Compressor Lubricant Compositions and Preparation Thereof

Abstract

A compressor lubricant composition providing energy savings and exhibiting excellent oxidation stability is provided. The composition comprises (i) 80 to 99.999 weight percent of an isomerized base oil; and (ii) 0.001-20 weight percent of at least an additive selected from an additive package, oxidation inhibitors, pour point depressants, metal deactivators, metal passivators, anti-foaming agents, friction modifiers, anti-wear agents, and mixtures thereof; wherein the isomerized base oil has consecutive numbers of carbon atoms, less than 0.05 wt. % aromatics, a ratio of molecules with monocycloparaffinic functionality to molecules with multicyloparaffinic functionality greater than 2. In one embodiment, compressors employing the lubricant composition with isomerized base oil consumes at least 1% less power than compressors employing the lubricant compositions of the prior art.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application claims benefit under 35 USC 119 of Provisional Application 61 / 015114 filed Dec. 19, 2007. This application claims priority to and benefits from the foregoing, the disclosure of which is incorporated herein by reference.CROSS REFERENCE TO RELATED APPLICATIONS[0002]NONETECHNICAL FIELD[0003]The invention relates generally to compressor lubricant compositions, and in one embodiment, compressor lubricant compositions providing energy savings.BACKGROUND[0004]Approximately 70% of all manufacturers have a compressed air system. These systems power and regulate a variety of equipment, including machine tools, machine handling and separation equipment, spray painting equipment, HVAC systems, etch. They are also used to dry or clean various items in industrial facilities.[0005]Compressed air is one of the most expensive uses of energy in a manufacturing plant. About eight horsepower of electricity is used to generate one horsepower ...

AI Technical Summary

Benefits of technology

[0008]There is a still a need for improved compressor lubricants, particularly a compressor lubricant resulting in reduced energy consumption while offering desired performance and physical properties such as long life, oxidation stability, low volatility, and anti-wear properties. There is also a need for an improved compressor lubricant using clean alternative hydrocarbon products such as Fischer Tropsch products.

Problems solved by technology

Compressed air is one of the most expensive uses of energy in a manufacturing plant.

Another energy suggestion relates to compressor lubricants, i.e., “synthetic compressor oils save at least 2% energy in compressors compared to the traditional mineral oils” (http: / / www.oks-india.com / user / questionanswer.asp) While synthetic lubricants are an improvement over mineral oils in terms of energy saving, they are often not capable of delivering all of the desired performance and physical properties.