Abstract:
Lubricant compositions adapted for use under extreme conditions comprising a major proportion of an oil or grease base material, and a minor proportion of an aromatic polyamide fibrous substance in an amount sufficient to impart a fibrous texture to the base material.
Abstract:
An improved electric field dependent fluid and method of preparing the same for use at temperatures in excess of 100.degree. C. (typically 120.degree. C.) without releasing water comprising: a nonconductive liquid phase; and a dispersed particulate crystalline zeolite phase (e.g., M.sub.(x/n) [AlO.sub.2).sub.x (SiO.sub.2).sub.y ] wH.sub.2 O where M is a metal cation or mixture of metal cations of average valence charge n, x and y are integers and the ratio of y to x is from about 1 to about 5, and w is a variable). Such field dependent fluids are particularly useful in automotive and/or other high temperatures applications.
Abstract:
Novel compositions useful as fluid gelling agents, especially for use in subterranean applications such as drilling fluids, are prepared by reacting an aqueous dispersion of a clay, such as bentonite, with an aqueous gel of a monodispersed mixed metal layered hydroxide of the formula Li.sub.m D.sub.d T(OH).sub.m+2d+3+na) A.sub.a.sup.n, where D is a divalent metal, such as Mg, T is a trivalent metal, such as Al, and A represents other monovalent or polyvalent anions, the formula being described in detail in the disclosure.
Abstract:
Improved composite bearings are provided employing cold forming and sintering techniques. Improvements in compositions for impregnating porous layers of composite bearings are provided comprising lead or lead alloy, perfluorinated polymer, particulate thermoplastic polymer and clay in particular proportions. When such materials are formed into bearings and subsequently sintered, improved resistance to stripping and wear is provided.
Abstract:
High-temperature lubricant compositions which have good extreme pressure and antiwear properties include complex metal chalcogenides having the formula:M.sub.p (M'O.sub.x A.sub.4-x).sub.m.nH.sub.2 Owhere M is a metal selected from the group consisting of: Na, K, Cs, Mg, V, Mn, Fe, Co, Al, Cu, Ga, In, Bi, As, Ni, Zn, Cd, Sb, Sn and Ce;where M' is a metal selected from the group consisting of Mo and W;where A is S or Se;where x ranges from 1 to 3;where p is 1 or 2 depending on the oxidation state of M;where m is ranges from 1 to 5 depending on the oxidation state of M;and n ranges from 0 to 6.
Abstract:
A lubricant composition for use alone or in a lubricating base, comprising a finely divided carbonate of Group IIA metal and a halogenated organic lubricant.
Abstract:
Self-lubricating bearings, such as journal-type bearings are obtained by molding under pressure at elevated temperatures a substantially homogeneous blend of from about 70 to 95% of an ultra high molecular weight ethylene polymer and from about 5 to 30% of a normally solid lubricant which can be a wax, fat or mixtures thereof, or a mixture of either or both of these lubricants with a grease. The bearings exhibit excellent dimensional stability, good wear resistance, and a surface which is not oily to the touch. The bearings are self-lubricating, slowly releasing lubricant at temperatures developed in ordinary use.
Abstract:
This invention relates to organosiloxanes which have SiC-bonded ester groups and contain at least one unit of the general formula: ##EQU1## in which R represents the same or different monovalent hydrocarbon radicals having from 1 to 12 carbon atoms, which are free of aliphatic unsaturation and which may contain one ether oxygen atom; R' represents hydrogen or a methyl group (CH.sub.3) and a is 0, 1 or 2. These organosiloxanes can be prepared by hydrolyzing or co-hydrolyzing silanes of the general formula:ROOCCH.sub.2 CH(COOR)CH.sub.2 CHR'CH.sub.2 Si(CH.sub.3).sub.a X.sub.3-a,where R, R' and a are the same as above and X represents the same or different hydrolyzable atoms or groups. Also, they may be prepared by the addition of a diester of allyl succinic acid and/or methallyl succinic acid to an organosiloxane containing Si-bonded hydrogen. These new organosiloxanes may be used as lubricants for inorganic and organic fibers, metal surfaces and as hydraulic fluids.
Abstract:
A water base drilling fluid having enhanced lubricating properties in the presence of polyvalent cations comprising a mixture of (1) water; (2) finely divided inorganic solids; (3) an alkanolamide of a saturated fatty acid having 8 to 20 carbon atoms, or triglycerides thereof, and (4) an alkanolamide of an unsaturated fatty acid having 18 carbon atoms, or triglycerides thereof.
Abstract:
Stabilized organopolysiloxane oils having at least one aliphatic hydrocarbon radical with at least two carbon atoms and containing rubidium and/or cesium compounds which are at least partially soluble in the oil, in which the amount of rubidium and/or cesium present in the oil is from 0.01 to 3 percent by weight, based on the weight of the oil.The stabilized organopolysiloxane oils are useful as lubricants or as additives for lubricating compositions.