operational parameters must be considered during the formulation of these compositions. Hence, determination of the critical points of coatings with a liquid containing a volatile component cannot be avoided because the vapour of such materials can be very dangerous [66]. Table 7 presents the composition of the samples.…”

“…The pigment suspension containing 0%, 1% or 20 5% of the API was prepared through Ultra-Turrax (IKA-Werke GmbH & Co. KG, Staufen, Germany) mixing (17,500 rpm) for 10 min. After this, the suspension was poured into the polymer dispersion and mixed with an overhead stirrer (IKA-Werke GmbH & Co. KG) at 210 rpm for 15 min [66]. As a final step, the mixture was sieved.…”

“…Study of evaporation Evaporation of a similar composition containing a volatile component (ethanol) was also studied where the effect of an antifoaming agent (Dimethicon) was measured [66]. In consequence of to its low interfacial tension, it can form a layer on the surface of a liquid, and the effect of this was studied by determination of the quantity of the stirred liquid that was evaporated.…”