Abstract:
Functional fluids comprising an oil of lubricating viscosity, the reaction product of an amine and a sulfonic acid, and at least one sulfur-containing compound of the structure(RX).sub.3 P.dbd.Xwhere X is sulfur or oxygen exhibit good anti-rust and antiwear performance.
Abstract:
A grease composition for a constant velocity joint involves a base oil containing a thickener and boron nitride powders and optionally an organozinc compound.
Abstract:
A grease composition for a constant velocity joint contains a base oil containing 2 to 25 wt.% of a thickener based on total weight of the composition, 0.5 to 20 wt.% of boron nitride powders based on total weight of the composition, and 0.1 to 10 wt.% of an extreme pressure agent based on total weight of the composition selected from the group consisting of molybdenum dithiocarbamate, a sulfur and phosphorus-containing extreme pressure agent, and mixtures thereof. The sulfur and phosphorus-containing extreme pressure agent consists of a sulfur-containing compound and a phosphorus-containing compound. The sulfur-containing compound is selected from the group consisting of a sulfide of fats and oils, a polysulfide, and mixtures thereof. The phosphorus-containing compound is selected from the group consisting of a phosphate, a phosphite, and mixtures thereof.
Abstract:
Disclosed is a lubricating composition for hot-rolling steel, which comprises a base oil or base grease and a heat-insulating agent. Especially, (A) an inorganic compound which is melted by an absorption of heat at a temperature lower than 1200.degree. C. and (B) an inorganic powder which is not melted or decomposed at a temperature lower than 1200.degree. C. and has a heat conductivity lower than 0.01 cal/cm.s. .degree.C. at room temperature and a friction coefficient smaller than 0.7 are incorporated in specific amounts singly or in combination in the composition. This lubricating composition has an excellent heat-insulating effect and effectively prevents the thermal crown of a work roll.
Abstract translation:公开了一种用于热轧钢的润滑组合物,其包含基础油或基础油脂和绝热剂。 特别地,(A)通过在低于1200℃的温度吸收热而熔化的无机化合物和(B)在低于1200℃的温度下未熔融或分解的无机粉末,并且具有 导热系数低于0.01 cal / cm.s。 室温下的温度和小于0.7的摩擦系数在组合物中单独或组合地以特定量引入。 该润滑组合物具有优异的绝热效果,并且有效地防止了工作辊的热冠。
Abstract:
Coating formulations which behave as elastic solids having reversible stress-induced fluidity are prepared by creating a fluid having distributed therein effective amounts of ionic charge sites and countercharge sites. For instance, elastic solids having reversible stress-induced fluidity are prepared by combining liquid formulations with a dispersion of a small, but effective, amount of at least one crystalline mixed metal hydroxide conforming substantially to the formulaLi.sub.m D.sub.d T(OH).sub.(m+2d+3+n.multidot.a) (A.sup.n).sub.a .multidot.xH.sub.2 Owhere m is zero to one, D is a divalent metal, d is from zero to 4, T is a trivalent metal, A represents at least one anion or negative-valence radical of valence n and a is the amount of A, where n is 1 or more, (m+2d+3+n.multidot.a) is equal to or greater than 3, (m+d) is greater than zero, and xH.sub.2 O represents excess waters of hydration, if any. The coating formulations include, for example, paints, resin coatings, adhesives, de-icers, curable coatings, dryable coatings, and hardenable coatings.
Abstract:
Disclosed are electrorheological fluids including vermiculite treated with an amine salt, methods of making the same, propylene carbonate adsorbed on the solid phase, butyl benzoate added for the liquid phase, and methods of using frequency response of electrorheological fluids to vary apparent viscosity and to compensate for temperature.
Abstract:
Silicone grease compositions are prepared by blending a thickening agent with a liquified crosslinked organosiloxane gel produced using a platinum-catalyzed hydrosilylation reaction. The gel is liquified by application of a shearing force to the crosslinked gel. The shearing force can be applied prior to and/or during blending of the gel with the thickener.
Abstract:
Encapsulating particles of solid thiocarbonate salts, esters and complexes with air- and water-impermiable coatings produces compositions having long-term stability.
Abstract:
Formulations or products are caused to be active antimicrobials by the addition thereto of at least one effective amount of at least one crystalline mixed metal hydroxide (MMOH) conforming substantially to the formulaLi.sub.m D.sub.d T(OH) (m+2d+3+na) (A.sup.n).sub.a.xH.sub.2 Owhere m is zero to one, D is a divalent metal, d is from zero to 4, T is a trivalent metal, A represents at least one anion or negative-valence radical, (m+2d+3+na) is equal or to greater than 3, (m+d) is greater than zero, and xH.sub.2 O represents excess waters of hydration. The MMOH forms an adduct with, an coats, the microbes, thereby deactivating the microbes.
Abstract:
Piston deposits resulting from neutralizing combustion acids present in the lubricating oil circulating within the lubrication system of an internal combustion engine are reduced or eliminated by first contacting the acids with a soluble weak base in the piston ring zone of the engine to form soluble neutral salts containing the weak base and the combustion acids. Thereafter, the neutral salts are contacted with a heterogeneous strong base immobilized within the lubrication system but outside of the piston ring zone. The strong base displaces the weak base from the neutral salts, returning the weak base to the oil for recirculation to the piston ring zone for further use. The remaining strong base/combustion acid salts are immobilized as deposits with the strong base rather than on the piston. In a preferred embodiment, trioctadecyl amine is the weak base and zinc oxide is the strong base. In a particularly preferred embodiment, the strong base is incorporated on a substrate, preferably a cement binder.