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Phthalate ester as metal working lubricant

a technology of phthalate ester and metal working, which is applied in the direction of lubricant composition, liquid carbonaceous fuel, petroleum industry, etc., can solve the problems of adipate esters and less desirable, and achieve the effect of superior hydrolytic stability and successful lubrication results

Inactive Publication Date: 2007-08-09
FAUNCE JAMESA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0005] The present invention provides a hydrolytically stable phthalate ester lubricant and a method of metalworking with a hydrolytically stable phthalate ester lubricant. The phthalate esters used in the present invention have shown superior hydrolytic stability versus other esters and have shown successful lubrication results in ASTM testing for lubricants.

Problems solved by technology

Adipate esters, however, are unstable in water solutions and thus less desirable than water-based lubricants.

Method used

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  • Phthalate ester as metal working lubricant
  • Phthalate ester as metal working lubricant
  • Phthalate ester as metal working lubricant

Examples

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Embodiment Construction

[0011] The phthalate esters that may be used in the lubricant of the present invention include (I) a phthalate polyester-ether polyol, (II) a phthalic anhydride reacted with an equivalent of a fatty alcohol which is then ethoxylated with a variety of moles of ethylene oxide (or propylene oxide), and (IV) the amine-neutralized salts of item (II).

[0012] Referring to (I), the phthalate polyester-ether polyol is the reaction product of: [0013] (1) about 2-60% based on the weight of the polyester-ether polyol of phthalic anhydride or phthalic acid; [0014] (2) about 40-98% based on the weight of the polyester-ether polyol of at least one polyol of the formula:

HO—R1—OH

[0015] wherein R1 represents: [0016] (a) alkylene groups of about 2 to 10 carbon atoms; [0017] (b) —CH2—R2—CH2—[0018] where R2 represents: [0019] (c) —(R3O)n—R3—[0020] where each R3 independently is an alkylene group of about 2 to about 4 carbon atoms, and n is an integer of from about 1-200; and [0021] (3) about 10-80% bas...

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Abstract

A water-based lubricant is provided that includes a phthalate ester in an amount of about 2% to about 20% based on the weight of the final composition and water in an amount of about 60% to about 93% based on the weight of the final composition. Also provided are a method of making the water-based lubricant and a method of metalworking using the water-based lubricant.

Description

RELATED APPLICATIONS [0001] [Not Applicable]FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT [0002] [Not Applicable]MICROFICHE / COPYRIGHT REFERENCE [0003] [Not Applicable]BACKGROUND OF THE INVENTION [0004] The metalworking industry requires lubricants in many of its operations. Water-based lubricants are particularly desirable because of the ease of using and disposing of the water base. Adipate esters have also been used as successful lubricants in the metalworking industry. Adipate esters, however, are unstable in water solutions and thus less desirable than water-based lubricants. In the past, it has been determined that esters having groups with steric bulk immediately adjacent the ester group may lend some hydrolytic stability to lubricants. The metalworking industry has gone to utilizing isopropyl and 2-ethylhexyl esters as a source of hydrolytic stability due to the steric bulk of the groups adjacent to the ester linkage. However, there continues to be a need for hydrolytically sta...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C10L1/10C10M173/02
CPCC10M173/02C10M2201/003C10N2240/40C10M2201/02C10M2207/142C10M2207/285C10M2207/289C10M2209/102C10M2209/104C10M2209/106C10M2209/108C10M2209/109C10M2209/112C10M2215/042C10N2230/06C10N2230/66C10M2207/022C10N2030/06C10N2030/66C10N2040/20
Inventor FAUNCE, JAMESA
Owner FAUNCE JAMESA