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

[0011]In another aspect, there is provided a method save energy while operating compressors, the method comprising using a compressor lubricant composition having excellent oxidation stability, the composition containing: (i) 50 to 99.999 weight percent of an isomerized base oil; and (ii) 0.001-20 weight percent of at least an additive package, 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. The energy saving is at least 1% over the use of compressor lubricants without the isomerized base oil.

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.