Nanoparticle compositions and greaseless coatings for equipment

• US 9,868,920 B2
• Filed: 08/03/2015
• Issued: 01/16/2018
• Est. Priority Date: 01/12/2006
• Status: Active Grant

• Current Assignee: P&S Global Holdings, LLC
• Original Assignee: The Board of Trustees of the University of Arkansas (University of Arkansas System)
• Inventors: Malshe, Ajay P.
• Primary Examiner(s): HINES, LATOSHA D
• Application Number:
  US14/816,546
• Publication Number:
  US 20150361375A1
• Time in Patent Office: 897 Days
• CPC Class Codes: B05D 3/007 After-treatment
• CPC Class Codes: C09D 7/61 inorganic
• CPC Class Codes: C10M 125/22 Compounds containing sulfur, selenium or tellurium
• CPC Class Codes: C10M 169/04 Mixtures of base-materials and additives
• CPC Class Codes: C10M 169/042 the additives being compounds of unknown or incompletely defined constitution only
• CPC Class Codes: C10M 171/06 Particles of special shape or size
• CPC Class Codes: C10M 177/00 Special methods of preparation of lubricating compositions; Chemical modification by after-treatment of components or of the whole of a lubricating composition, not covered by other classes
• CPC Class Codes: C10M 2201/04 Elements
• CPC Class Codes: C10M 2201/041 Carbon; Graphite; Carbon black
• CPC Class Codes: C10M 2201/042 halogenated, i.e. graphite fluoride
• CPC Class Codes: C10M 2201/06 Metal compounds
• CPC Class Codes: C10M 2201/061 Carbides; Hydrides; Nitrides
• CPC Class Codes: C10M 2201/062 Oxides; Hydroxides; Carbonates or bicarbonates
• CPC Class Codes: C10M 2201/065 Sulfides; Selenides; Tellurides
• CPC Class Codes: C10M 2201/066 Molybdenum sulfide
• CPC Class Codes: C10M 2201/0663 used as base material
• CPC Class Codes: C10M 2201/081 containing halogen
• CPC Class Codes: C10M 2201/082 containing nitrogen
• CPC Class Codes: C10M 2201/084 containing sulfur, selenium or tellurium
• CPC Class Codes: C10M 2201/087 Boron oxides, acids or salts
• CPC Class Codes: C10M 2201/103 : Clays; Mica; Zeolites
• CPC Class Codes: C10M 2203/0206 : used as base material
• CPC Class Codes: C10M 2203/1006 : used as base material
• CPC Class Codes: C10M 2203/1025 : used as base material
• CPC Class Codes: C10M 2205/163 : used as base material
• CPC Class Codes: C10M 2207/0406 : used as base material
• CPC Class Codes: C10M 2207/1285 : used as thickening agents
• CPC Class Codes: C10M 2207/2815 : used as base material
• CPC Class Codes: C10M 2207/2835 : used as base material
• CPC Class Codes: C10M 2207/2895 : used as base material
• CPC Class Codes: C10M 2207/401 : used as base material
• CPC Class Codes: C10M 2213/046 : used as thickening agents
• CPC Class Codes: C10M 2213/062 : Polytetrafluoroethylene [PTFE]
• CPC Class Codes: C10M 2215/0813 : used as thickening agents
• CPC Class Codes: C10M 2223/10 : Phosphatides, e.g. lecithin, cephalin
• CPC Class Codes: C10M 2223/103 : used as base material
• CPC Class Codes: C10M 2229/025 : used as base material
• CPC Class Codes: C10N 2010/04 : Groups 2 or 12
• CPC Class Codes: C10N 2010/06 : Groups 3 or 13
• CPC Class Codes: C10N 2010/08 : Groups 4 or 14
• CPC Class Codes: C10N 2010/14 : Group 7
• CPC Class Codes: C10N 2020/06 : Particles of special shape or size
• CPC Class Codes: C10N 2030/06 : Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
• CPC Class Codes: C10N 2030/56 : Boundary lubrication or thin film lubrication
• CPC Class Codes: C10N 2050/023 : Multi-layer lubricant coatings
• CPC Class Codes: C10N 2050/10 : Semi-solids; greasy
• CPC Class Codes: C10N 2070/00 : Specific manufacturing methods for lubricant compositions
• CPC Class Codes: Y10T 428/2982 : Particulate matter [e.g., sphere, flake, etc.]

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.

Claims

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.