1. Additives acting physically in the lubricant mass
1.1 Thickening additives
In addition to the viscosity-index-enhancing additives discussed at 4.2 , which thicken oils when hot while keeping them fluid when cold, there are products used mainly in industrial lubrication, which can be used to formulate lubricants with a higher viscosity than is possible with the available ranges of mineral and...
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Additives acting physically in the lubricant mass
Additives acting physically at liquid-solid interfaces
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Lubricant additives are commercially available either as elementary additives or base components or, increasingly, as pre-formulated additives known as "additive packages", "performance additives" or "packages".
The former are mainly used in the preparation of industrial oils, metalworking lubricants and greases, or as complementary additives...
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