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Antiwear Additives

Anti-wear additives are agents added to lubricants, to protect mating surfaces against excessive friction wear.

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MSP v.2 Styrenated phenol MSP v.2 (Styrenated phenol) is a substance made up of a mixture of products of phenol and styrene reaction: primarily monostyrenated, distyrenated and tristyrenated...
Composition
Phenols, Styrenized phenols
CAS No.
61788-44-1
MSP v.2  Styrenated phenol
Rokolub® AD 232 Rokolub AD 232 is an aryl ester of phosphoric acid (V) in the form of a light yellow to colourless liquid with a characteristic, delicate fragrance. In the presence...
Composition
Phosphate
Rokolub® AD 232
Rokolub® AD 246 Rokolub AD 246 is an AW/EP type lubricant used to improve lubrication capacity of mineral and synthetic oils of POE and PAO type. This product is an essential anti-wear...
Composition
Phosphate
Rokolub® AD 246
Rokolub® AD 246 plus The product is an AW / EP type lubricant (antiwear / extreme pressure) used to ensure high lubricity. Rokolub AD 246 plus is an essential anti-wear and anti-friction...
Composition
Phosphate
Rokolub® AD 246 plus
Rokolub® AD 246 ultra Rokolub AD 246 ultra is an essential anti-wear and anti-friction additive for lubricants dedicated to devices operating at high temperatures. Thanks to its use,...
Composition
Phosphate
Rokolub® AD 246 ultra
Rokolub® AD 268 Rokolub AD 268 increases the lubricating performance of oils and it is used as an AW/EP (anti-wear/extreme pressure) additive. It is a component of formulations...
Composition
Phosphate
Rokolub® AD 268
EXOfos®PB-133 (Tridecyl Ether Phosphate) EXOfos PB-133 is anionic surfactant classified among phosphate esters. This ester is based on ethoxylated isotridecyl alcohol, and it is offered in acidic form....
Composition
Phosphate esters
CAS No.
9046-01-9
EXOfos®PB-133 (Tridecyl Ether Phosphate)
EXOfos®PB-264 (Phosphoric ester) EXOfos PB-264 is an anionic surfactant belonging to the group of phosphoric esters. This ester is based on ethoxylated lauryl alcohol, INCI name: Laureth-4 Phosphate....
Composition
Phosphate esters
CAS No.
68511-37-5
EXOfos®PB-264 (Phosphoric ester)
EXOfos®PB-267 (Phosphoric Ester) EXOfos PB-267 is an anionic surfactant that belongs to the group of phosphoric esters. This ester is based on ethoxylated lauryl alcohol. This product is offered...
Composition
Phosphate esters
CAS No.
68511-37-5
EXOfos®PB-267 (Phosphoric Ester)
ROKAcet O7 (PEG-7 Oleate) ROKAcet O7 is a non-ionic surfactant belonging to the group of polyoxyethylene fatty acid esters (INCI name: PEG-7 Oleate). This surfactant is available in the form...
Composition
Alkoxylated fatty acids
CAS No.
9004-96-0
ROKAcet O7 (PEG-7 Oleate)
ROKAcet LPK (Alkoxylated fatty alcohol) ROKAcet LPK is a non-ionic surfactant from the group of the polyoxyalkylene esters of fatty acids. This surfactant has the form of a clear or slightly cloudy liquid,...
Composition
Alkoxylated fatty acids
CAS No.
96873-84-6
ROKAcet LPK (Alkoxylated fatty alcohol)
Rokolub® AD 132 Rokolub AD 132 is an AW/EP type lubricant used for mineral oils and synthetic oils (POE, PAO) for better lubrication. Rokolub AD 132 is an essential anti-wear and...
Composition
Phosphate
CAS No.
68937-41-7
Rokolub® AD 132
Rokolub® AD 122 Rokolub AD 122 is an AW/EP (antiwear/extreme pressure) greasing additive dedicated to mineral oils and synthetic oils (POE, PAO) with ISO VG 22 viscosity grade....
Composition
Phosphate
CAS No.
68937-41-7
Rokolub® AD 122
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Anti-wear additives are agents added to lubricants, to protect mating surfaces against excessive friction wear.

Introduction of additives for lubricants aims at improving the lubricating properties and reducing the friction coefficient. This group of products is also called as AW additives (anti-wear).

Effect of the AW additives involves the adsorption of a thin layer of polar molecules of the additive onto a metal surface.  The resulting coating adheres to the metal by intermolecular forces (Van der Waals force). Additive molecules arrange themselves by adhering with their “heads” to the metal surface, and leaving the hydrophobic “tail” to face the lubricant, thus forming an oil film.
Metal surfaces protected in such a way have limited direct contact with each other, which prevents their wear. Layers of the additive particles, situated between two metal surfaces, form a system of two brushes that facilitate mutual displacement of elements, and reduce friction in the system.

Anti-wear additives are used in industrial oils such as oils for gear boxes, turbines, hydraulic systems and compressors, as well as in automotive oils.