Abstract:
A low sediment process for forming a borated, oil soluble, polymer-substituted, nitrogen- or ester-containing lubricating oil additive. A polymer-substituted, nitrogen- or ester-containing additive in the presence of a solvent therefor, is contacted under boronating reaction conditions in a reaction zone with particulate boric acid. The boric acid has a particle size distribution in lubricating oil characterized by a .phi. value of not greater than about 450. The .phi. value is the ratio of said particles' total spherical volume divided by said particles' total spherical external surface area; i.e., ##EQU1## wherein, for each of a plurality of distribution segments defining a particle size range; d.sub.i is the average particle diameter for the ith distribution segment; N.sub.i is the particle volume percent of the ith distribution segment; and the sum is taken over all the distribution segments.
Abstract:
Lubricant additives are disclosed which are produced by reacting an alkanolamine, a carboxylic acid and phosphorous acid. The reaction product may also include a boron compound and/or a monofunctional alcohol. The additives are useful in combination with metalworking oils, particularly in extreme pressure applications, to replace currently used chlorinated paraffin additives.
Abstract:
Disclosed is a grease composition comprising a major amount of a lubricating oil base vehicle, a lithium gellant in an amount sufficient to thicken the base vehicle to grease consistency, an alkali-metal borate in an amount sufficient to impart extreme-pressure properties to the grease and from 0.1 to 10.0 mass percent of antimony dithiocarbamate.
Abstract:
A high performance lubricating grease effectively lubricates and greases front-wheel drive joints. The lubricating grease has excellent extreme pressure properties and antiwear qualities and is economical, effective, and safe. In one preferred form, the lubricating grease comprises a base oil, a polyurea thickener, an additive package comprising calcium sulfate and calcium acetate.
Abstract:
Lubricant additives are producd by reacting an alkoxplated amine with phosphorous acid. The additives preferably also contain a boron moiety which is reacted with the phosphorous acid and amine, preferably in a one step reaction. More preferably, a mono-functional alcohol or a long-chain aliphatic carboxylic acid is added to this mixture. The additives are particularly useful in metalworking oils and particularly as extreme pressure additives to replace the currently used chlorinated paraffin additives.
Abstract:
A lubricating composition is provided which is a stable dispersion of a synthetic oil, such as polyalphaolefin oil; finely divided polymeric fluorocarbon powder, such as polytetrafluoroethylene (e.g., Teflon); a silicon dioxide powder which is substantially 100% hydrophobic; a glycol, such as polypropylene glycol; a substance to increase viscosity, such as polybutene; and an agent to withstand extreme compression loads, such as an amine phosphate. The lubricating composition is made where ingredients are added in a particular sequence and where they are subjected to the shearing action at the elevated temperatures and under vacuum.The lubricating composition provides high corrosion resistance due to the absence of dissolved air and moisture. It also has an excellent lubricity, extremely low moisture absorbancy, a very low oxidation rate and an outstanding performance under extreme compression conditions.
Abstract:
A process is provided for lubricating and protecting bearings in steel and process mills. In the process, metal is processed in the mill and conveyed on caster rollers. The caster rollers are lubricated with a special grease which enhances the longevity of the rollers, protects the rollers from rust and corrosion, and prevents the grease from leaking out of the rollers. In the preferred form, the grease comprises a water-resistant polymer to prevent the grease from washing out of the rollers and bearings when the metal workpiece is quenched with a high pressure water spray.
Abstract:
A high performance sulfated lubricating grease effectively lubricates front-wheel drive joints as well as other equipment. The lubricating grease has excellent extreme pressure properties and antiwear qualities and is economical, effective, and safe. In one preferred form, the sulfated lubricating grease comprises a base oil, a polyurea thickener, a borated oil-separation inhibitor, and a special synergistic, additive package comprising calcium sulfate and calcium carbonate.
Abstract:
Aqueous fluids having a good combination of anti-bacterial properties, stability in hard water, a reduced foaming tendency in soft water and at times a reduced boron content are obtained by the use as additive of a combination of a water-soluble hydroxy di- or tri- carboxylic acid an an excess of an alkanolamine, additive concentrates for incorporation into the aqueous fluids and the aqueous fluids themselves.