IP Library Granted Patent US 12,258,535
Granted Patent B2
US 12,258,535 · App. 16/146,570 · Granted Mar 25, 2025

Emulsions having oil phase surfactants and water phase additive blends

Inventor: Robert E. Golden (Wyoming, OH)
Assignee: Pilot Chemical Corp.
C10M173/00C10M133/08C10M133/16C10M135/10C10M141/08C10M2201/02C10M2201/083C10M2203/003C10M2207/022C10M2207/126C10M2207/127C10M2207/282C10M2215/04C10M2215/042C10M2215/082C10M2215/26C10M2215/28C10M2219/042C10M2219/044C10M2223/04C10M2227/061C10N2030/06C10N2030/12C10N2030/16C10N2030/24C10N2040/20C10N2050/011
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Quick Facts
Patent No.
US 12,258,535
App. No.
16/146,570
Granted
Mar 25, 2025
Kind
B2
Abstract

Emulsions including an additized oil phase and a water phase additive blend are disclosed. The components of the additized oil phase and the water phase additive blend do not interact. The emulsions are useful as metalworking fluids. Methods of making and using the emulsions are also disclosed.

Claims (41)

1. An emulsion comprising:

an additized oil phase comprising oil and one or more oil phase surfactants; and

a water phase additive blend comprising one or more water phase components, the water phase components comprising:

a surfactant;

a corrosion resistance agent;

a lubricity agent; and

a biological regulating agent.

2. The emulsion of claim 1 , wherein the oil phase components and the water phase components are incompatible in a single phase.

3. The emulsion of claim 1 , wherein the surfactant comprises one or more anionic surfactants, cationic surfactants, betaine-type amphoteric surfactants, and non-ionic surfactants.

4. The emulsion of claim 3 , wherein the anionic surfactant comprises one or more amine, alkali metal, or alkaline earth metal salts of: C6-C24 alkyl diphenyl oxide disulfonates, C8-C24 alkyl ether sulfates, C8-C24 alkyl sulfates, C8-C16 alkyl aromatic sulfonates, C10-C18 olefin sulfonates, C8-C24 carboxylates, C8-C24 phosphate mono and/or di-esters, sulfo-succinate mono or di-esters of C8-C24 linear or branched alcohols, and alcohol ethoxylates.

5. The emulsion of claim 3 , wherein the cationic surfactant comprises one or more quaternary ammonium surfactants; and

wherein the biological regulating agent comprises the cationic surfactant.

6. The emulsion of claim 1 , wherein the corrosion resistance agent comprises one or more of an amine carboxylate, amine or alkali metal salts of decyl dicarboxylic acid, amine or alkali metal salts of undecyl dicarboxylic acid, amine or alkali metal salts of azelic acid, amine borate esters, amine or alkali metal succinate esters, sodium nitrite, and ethoxylated amines.

7. The emulsion of claim 1 , wherein the lubricity agent comprises one or more of C8-C20 alkyl amides or alkanolamides, cocamide di-isopropanol amide (“DIPA”), cocamide diethanolamide, C8-C24 alkyl phosphate esters, C8-C20 linear or branched carboxylates polyol esters, and carboxylate esters.

8. The emulsion of claim 1 , wherein the water phase components comprise anionic surfactants and cationic surfactants; and

wherein the anionic surfactants and cationic surfactants are included in a molar ratio of about 1 to about 10, or more cationic surfactant to anionic surfactant.

9. The emulsion of claim 1 , wherein the water phase components comprise an alkyl diphenyl oxide disulfonate.

10. The emulsion of claim 1 , wherein the water phase components comprise anionic surfactants and the emulsion passes the Visual Hard Water Cassia Emulsion Stability Test at concentrations of about 1,000 parts-per-million (“ppm”) or more, multivalent cations.

11. The emulsion of claim 1 , wherein the water phase components comprise an anionic surfactant and the corrosion resistance agent and wherein the emulsion passes the Cast Iron Chip Test.

12. The emulsion of claim 11 , wherein the additized oil phase is substantially free of amines and amides.

13. The emulsion of claim 1 , wherein the water phase components comprise an anionic surfactant and the lubricity agent, and

wherein the emulsion exhibits greater efficiency on the Tapping Torque Test than a similar emulsion formed without the water phase components.

14. The emulsion of claim 1 , wherein the water phase components comprise an anionic surfactant and the biological regulating agent; and

wherein the emulsion exhibits a greater reduction of colony forming units (“CFU”) after 24 hours when compared to a similar emulsion formed without the water phase components when tested in accordance to ASTM Practice E2275.

15. The emulsion of claim 1 , wherein the additized oil phase further comprises one or more of a secondary emulsifier, a coupler, an alkalinity agent, an oil-phase corrosion inhibition agent, an oil-phase lubricity agent, and an anti-wear performance additive.

16. The emulsion of claim 1 , wherein the additized oil phase is substantially free of any chelating agents.

17. The emulsion of claim 1 is a metalworking fluid.

18. A method of improving an emulsion comprising:

adding a water phase additive blend to an emulsion comprising water and an additized oil phase; and

wherein the water phase additive blend comprises one or more water phase components, the water phase components comprising:

a surfactant;

a corrosion resistance agent;

a lubricity agent; and

a biological regulating agent.

19. A method of forming emulsion comprising:

adding an additized water phase to an additized oil phase; and

wherein the additized water phase comprises one or more water phase components, the water phase components comprising:

a surfactant;

a corrosion resistance agent;

a lubricity agent; and

a biological regulating agent.

Assignments (2)
SECURITY INTEREST Recorded Mar 2, 2023
From: PILOT CHEMICAL CORP.; PILOT POLYMER TECHNOLOGIES, INC.; LIQUID MINERALS GROUP LTD.
To: U.S. BANK NATIONAL ASSOCIATION, AS ADMINISTRATIVE AGENT
Reel/Frame 062859/0909 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 23, 2018
From: GOLDEN, ROBERT E.
To: PILOT CHEMICAL CORP.
Reel/Frame 047274/0461 →
Continuity (3)
Provisional Application 62641743 · Mar 12, 2018
Provisional Application 62565707 · Sep 29, 2017
Related Publication 20190100715A1 · Apr 4, 2019
References Cited (8)
US 4146499A · Rosano · 1979 [cited by applicant]
US 4149983A · Grier · 1979 [cited by examiner]
US 4781848A · Biresaw et al. · 1988 [cited by applicant]
US 4806256A · Rose · 1989 [cited by examiner]
US 5942216A · Herb et al. · 1999 [cited by applicant]
US 20050245650A1 · Deroo et al. · 2005 [cited by applicant]
US 20090036338A1 · Hee et al. · 2009 [cited by applicant]
Thomas, Shane; International Search Report and Written Opinion of the International Searching Authority, issued in International Application No. PCT/US2018/053491; Nov. 29, 2018; 8 pages. [cited by applicant]