Metal working fluid additive composition

Patent metadata

Field	Value
Publication number	US-11499118-B2
Application number	US-201816754119-A
Country	US
Kind code	B2
Filing date	Oct 4, 2018
Priority date	Oct 6, 2017
Publication date	Nov 15, 2022
Grant date	Nov 15, 2022

Abstract

An industrial fluid additive composition comprises one or more sequestering agents one or more compounds of formula (A): (A) wherein R 1 and R 2 are independently selected from substituted hydrocarbyl moieties containing from 1 to 10 carbon atoms or unsubstituted hydrocarbyl moieties containing from 1 to 10 carbon atoms.

First claim

The invention claimed is:

1. An industrial fluid additive composition comprising:
one or more sequestering agents comprising one or more phosphonate moieties, present in an amount of at least 5% by weight of the composition, and
one or more compounds of formula (A):

present in amounts in the range of from 10% to 50% by weight of the composition;
wherein the compound of formula (A) contains from 5 to 12 carbon atoms;
wherein R 1 and R 2 are independently selected from substituted hydrocarbyl moieties containing from 1 to 5 carbon atoms or unsubstituted hydrocarbyl moieties containing from 1 to 5 carbon atoms; and

wherein the composition does not comprise a biocide.

2. The industrial fluid additive composition according to claim 1 , wherein R 1 and R 2 are independently selected from substituted alkyl moieties containing from 1 to 5 carbon atoms and unsubstituted alkyl moieties containing from 1 to 5 carbon atoms.

3. The industrial fluid additive composition according to claim 1 , wherein R 1 is n-butyl and R 2 is ethyl.

4. The industrial fluid additive composition according to claim 1 , wherein the one or more sequestering agents comprise a compound of formula (B):

wherein R 3 is a substituted hydrocarbyl group containing from 1 to 10 carbon atoms, or an unsubstituted hydrocarbyl group containing from 1 to 10 carbon atoms.

5. The industrial fluid additive composition according to claim 4 , wherein R 3 is a substituted alkyl group comprising one or two phosphonate moieties.

6. The additive composition according to claim 1 , wherein the one or more sequestering agents are selected from 1-hydroxethane 1,1-diphosphonic acid, aminotris(methylenephosphonic acid), or a combination thereof.

7. An industrial fluid additive composition, comprising:
one or more sequestering agents comprising polyacrylates, polyacrylic acids, polylactates, or any combination thereof, present in an amount of at least 5% by weight of the composition, and
one or more compounds of formula (A):

present in amounts in the range of from 10% to 50% by weight of the composition;
wherein the compound of formula (A) contains from 5 to 12 carbon atoms;
wherein R 1 and R 2 are independently selected from substituted hydrocarbyl moieties containing from 1 to 5 carbon atoms or unsubstituted hydrocarbyl moieties containing from 1 to 5 carbon atoms; and

wherein the composition does not comprise a biocide.

8. The industrial fluid additive composition according to claim 1 , wherein at least a fraction of the compound of formula (A) and at least a fraction of the one or more sequestering agents are present in the composition in the form of an ammonium phosphonate salt.

9. The industrial fluid additive composition according to claim 1 , wherein the pH of the composition is from 8 to 10.5.

10. The industrial fluid additive composition according to claim 1 , wherein
the compound of formula (A) is present in the composition in an amount of from 15% to 35% by weight of the composition; and
the one or more sequestering agents are present in an amount of from 5% to 20% by weight of the composition.

11. The industrial fluid additive composition according to claim 10 , wherein the composition further comprises water, present in an amount of from 30% to 60% by weight of the composition.

12. The industrial fluid additive composition according to claim 1 , further comprising one or more surfactants.

13. A metalworking fluid comprising an industrial fluid additive composition according to claim 1 .

14. The metalworking fluid according to claim 13 , wherein the one or more compounds of formula (A) are present in the metalworking fluid in an amount of from 0.1% to 0.35% by weight of the metal working fluid.

15. The metalworking fluid according to claim 13 , wherein the metalworking fluid is in the form of a water-in-oil emulsion or an oil-in-water emulsion.

16. A method of cutting, grinding or cleaning a metal, the method comprising
applying a metalworking fluid according to claim 13 to said metal; and
cutting, grinding or cleaning the metal while the metalworking fluid is in contact with said metal.

17. The metalworking fluid according to claim 13 , wherein the metalworking fluid comprises water and an oil.

18. A method for making a metalworking fluid, comprising providing a metalworking fluid, and adding the industrial fluid additive composition according to claim 1 to the metalworking fluid.

Assignees

• Castrol Ltd

Inventors

• Hardt Thomas Peter

Classifications

• C10M2209/102

  Polyesters · CPC title

• C10N2040/22

  with essential removal of material {, e.g. cutting, grinding or drilling} · CPC title

• C10M2215/044

  having cycloaliphatic groups · CPC title

• C10M2215/086

  Imides [having hydrocarbon substituents containing less than thirty carbon atoms] · CPC title

• C10M2223/063

  Ammonium or amine salts · CPC title