Witco Corporation

Exxonmobil Research and Engineering Company

Witco Chemical Corporation

Southwest Petro-chem, Inc.

Jon C Root

John F Barnes

Ray D Lawson

Mark W Baum

Todd Timothy Nadasdi

Walter Leslie

Dennis M Rosson

Mark Baum

Jack E Coovert

Walter Logan Leslie

Andrew L Johnson, Iii

A grease composition having low noise characteristics is prepared by shearing a mixture of a base oil and a thickener for a time sufficient to reduce substantially all of the thickener to particles below 500 microns in size; and then processing the sheared mixture to a grease.

Lubricating grease composition and preparation

A silicon elastomer compatible constant velocity joint grease comprises a urea grease composed of a lubricating oil and a urea thickener and an effective amount of a friction reducing additive package comprising vermiculite, molybdenum oxysulfide dithiocarbamate, polyphenylene sulfide and potassium triborate. The additive package solids have particle sizes below about 40 microns.

Low friction grease for constant velocity universal joints, particularly plunging type joints that is compatible with silicone elastomer boots

A fibrous grease comprising a base oil and a fibrous diurea thickener comprising the reaction product of toluene diisocyanate, a fatty aliphatic amine and an alkylphenyl amine.

Fibrous polyurea grease

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.

Lubricant compositions

Lubricant compositions adapted for use under extreme pressure, high temperature and high speed conditions comprising a major proportion of an oil or grease base material, having a dropping point above about 300.degree. F., and a minor proportion of an additive system containing as an essential component an inorganic phosphate salt, or mixture thereof, in solid form. Preferred salts are alkaline earth metal ortho- or pyrophosphates exemplified by dicalcium phosphate.

A lubricant composition having special utility as a lubricant in constant velocity universal joints of the type used in front wheel drive vehicles. The composition comprises a low sulfur lubricating oil base grease and an additive package comprising a mixture of an oil soluble, sulfur-free organic compound and an oil insoluble sulfur-free inorganic compound.

Lubricant compositions comprising a phosphate additive system

Lubricant compositions adapted for use in lubricating traction motor gears comprising a major proportion of a base oil such as a mineral oil, and a minor proportion of an oil soluble polymer such as a polyisobutylene.

Lubricant compositions adapted for use under extreme pressure conditions comprising a major proportion of a lubricating grease, and a minor proportion of an additive consisting essentially of a solid, oil insoluble arylene sulfide polymer, and a metal salt, particularly an alkali metal or alkaline earth metal salt, particularly an alkali metal or alkaline earth metal salt of a phosphorus acid, for example, mono- or dicalcium phosphate, or an alkali metal or alkaline earth metal carbonate exemplified by calcium carbonate, or a mixture of such a phosphate salt and carbonate.

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Leawood, KS, United States of America

Jon C Root