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WACKER has developed a new silicone surfactant
that significantly accelerates the dewatering of pulp.
The product, PULPSIL?968S, can be used as an active ingredient to formulate dehydrating agents
for pulp washing.
The silicone product accelerates the dewatering of pulp with unprecedented results and significantly reduces the time
required for the washing process.
PULPSIL?968S is a surfactant
based on polyether modified silicone fluids.
This water-dispersible silicone oil has a medium viscosity and its molecular structure, when optimized, allows the surfactant to maintain its previously significant hydrophobicity while having a certain degree of hydrophilicity
.
This increased hydrophobicity compared to other silicone surfactants makes PULPSIL?968S a particularly effective dehydrating agent
.
The hydrophobicity of the new product is also reflected in its extremely low cloud point: according to the DIN EN 1890 E process test, it has a cloud point of 19 degrees Celsius, which is much lower than other silicone surfactants
in the same product family.
The new silicone surfactant no longer disperses in the aqueous medium at temperatures above the cloud point, but forms tiny oil droplets, which provides the prerequisites for
rapid dewatering.
（Jessica）
