98 results about "Calcium Salicylate" patented technology

The invention discloses a synthesis method of a calcium-magnesium salicylate composite detergent in the field of lubricant additives. The method comprises the following steps: adding alkyl salicylic acid and solvent xylene in a reaction container, adding calcium oxide, accelerant, auxiliary promoter and the like in a stirring state, and carrying out a neutralization reaction when a reaction temperature rises to the temperature needed by the neutralization reaction; after the neutralization reaction is ended, adding magnesium oxide, water, ammonia water, auxiliary promoter and the like, charging carbon dioxide and carrying out a carbonation reaction; after the carbonation reaction is ended, carrying out product post-treatment to obtain a lubricant detergent product. The method disclosed by the invention achieves the following beneficial effects: the alkali number of the calcium-magnesium salicylate composite detergent prepared by the method is greater than 400mg KOH / g, the thermal oxidation stability and the high-temperature detergency of lubricant oil are obviously improved, the dispersibility and the wear resistance of the lubricant oil are improved to a certain extent, and the product stability is great.

Provided is a lubricating oil composition for a continuously variable transmission, said composition exhibiting a low viscosity whilst maintaining the viscosity required of the lubricating oil composition throughout a period of use in a mechanism, and maintaining a high friction coefficient between metals so as to ensure a high power-transmitting force provide the wet clutch friction characteristics and the shudder prevention properties required in a transmission. The composition also achieves improved fuel economy due to a low traction coefficient. In the composition, (B) a phosphorus compound, (C) a calcium salicylate and / or a calcium sulfonate, (D) a boron-modified ashless dispersant, and (E) a friction regulating agent are included, each at a specified amount, in a base-oil that has been adjusted so that the product (ECxV40) of the mass percent (EC(mass%)) of a saturated cyclic component, as based on the total base-oil mass, and the kinematic viscosity (V40(mm2 / s)) at 40 DEG is equal to or less than 500, and the kinetic viscosity at 100 DEG is 3.6-4.1mm2 / s. The lubricating oil composition has a kinematic viscosity at 100 DEG of 5.2-5.6mm2 / s and a viscosity index of equal to or greater than 165.

Lubricating oil compositions having a sulfated ash content of no more than 1.0 mass %, which contain a major amount of oil of lubricating viscosity, a minor amount of calcium salicylate detergent, an amount of a magnesium-based detergent providing the lubricating oil composition with at least 200 ppm of magnesium, an amount of a sulfur-containing molybdenum compound providing the lubricating oil composition with at least 20 ppm of molybdenum, and at least one nitrogen-containing dispersant providing the lubricating oil composition with at least 0.9 mass % nitrogen, which compositions provide improved top ring wear protection in internal combustion engines.

Lubricating oil compositions having a sulfated ash content of no more than 1.0 mass %, which contain a major amount of oil of lubricating viscosity, a minor amount of calcium salicylate detergent, an amount of a magnesium-based detergent providing at least 200 ppm of magnesium, and a basic, low molecular weight, nitrogen-containing dispersant, which compositions provide improved top ring wear protection in internal combustion engines.