Nanoparticle compositions and greaseless coatings for equipment

Patent metadata

Field	Value
Publication number	US-9868920-B2
Application number	US-201514816546-A
Country	US
Kind code	B2
Filing date	Aug 3, 2015
Priority date	Jan 12, 2006
Publication date	Jan 16, 2018
Grant date	Jan 16, 2018

Abstract

Nanoparticle compositions and greaseless coatings are disclosed, including, for example, a greaseless lubricant nanoparticle coating on drill pipe threads. The lubricant coating may be multifunctional, including, for example, anti-corrosives. The coating may be a spray, or otherwise.

First claim

What is claimed is:

1. A lubricant nanoparticle coating composition comprising a multifunctional additive macromolecule comprising:
a plurality of lubricant nanoparticles having an open-ended architecture; and
an organic medium intercalated in the nanoparticles;
wherein at least a portion of the nanoparticles have an average particle dimension of less than or equal to about 500 nm; and
wherein the coating composition is greaseless.

2. The coating composition of claim 1 , wherein the coating composition is in contact with a mating surface of an object.

3. The coating composition of claim 2 , wherein the object is one of machinery or equipment.

4. The coating composition of claim 1 , wherein the organic medium comprises an alcohol.

5. The coating composition of claim 1 , wherein the coating composition further comprises at least one material from the group consisting of: an anti-corrosive, a torque modifier, an anti-oxidant, a lubricant, an emulsifier, and a dispersant.

6. The coating composition of claim 1 , wherein the coating composition further comprises a base.

7. The coating composition of claim 6 , wherein the base comprises one or more of an oil, a plastic, a polymer, a gel, a spray, a plasticizer, a hydrocarbon oil, a vegetable oil, a corn oil, a peanut oil, a canola oil, a soybean oil, a mineral oil, a paraffin oil, a synthetic oil, a petroleum gel, a hydrocarbon gel, an ethylenebistearamide, a wax, and a silicone.

8. The coating composition of claim 1 , wherein the coating composition further comprises an emulsifier.

9. The coating composition of claim 1 , wherein the coating composition further comprises a biocidal.

10. The coating composition of claim 1 , wherein the coating composition further comprises a plurality of sub-micron particles and micro particles.

11. A lubricant nanoparticle coating comprising a multifunctional additive macromolecule comprising:
a plurality of lubricant nanoparticles having an open-ended architecture; and
an organic medium intercalated in the nanoparticles;
wherein at least a portion of the nanoparticles have an average particle dimension of less than or equal to about 500 nm; and
wherein the coating is a greaseless coating in contact with at least a portion of a surface of an object.

12. A method comprising:
applying a greaseless coating to at least a portion of a surface of an object, the coating comprising a multifunctional additive macromolecule comprising:
a plurality of lubricant nanoparticles having an open-ended architecture; and
an organic medium intercalated in the nanoparticles; and
wherein at least a portion of the nanoparticles have an average particle dimension of less than or equal to about 500 nm.

13. The method of claim 12 , wherein applying the coating to at least a portion of the surface of the object comprises applying the coating to a mating surface of the object.

14. The method of claim 13 , wherein the object is one of machinery or equipment.

15. The method of claim 12 , wherein the organic medium comprises an alcohol.

16. The method of claim 12 , wherein the coating further comprises an anti-corrosion material.

17. The method of claim 12 , wherein the coating further comprises a base.

18. The method of claim 17 , wherein the base comprises one or more of an oil, a plastic, a polymer, a gel, a spray, a plasticizer, a hydrocarbon oil, a vegetable oil, a corn oil, a peanut oil, a canola oil, a soybean oil, a mineral oil, a paraffin oil, a synthetic oil, a petroleum gel, a hydrocarbon gel, an ethylenebistearamide, a wax, and a silicone.

19. The method of claim 12 , wherein the coating further comprises an emulsifier.

20. The method of claim 12 , wherein the coating further comprises a biocidal.

21. The method of claim 12 , wherein applying the coating to at least a portion of the surface of the object comprises spraying the coating onto at least a portion of the surface of the object.

22. A method comprising:
applying a coating composition to at least a portion of a surface of an object, the coating composition comprising a multifunctional additive macromolecule comprising:
a plurality of lubricant nanoparticles having an open-ended architecture; and
an organic medium intercalated in the nanoparticles;
wherein at least a portion of the nanoparticles have an average particle dimension of less than or equal to about 500 nm; and
wherein the coating composition is greaseless.

Assignees

• Univ Arkansas

Inventors

• Malshe Ajay P

Classifications

• C10M2223/103

  used as base material · CPC title

• C10M2201/04

  Elements · CPC title

• C10N2030/06

  Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure · CPC title

• C10M125/22

  Compounds containing sulfur, selenium or tellurium · CPC title

• C10M169/04 Primary

  Mixtures of base-materials and additives · CPC title