Exxon Research and Engineering Company

Imperial Oil Limited

A Gordon Alexander

Terrance O Brown

Keith Coupland

Phillip W Brewster

David A Slack

Lyle Edwin Moran

Clinton R Smith

Alan Gary Blahey

James H Norton

Harry E Henderson

Donald W Murray

William Nywening

A high dropping point lithium complex soap grease is prepared by dissolving a monocarboxylic fatty acid and a dicarboxylic acid together in oil at a temperature above the boiling point of water and then neutralizing the resulting oil-acid mixture by adding a concentrated aqueous solution of lithium hydroxide monohydrate.

Method of preparing high dropping point lithium complex soap greases

Solvent-free lubricant compositions having improved lubricity properties comprising a basestock having a kinematic viscosity of about 1.5 to 3.0 cSt at 100.degree. C., about 3 to 15 wt % of bright stock having a kinematic viscosity about 20 to 40 cSt at 100.degree. C., about 3 to 15 wt % of a polyisobutylene having a number average molecular weight of about 400 to 1050 and about 3 to 15 wt % of a polyisobutylene having a number average molecular weight of about 1150 to 1650. Minor amounts of the lubricant composition may be incorporated into a distillate fuel to provide a lubricant oil-fuel composition for two-cycle engines.

Lubricating composition for two-cycle internal combustion engines

A lubricating composition having improved high and low temperature properties is disclosed. More specifically, the addition of a certain ethylene copolymers having a Melt Index of at least about 40 g/10 mins. to a mixture comprising (1) a lubricating oil, (2) a thickener, and (3) a VI improver results in a lubricating composition which has both excellent high temperature adhesiveness and low temperature slumpability.

Grease composition containing an ethylene copolymer having a melt index

A method for improving the shear stability of a multipurpose grease containing

Method of improving the shear stability of lithium soap greases

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.

Load-carrying grease

A method for manufacturing a lubricating grease having improved properties is described. The method comprises reacting a pyrrolidone with a fatty amine and subsequently adding a metal hydroxide to the reaction when the unreacted fatty amine content ranges between about 33 and about 66 wt. % of the fatty amine originally added. The grease thus formed will be a NLGI #0 grade grease that has the high temperature stay-in-place properties of a NGLI #2 grade grease.

Method of manufacturing an improved multi-grade lubricating grease

The present invention is directed at a grease composition comprising:

Grease composition

A process for continuously manufacturing a lubricating grease using a screw process unit comprising:

Process for continuously manufacturing lubricating grease

A traction fluid having a lubricant basestock comprising hydrogenated coal tar containing a saturated fraction having a major portion made up of multiring components of at least three rings and an aromatic fraction which comprises at least 12% by weight of said fluid and contains at least 50% by volume of multiring components.

Traction fluid lubricants derived from coal tar

A grease composition having excellent high temperature and multipurpose properties comprising a lubricating oil and an effective amount of a thickener which is a selected pyrrolidone compound.

Lubricating grease composition containing pyrrolidone derivative as

A high temperature grease composition with excellent oxidation stability comprises a major proportion of a lubricating oil, a thickener system which includes a lithium soap of a C.sub.12 to C.sub.24 hydroxy fatty acid and an antioxidant system which comprises an alkali metal salt of hydroxy benzoic acid and a selected dioxime compound.

Growing community of inventors

Sarnia, Canada

A Gordon Alexander