Exxon Research and Engineering Company

David A Slack

A Gordon Alexander

Terrance O Brown

Lyle Edwin Moran

David Leslie Andrew

A grease of enhanced thermal stability and improved soap utilization comprises a major amount of a base oil comprising polyalphaolefin, alkyl aromatic synthetic fluid and white oil and a minor amount of soap thickener.

Grease composition containing pao, alkylaromatic synthetic fluid and white oil for industrial bearings

A grease composition comprises an effective amount of a lubricating oil containing an imide or pyrrolidone thickening agent or an imide or pyrrolidone thickening agent comprising a metal salt of a carboxylic acid in combination with a bimetal phthalate complexing agent, such as dilithium terephthalate. The presence of the complexing agent results in a grease having properties superior to that of a similar grease without the complexing agent. Preferred complexing agents are dimetal terephthalates in which the metal is an alkali or alkaline earth metal and is the same metal as is present in the thickener. An example is a combination of a calcium or lithium salt of the reaction product of trimellitic anhydride with a hydrogenated rapeseed amine and a dilithium terephthalate complexing agent.

Imide and pyrrolidone grease thickeners with terephthalate complexing

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

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Sarnia, Canada

David A Slack