Abstract:
A new water based lubricant composition for cold impact extrusion of spark plug bodies or the like, said composition being free of lower molecular weight flammable aliphatic and alicyclic compounds and comprising: an alkaline soluble thermoplastic acrylic resin binder, polytetrafluoroethylene particulate powder material, an alkaline solubilizing agent to maintain the pH of the composition within the range of approximately 8 to 11, a thickening agent, a defoaming agent, and the balance water; and a novel process of cold forming of metal or steel parts.
Abstract:
A metal-free lubricant composition for use in threaded tube and pipe connections includes graphite and a substantially nonabrasive, friction increasing adjusting component, both dispersed in a lubricant base material in which a polyalkylene is dissolved, with the graphite being present in an amount effect to decrease a coefficient of friction of said composition, the friction increasing adjusting component being present in an amount effective to increase the coefficient of friction of the composition, and the polyalkylene being present in an amount effective to enhance formation of graphite flakes from graphite particles upon application of pressure. The lubricant composition can provide corrosion resistance as well as similar or superior lubricating properties in comparison to conventional metal-containing grease compositions.
Abstract:
A water washable thermally conductive grease useful for thermal coupling of electronic chips and heat sinks in electronic modules comprises a hydrophilic liquid polymer carrier, an antioxidant, and up to 90 weight percent of a microparticulate thermally conductive filler. In a preferred embodiment, the thixotropic dielectric composition further comprises an ionic surfactant to promote wetting/dispersion of the microparticulate filler. The thermally conductive grease is non-corrosive, resistant to shear induced phase destabilization and capable of being washed from module surfaces with aqueous solutions. Substitution of the present hydrophilic based greases for art-recognized solvent washable greases eliminates use of non-aqueous solvents in electronic module processing/reprocessing operations.
Abstract:
A lubricant composition for use in threaded tube and pipe connections comprises from 10 to 70% by weight of pure, crystalline, graphite and from 0.1% to 10% by weight (calculated of graphite) of a special additive in the form of strongly polarizable or ionizable organic compounds like e.g. amines, amine salts, metal-amine complexes, combinations of amines with polymers, polymeric amines, ammonium compounds, alkylsulphates, organic phosphates, phosphonates and sulphonates. The balance is formed by a supporting vehicle such as an oil or grease. In this composition, the performance characteristics of the graphite have been improved by the special edditive such that it can be used for lubricating and sealing threaded tube and pipe connections under conditions of extreme pressure.
Abstract:
The flammability of an aluminum complex grease can be reduced by incorporating a flame retardant amount of calcium oxide into the grease provided the calcium oxide has a Loss on Ignition value of less than 3.0.
Abstract:
A water-glycol hydraulic fluid comprising a higher aliphatic acid in a ratio of 2 to 15% by weight, alkali hydroxide in an amount less than an equivalent amount of the higher aliphatic acid, and an organic alkaline compound containing nitrogen atoms in an amount sufficient to adjust the pH of the whole fluid to 10 to 12 is disclosed.This hydraulic fluid has excellent wear resistance and also excellent sludge solubility.
Abstract:
The apparatus to put the process of the invention into practice comprises a silo 1 to dispense fat (oil), a duct 2 to feed in lime and optionally inert additives, a mixer 3 provided with a stirrer, at least a charging pot 4, a pocket vessel 5, a hopper provided with a distribution blade 6, a conveyor belt 7 continuously operating internally of the baking furnace, a baking furnace 8, a grid-type conveyor belt 9, a first crusher 10 and a mill 11. The powder lubricant obtained by said continuous process also has the advantage of exhibiting a better morphological appearance, more hardness and improved adhesion to the substrate to be lubricated.
Abstract:
A low foaming, rust inhibiting composition is disclosed which contains:A. a rust inhibiting amount of a dicarboxylic acid of the formula: ##STR1## wherein Z is COOH or H, and one of each is present, and x and y are from 3 to 9, with x+y=12;B. a foam inhibiting amount of a triglyceride acid of the formula: ##STR2## wherein x and y are integers from 3 to 9, x and y together equal 12. R.sub.1 and R.sub.2 are saturated/unsaturated hydrocarbon terminals of fatty acids esterified with glycerol; andC. a base sufficient to adjust the pH of the composition to about 6.5 to 10.5.
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 heterogenous strong base immobilized within the lubrication system by 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 weak base is incorporated on a substrate, preferably a cement binder.
Abstract:
Shear stable antimisting properties are provided to a wide variety of formulations comprising aqueous liquids through the use of a viscoelastic surfactant which comprises a surfactant compound having a hydrophobic moiety chemically bonded to an ionic, hydrophilic moiety and an electrolyte having a moiety that is capable of associating with the surfactant ion. Optionally, an additional amount of electrolyte can be added to the viscoelastic surfactant to further reduce misting. The viscoelastic surfactant can also be a nonionic surfactant.