Texaco Inc.

Edward C Brink, Jr

Betty J Morris-Sherwood

David R McCoy

Edward E McEntire

Ralph P Chesluk

James R Whiteman

Howard J Platte

Clifton C Henderson

Henry K Sowers

A method of making a methyl methacrylate-lauryl methacrylate copolymer for use as a non-dispersant, shear stabilizing, wear inhibiting and VI-improving additive in hydraulic fluids and lubricating oils comprises:

Non-dispersant, shear-stabilizing, and wear-inhibiting viscosity index

A composition which is noncorroding to metals in contact therewith includes water, an alkylene glycol and/or a polyoxyalkylene glycol, a polyoxyalkylene amine and substantially no inorganic nitrite. The polyoxyalkylene amine replaces the previously used inorganic nitrite to reduce the toxicity of the noncorroding composition.

Corrosion inhibiting composition and method

A water base hydraulic fluid is disclosed. The fluid comprises 40 wt % of an amphoteric surfactant of the formula:

Water base hydraulic fluid

Refrigeration oils are prepared by subjecting a crude lubricating oil fraction to mild hydrogenation, acid treating, dewaxing and clay percolation.

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Port Arthur, TX, United States of America

Edward C Brink, Jr