Abstract:
A grease composition having improved load-carrying capability is disclosed. More specifically, the load-carrying capability of a grease is increased when a polyhydric alcohol having at least three hydroxy groups and at least two metal hydrocarbylthiophosphate compounds in which the metal is different in at least two compounds are incorporated into said grease. Glycerol is a preferred polyhydric alcohol while antimony dialkyldithiosphosphate and zinc dialkyldithiophosphate are preferred hydrocarbylthiophosphate compounds.
Abstract:
A radiation-resistant grease that is stable under elevated temperatures is disclosed. The grease is prepared by mixing a bentonite-based thickening agent with a base oil composed of m-(m-phenoxyphenoxy)diphenyl, pentaphenyl ether, a monoalkyltriphenyl ether or a monoalkyltetraphenyl ether (provided that the alkyl group contains 6-20 carbon atoms). To the mixture is added, if necessary, a gelling aid composed of an aliphatic alcohol, an aliphatic ketone and/or an aliphatic carbonate ester.
Abstract:
A grease composition is disclosed comprising a base fluid, a thickening agent, overbased calcium alkyl salicylate and overbased magnesium alkyl salicylate.
Abstract:
A light colored, open gear lubricating grease is formed from:a lubricating base oila clay thickenera combination of a polymer, preferably atactic polypropylene, and a particulate mineral, preferably zinc oxide, as tactifier and filler, andand alkali metal borate as EP additive.The ratio of polymer to mineral, may be from 1.5:1 to 1:1.5. An aromatic disulphide, preferably dibenzyl disulphide, may also be present as an EP additive and, if so, the wt. ratio of borate to disulphide may be from 5:1 to 7:1.
Abstract:
Novel grease compositions are described which comprise:(a) A major amount of a shielded polysilicate compound selected from the group consisting of alkoxysilane cluster compounds, alkoxysilanol cluster compounds, alkoxysilane ester compounds, alkoxysilane multiple cluster compounds, silicone-bridged alkoxysilane double cluster compounds, distillation residues containing these compounds and mixtures thereof; and(b) an amount of at least one grease thickener sufficient to thicken said shielded polysilicate compound to a grease consistency.
Abstract:
This invention relates to an aqueous drilling fluid containing a tall oil fraction as a lubricating additive, a method of drilling with said drilling fluid containing said tall oil lubricating additive and the tall oil lubricating additive per se.
Abstract:
The heavy reaction product obtained upon separation, as by distillation, of light reaction products of branched aliphatic dinitriles is useful as rust inhibitor in lubricating oils and greases.
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:
Metal working operations, especially drawing, are facilitated by applying to the metal a composition which provides lubricity thereto and which melts within the range of about 30.degree.-100.degree. C. The composition comprises at least one neutral ester, and preferably a mixture of esters, prepared from polyalkylene glycols and saturated aliphatic alcohols having at least about 10 carbon atoms, and C.sub.12 -.sub.25 aliphatic monocarboxylic acids and C.sub.4 -.sub.20 aliphatic polycarboxylic acids. The preferred ester mixtures are prepared from polyethylene glycols, C.sub.14 -.sub.20 predominantly straight chain alkanols, stearic acid and adipic, azelaic or sebacic acid. Optional ingredients include phosphorus acid salts and anti-oxidants. The composition may be applied in liquid form and solidifies on cooling to normal ambient and storage temperatures.
Abstract:
A process for preparing polymer oils comprising polymerizing 1,3-pentadiene together with or without at least one other olefin copolymerizable therewith in a homogenizable Friedel Crafts type catalyst to produce a liquid polymer having a number average molecular weight of 300 - 1,000 wherein at least 70 percent of the pentadiene units is of trans structure and then hydrogenating said liquid polymer to the extent that its iodine number is decreased to not more than 60; the polymer oils; and compositions containing the polymer oil as the base material.