Maleated soybean oil derivatives as additives in metalworking fluids

Patent metadata

Field	Value
Publication number	US-11208612-B2
Application number	US-201816768918-A
Country	US
Kind code	B2
Filing date	Dec 4, 2018
Priority date	Dec 8, 2017
Publication date	Dec 28, 2021
Grant date	Dec 28, 2021

Abstract

Compositions prepared from an adduct of mono-maleated polyunsaturated vegetable oil and an alcohol mixture comprising a hydrophobic alcohol having at least 9 carbon atoms and methoxypolyethylene glycol having a number average molecular weight (Mn) of at least 350. Metalworking fluids comprising less than 3 wt % of a composition that is an adduct of mono-maleated polyunsaturated vegetable oil and an alcohol mixture comprising an alcohol having at least 2 carbon atoms and methoxypolyethylene glycol having a number average molecular weight (Mn) of at least 350. Methods of improving the stability and/or lubricity of a metalworking fluid using a composition that is adduct of mono-maleated polyunsaturated vegetable oil and an alcohol mixture comprising an alcohol having at least 2 carbon atoms and methoxypolyethylene glycol having a number average molecular weight (Mn) of at least 350.

First claim

What is claimed is:

1. A composition prepared from an adduct of mono-maleated polyunsaturated vegetable oil and an alcohol mixture comprising a hydrophobic alcohol comprising at least one linear or branched C 9 to C 11 oxo alcohol, linear or branched C 12 to C 14 fatty alcohol, or combinations thereof and methoxypolyethylene glycol having a number average molecular weight (M n ) of at least 350.

2. The composition of claim 1 , wherein said methoxypolyethylene glycol has a number average molecular weight (M n ) of at least 550.

3. The composition of claim 1 , wherein said mono-maleated polyunsaturated vegetable oil is prepared by mixing maleic anhydride and a polyunsaturated vegetable oil in a molar ratio of maleic anhydride to polyunsaturated vegetable oil of 1:<2.

4. The composition of claim 1 , wherein a molar ratio of said mono-maleated polyunsaturated vegetable oil to said alcohol mixture ranges from 2:1 to 1:2.

5. The composition of claim 1 , wherein the polyunsaturated vegetable oil is soybean oil.

6. The composition of claim 1 , wherein said adduct is salted using an alkali metal base or an amine.

7. The composition of claim 6 , wherein said alkali metal base is a sodium or potassium base.

8. The composition of claim 6 , wherein said amine is a tertiary amine.

9. The composition of claim 8 , wherein said tertiary amine is a tertiary alkanolamine.

10. The composition of claim 9 , wherein said tertiary amine comprises at least one of triethanolamine, N,N-dimethylethanolamine, N-butyldiethanolamine, N,N-diethylethanolamine, or N,N-dibutylethanolamine.

11. The composition of claim 10 , wherein said tertiary amine comprises triethanolamine.

12. An aqueous metalworking fluid comprising the composition of claim 1 .

13. The fluid of claim 12 , wherein said composition is present in an amount of less than 3 wt % based on a total weight of said aqueous metalworking fluid.

14. The fluid of claim 12 , wherein said composition remains dispersed in said aqueous metalworking fluid when said aqueous metalworking fluid has a hardness of at least 400 ppm CaCO 3 , based on a total weight of said aqueous metalworking fluid.

15. A method of lubricating a metal component, said method comprising contacting said metal component with the aqueous metalworking fluid of claim 12 .

16. The method of claim 15 , wherein said metal component is aluminum or steel.

17. A method of improving the stability and/or lubricity of a metalworking fluid, said method comprising adding the composition of claim 1 to said metalworking fluid.

18. The method of claim 17 wherein said composition is present in an amount of less than 3 wt % based on a total weight of said metalworking fluid.

Assignees

• Lubrizol Corp

Inventors

• Mcguiness Mark J
• Hammer Theodore

Classifications

• C10M2209/108

  etherified · CPC title

• C10M2209/104

  of alkylene oxides containing two carbon atoms only · CPC title

• C10M2207/40

  Fatty vegetable or animal oils · CPC title

• C10M2207/021

  having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms · CPC title

• C10N2050/01

  Emulsions, colloids, or micelles · CPC title