Additive Package Differences

Joined
Jan 30, 2018
Messages
702
Location
East Texas
With polyurea being a considerably polar family of compounds, the greases made using this thickener must have an additive package that is better tailored with this in mind. What kind of changes are made, or what does a polyurea additive package look like in contrast to, say, a lithium complex or CSOB blended grease? Do they still use a large portion of sulfurized olefins?
 

 


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Grease Technology - Part I and II
"Polyurea Greases are made by mixing oils with suitable amines and isocyanates or diisocynanates. Polurea greases are also good high temperatures greases. These greases are NOT currently compatible with any other grease. They do perform well in low shear applications such as ball bearings, but not as well in high-shear applications such as roller bearings."
 
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