Processes for preparing low viscosity lubricants

Patent metadata

Field	Value
Publication number	US-9631158-B2
Application number	US-201414568149-A
Country	US
Kind code	B2
Filing date	Dec 12, 2014
Priority date	Mar 13, 2013
Publication date	Apr 25, 2017
Grant date	Apr 25, 2017

Abstract

Disclosed are processes for forming an oligomer product by contacting a feedstock olefin containing trisubstituted olefins with a solid acid catalyst. The oligomer product can be formed at an oligomerization temperature in a range from −20° C. to 40° C. Polyalphaolefins produced from the oligomer product can have reduced viscosities at low temperatures.

First claim

We claim:

1. A polyalphaolefin comprising at least 80 wt. % C 40 saturated branched hydrocarbons, wherein the polyalphaolefin has a kinematic viscosity at −40° C. in a range from 4,500 to 9,500 cSt.

2. The polyalphaolefin of claim 1 , wherein the polyalphaolefin comprises:
from 82 to 99 wt. % C 40 branched hydrocarbons; and
a maximum of 5 wt. %<C 40 hydrocarbons.

3. The polyalphaolefin of claim 1 , wherein the polyalphaolefin has:
a kinematic viscosity at −40° C. in a range 5,000 to 9,000 cSt;
a kinematic viscosity at 40° C. in a range from 25 to 50 cSt;
a kinematic viscosity at 100° C. in a range from 4 to 10 cSt;
a viscosity index in a range from 120 to 150;
a pour point in a range from −45 to −85° C.; or
any combination thereof.

4. A lubricant composition comprising the polyalphaolefin of claim 1 and an additive.

5. The polyalphaolefin of claim 1 , wherein the polyalphaolefin has:
a kinematic viscosity at −40° C. in a range from 5,000 to 9,000 cSt;
a kinematic viscosity at 40° C. in a range from 25 to 50 cSt;
a kinematic viscosity at 100° C. in a range from 4 to 10 cSt;
a viscosity index in a range from 120 to 150; and
a pour point in a range from −45 to −85° C.

6. The polyalphaolefin of claim 5 , wherein the polyalphaolefin comprises:
from 82 to 99 wt. % C 40 branched hydrocarbons; and
a maximum of 5 wt. %<C 40 hydrocarbons.

7. A lubricant composition comprising the polyalphaolefin of claim 6 and an additive.

8. The polyalphaolefin of claim 1 , wherein the polyalphaolefin comprises a maximum of 5 wt. %<C 40 hydrocarbons.

9. The polyalphaolefin of claim 8 , wherein the polyalphaolefin has a kinematic viscosity at −40° C. in a range from 6,500 to 9,000 cSt.

10. The polyalphaolefin of claim 1 , wherein the polyalphaolefin comprises a maximum of 3 wt. %<C 40 hydrocarbons, and the polyalphaolefin has a kinematic viscosity at −40° C. in a range from 7,000 to 8,500 cSt.

11. The polyalphaolefin of claim 1 , wherein the polyalphaolefin comprises from 85 to 99 wt. % C 40 branched hydrocarbons, and the polyalphaolefin has a kinematic viscosity at −40° C. in a range from 6,500 to 9,000 cSt.

12. The polyalphaolefin of claim 1 , wherein the polyalphaolefin has:
a kinematic viscosity at −40° C. in a range from 6,000 to 9,000 cSt;
a kinematic viscosity at 40° C. in a range from 25 to 45 cSt;
a kinematic viscosity at 100° C. in a range from 5 to 8 cSt;
a viscosity index in a range from 125 to 145; and
a pour point in a range from −50 to −75° C.

13. A lubricant composition comprising the polyalphaolefin of claim 12 and an additive.

14. The polyalphaolefin of claim 12 , wherein the polyalphaolefin comprises:
from 82 to 99 wt. % C 40 branched hydrocarbons; and
a maximum of 5 wt. %<C 40 hydrocarbons.

15. The polyalphaolefin of claim 12 , wherein the polyalphaolefin comprises:
from 85 to 99 wt. % C 40 branched hydrocarbons; and
a maximum of 3 wt. %<C 40 hydrocarbons.

Assignees

• Chevron Phillips Chemical Co Lp

Inventors

• Yang Hu
• Hope Kenneth D
• Gee Jeff C

Classifications

• C10N2020/02

  Viscosity; Viscosity index · CPC title

• C10G2400/10

  Lubricating oil · CPC title

• B01J2231/20

  Olefin oligomerisation or telomerisation · CPC title

• C10G69/126 Primary

  polymerisation, e.g. oligomerisation · CPC title

• C10M107/10 Primary

  containing aliphatic monomer having more than 4 carbon atoms · CPC title