# US 10,767,125 B2 · Group III base stocks and lubricant compositions

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- Number: US 10,767,125 B2
- Document ID: US10767125B2
- Status: Granted
- Kind: B2
- Application number: 16/540,123
- Filed: 2019-08-14
- Published: 2019-12-05
- Granted: 2020-09-08
- Earliest claimed: 2017-12-21
- Assignees: ExxonMoble Research and Engineering Company
- Applicants: ExxonMobil Research and Engineering Company
- Inventors: Daniel J. Eichelsdoerfer; Richard C. Dougherty; Charles L. Baker, Jr.; Debra A. Sysyn
- Web page: https://patentgrep.com/patent/US10767125B2

## CPC

- C10G 69/02: plural serial stages only
- C10G 45/00: Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds
- C10G 45/08: in combination with chromium, molybdenum, or tungsten metals, or compounds thereof
- C10G 45/62: containing platinum group metals or compounds thereof
- C10G 45/64: containing crystalline alumino-silicates, e.g. molecular sieves
- C10G 47/12: Inorganic carriers
- C10G 47/18: the catalyst containing platinum group metals or compounds thereof
- C10G 65/12: including cracking steps and other hydrotreatment steps
- C10M 101/02: Petroleum fractions
- C10M 171/02: Specified values of viscosity or viscosity index
- C10G 2300/1062: Lubricating oils
- C10G 2300/1074: Vacuum distillates
- C10G 2300/302: Viscosity
- C10G 2300/70: Catalyst aspects
- C10G 2400/02: Gasoline
- C10G 2400/04: Diesel oil
- C10G 2400/06: Gasoil
- C10G 2400/08: Jet fuel
- C10G 2400/10: Lubricating oil
- C10M 2203/1025: used as base material
- C10M 2203/1065: used as base material
- C10N 2020/02: Viscosity; Viscosity index
- C10N 2020/065: {Saturated Compounds}
- C10N 2030/02: Pour-point; Viscosity index
- C10N 2030/10: Inhibition of oxidation, e.g. anti-oxidants
- C10N 2040/04: Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
- C10N 2040/08: Hydraulic fluids, e.g. brake-fluids
- C10N 2040/10: Running-in-oil {; Grinding}
- C10N 2040/20: Metal working
- C10N 2040/252: {Diesel engines}
- C10N 2040/30: Refrigerators lubricants {or compressors lubricants}
- C10N 2050/10: semi-solid; greasy
- C10G: CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION (cracking to hydrogen or synthesis gas C01B; cracking or pyrolysis of hydrocarbon gases to individual hydrocarbons or mixtures thereof of definite or specified constitution C07C; cracking to cokes C10B); RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10M: LUBRICATING COMPOSITIONS (well drilling compositions C09K8/02); USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION (mould release, i.e. separating, agents for metals B22C3/00, for plastics or substances in a plastic state, in general B29C33/56, for glass C03B40/02; textile lubricating compositions D06M11/00, D06M13/00, D06M15/00; immersion oils for microscopy G02B21/33)
- C10N: INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS

## Abstract

Disclosed are Group III base stocks comprising greater than or equal to about 90 wt. % saturated hydrocarbons (saturates); a viscosity index from 120 to 145; a unique ratio of molecules with multi-ring naphthenes to single ring naphthenes (2R+N/1RN); a unique ratio of branched carbons to straight chain carbons (BC/SC); a unique ratio of branched carbons to terminal carbons (BC/TC); and unique MRV behavior as a function of base stock naphthene ratio (2R+N/1RN). A method for preparing the base stocks is also disclosed. Also disclosed is a lubricating oil having the base stock as a major component, and an additive as a minor component.

## Claims

### Claim 1

A Group III base stock comprising;
at least 90 wt. % saturated hydrocarbons:
kinematic viscosity at 100° C. of 4.0 cSt to 5.0 cSt;
a viscosity index of 120 to 140;
a ratio of multi-ring naphthenes to single ring naphthenes (2R+N/1RN) of less than 0.52; and
a ratio of branched carbons to straight chain carbons (BC/SC) less than or equal to 0.21.

### Claim 2 (depends on 1)

The base stock of claim 1 having a ratio of branched chain carbons to terminal carbons (BC/TC) less than or equal to 2.3.

### Claim 3 (depends on 1)

The base stock of claim 1, wherein the kinematic viscosity at 100° C. of from 4.0 cSt up to 4.7 cSt.

### Claim 4

A Group III base stock comprising:
at least 90 wt. % saturated hydrocarbons;
kinematic viscosity at 100° C. of 5.0 cSt to 12.0 cSt;
a viscosity index of 120 to 140;
a ratio of multi-ring naphthenes to single ring naphthenes (2R+N/1RN) of less than 0.59; and
a ratio of branched carbons to straight chain carbons (BC/SC) less than or equal to 0.216.

### Claim 5 (depends on 4)

The base stock of claim 4, wherein the base stock has a ratio of branched chain carbons to terminal carbons (BC/TC) less than or equal to 2.3.

### Claim 6 (depends on 4)

The base stock of claim 4, wherein the kinematic viscosity at 100° C. is from 5.5 cSt to 7.0 cSt.

### Claim 7 (depends on 5)

The base stock of claim 5, wherein the kinematic viscosity at 100° C. is from 5.5 cSt to 7.0 cSt.