To provide a lubricant composition for shock absorbers, a shock absorber, and a method for adjusting the friction of a lubricant composition for shock absorbers, each capable of satisfying both operational stability and ride comfort particularly at the time of a minute amplitude. The lubricant composition for shock absorbers contains a base oil and a friction adjusting agent, wherein the friction adjusting agent contains a pentaerythritol ester, the pentaerythritol ester contains a pentaerythritol tetraester at the highest proportion or in an amount of 50 mass % or more, and the pentaerythritol ester content is 0.5 mass % or more.

Lubricant composition, in particular a cooling lubricant solution, based on ionic and/or organoelemental compounds.

Lubricant composition, in particular a cooling lubricant solution, based on ionic and/or organoelemental compounds.

A transmission fluid composition contains a major amount of a lubricating oil basestock, and a minor amount of an additive package comprising: (i) a mixture comprising two or more phosphites and/or phosphates; (ii) one or more thioester compounds; (iii) a detergent comprising calcium salicylate; and (iv) a poly(alkylene amine)-based ashless dispersant endcapped with metallocene-catalyzed PAO arms. Such a transmission fluid may be used for controlling/reducing wear in at least partially electrically-powered transmissions and/or for cooling/insulating electrical/electronic components of at least partially electrically-powered drivetrains.

A phosphate complex of a borate ester provides wear- and friction-reducing performance to an engine or driveline device. The complex may be a pyroborate-hydrocarbyl-substituted phosphate adduct. Boric acid may be reacted with a diol to form an ester, then reacting said ester with an ammonium salt of phosphoric acid or a hydrocarbyl-substituted phosphoric acid.

The invention relates to a polyamide-based surface material having fillers which improve the tribologically active properties, wherein the fillers comprise at least one metal sulfide and/or calcium phosphate. The invention further relates to a three-dimensional molded body consisting of a surface material, produced, in particular, as an injection-molded part or extrusion part and or by additive fabrication.

A lubricating oil composition is described. The composition includes a major amount of a base oil of lubricating viscosity and a polyphosphate-based dispersion. The dispersion includes an ammonium polyphosphate and a dispersing agent.

A water-based lubricant for plastic working of a metallic material is obtained by adding to a water-based medium: (A) a polymer and/or a salt thereof containing a carboxylic acid or a derivative thereof as a constituent monomer; (B) an oxoacid of tungsten, of silicon, or of phosphorus, or a condensate thereof, and/or a salt thereof; (C) a hydroxide of an alkali metal; and (D) a lubricating component (D), and the solid content weight ratio (A)/[(A)+(B)+(C)+(D)] is 0.05 to 0.4.

A tribological system, comprising a main body and a sandwich lubrication, in which the sandwich lubrication includes a binder-free solid lubricant layer comprising a solid lubricant, and a lubricant layer comprising a lubricant. The binder-free solid lubricant layer and the lubricant layer are present as separate layers on the main body and wherein the mass ratio of solid lubricant to lubricant is at most 0.05:1.

A tribological system, including a main body and a sandwich lubrication, wherein the sandwich lubrication includes a binder-free solid lubricant layer including a solid lubricant, and a lubricant layer including a lubricant. The binder-free solid lubricant layer and the lubricant layer are present as separate layers on the main body and the mass ratio of solid lubricant to lubricant is at most 0.05:1. The solid lubricant includes polytetrafluoroethylene (PTFE), metal sulfide, graphite, graphene, boron nitride (hexagonal), calcium phosphate, silicate, layered silicate, or mixtures thereof.