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Vegetable oil lubricant comprising all-hydroprocessed synthetic oils

a technology of synthetic oils and vegetable oils, applied in the field of vegetable oil based lubricants, can solve the problems of lubricants stressing an ecosystem, failing to teach or suggest the advantages associated with such formulations, and reducing etc., to achieve the effects of reducing the risk of contamination, and improving the performance of lubricants

Inactive Publication Date: 2005-03-17
RENEWABLE LUBRICANTS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention is directed to vegetable oil based lubricants using all-hydroprocessed synthetic based oils. The lubricants are shown to provide enhanced properties including viscosity index, pour point, low temperature pumpability, low volatility, oxidation stability, electrical insulating value, and microbial biodegradability.
The lubricants are characterized as having enhanced microbial biodegradability making them environmentally friendly. Surprisingly, some compositions can have an all-hydroprocessed based oil content greater than about 60% and pass ultimate biodegradability test method ASTM D-5864 Pw1. Ultimate biodegradability Pw1 is the fastest and most complete type of biodegradation as defined by ASTM D-5864. Furthermore, the inventive compositions have excellent rheological properties and a super high viscosity index of about 120 to 200, making them particularly useful as hydraulic oils, transmission fluids, engine oils, gear oil, rock drill oil, circulating oils, drip oils, spindle oils, compressor oils, grease base oils, corrosion inhibitor oils, heat transfer oils, cable oils, chain oils, general purpose oils, metal working oils, and electrical insulating oils.

Problems solved by technology

Group I oils contain high levels of sulfur and aromatics, which are compounds that can diminish performance.
The references do not disclose enabling lubricant formulations containing a combination of vegetable oil and hydroprocessed base oils (group III) and thus fail to teach or suggest the advantages associated with such formulations.
For example, biodegradable resistant lubricants can stress an ecosystem when improperly discarded or accidentally discharged into the environment.

Method used

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  • Vegetable oil lubricant comprising all-hydroprocessed synthetic oils
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Embodiment Construction

The compositions of the present invention comprise at least one vegetable oil selected from the group comprising: natural vegetable oil, synthetic vegetable oil, genetically modified vegetable oil, and mixtures thereof. In one embodiment of the invention, the vegetable oils include safflower, canola, peanut, corn, rapeseed, sunflower, cottonseed, lesquerella, palm, castor, meadow foam, and soybean. Suitable vegetable oils are further described in U.S. Pat. No. 6,534,454 B1, incorporated herein by reference. In another embodiment of the present invention, the vegetable oils are high oleic sunflower and high oleic canola, primarily because of availability. In one embodiment of the present invention, the vegetable oil is present in the composition in a range of from about 10 percent to about 90 percent, in another embodiment the vegetable oil is from about 30 percent to about 70 percent, and in another embodiment, the vegetable oil is from about 40 percent to about 60 percent. A veget...

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Abstract

The present invention discloses vegetable oil based compositions having an effective combination of properties including lubricity, rheology, electrical insulating value and microbial biodegradability making them particularly useful for the proper functioning of mechanical devices.

Description

BACKGROUND OF THE INVENTION This application claims priority to a provisional application Ser. No. 60 / 502,669, filed Sep. 12, 2003. The present invention is directed to lubricant compositions. Specifically, it relates to vegetable oil based lubricants that comprise synthetic oils made by all-hydroprocessing routes. More specifically, it relates to lubricants that provide enhanced properties including viscosity index, pour points, low temperature pumpability, low volatility, oxidation stability, electrical insulating value, the ability to formulate different viscosities, and microbial biodegradability. It is generally known that vegetable oil based lubricants can be formed using additives including the non-lube portion of natural vacuum gas oil feedstock. Historically, base oil manufacturers have often used traditional chemical-solvent refining processes to remove the undesirable non-lube molecules from the gas oil portion of the crude oil. Such refining is considered a subtractio...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C10M169/04
CPCC10M111/02C10N2240/08C10M2203/1006C10M2205/026C10M2207/026C10M2207/401C10M2207/4045C10M2209/084C10M2215/064C10M2215/08C10M2215/223C10M2215/224C10M2223/043C10N2230/64C10M169/04C10N2030/64C10N2040/08C10M169/00
Inventor GARMIER, WILLIAM W.
Owner RENEWABLE LUBRICANTS INC
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