The applications of silicone antifoams
Silicone Antifoams are extensively used where product of process foaming problems are encountered. This selector guide describes a complete line of Mera Chemical Silicones antifoams which have been found particularly useful in many applications.
In selecting the best type and quantity of silicone defoamer, each application must be considered separately. In addition to the primary differences of the non-aqueous and aqueous system requirements, there are differences in the same process when formulations are changed.
Some of the factors are:
Chemical nature of the foam foaming agent
Foaming tendency of the agent
Solubility and concentration
Electrolytes, colloids or other surface active agents present
Temperature, pH and viscosity of the system
Processing equipment involved
End use of product containing the antifoam
It is therefore best to evaluate several antifoams in each system to determine type and concentration needed to assure optimum results.