	US 12,384,983 B2
	High performance gear oil and related methods
Harrison T. Hawkins, Medford, NJ (US); Michael Blumenfeld, Annandale, NJ (US); Nilka Y. Brown, Conroe, TX (US); and Rugved P. Pathare, Pittstown, NJ (US)
Assigned to ExxonMobil Technology and Engineering Company, Spring, TX (US)
Filed by ExxonMobil Technology and Engineering Company, Spring, TX (US)
Filed on May 1, 2024, as Appl. No. 18/651,789.
Claims priority of provisional application 63/499,425, filed on May 1, 2023.
Prior Publication US 2024/0368495 A1, Nov. 7, 2024
Int. Cl. C10M 169/04 (2006.01); C10M 101/02 (2006.01); C10M 107/02 (2006.01); C10M 111/04 (2006.01); C10M 127/06 (2006.01); C10M 129/72 (2006.01); C10M 129/74 (2006.01); C10M 141/02 (2006.01); C10N 20/02 (2006.01); C10N 30/02 (2006.01); C10N 30/04 (2006.01); C10N 30/10 (2006.01); C10N 30/12 (2006.01); C10N 30/18 (2006.01); C10N 40/04 (2006.01)

CPC C10M 169/04 (2013.01) [C10M 101/02 (2013.01); C10M 107/02 (2013.01); C10M 111/04 (2013.01); C10M 127/06 (2013.01); C10M 129/72 (2013.01); C10M 129/74 (2013.01); C10M 141/02 (2013.01); C10M 2203/06 (2013.01); C10M 2203/1085 (2013.01); C10M 2205/0206 (2013.01); C10M 2207/282 (2013.01); C10M 2207/283 (2013.01); C10N 2020/02 (2013.01); C10N 2030/02 (2013.01); C10N 2030/041 (2020.05); C10N 2030/10 (2013.01); C10N 2030/12 (2013.01); C10N 2030/18 (2013.01); C10N 2040/04 (2013.01)]

20 Claims

1. A gear oil composition comprising:

a first oil basestock, the first oil basestock being a Group II bright stock having:

a kinematic viscosity (ASTM D445, 40° C.) of from 450 mm²/s to 520 mm²/s,

a kinematic viscosity (ASTM D445, 100° C.) of from 20 mm²/s to 70 mm²/s,

a viscosity index (ASTM D2270) of from 80 to 120, and

a pour point (ASTM D97) of from −50° C. to −20° C.; and

a second oil basestock, the second oil basestock being a polyalphaolefin (PAO) basestock having:

a kinematic viscosity (ASTM D445, 40° C.) of from 500 mm²/s to 3500 mm²/s,

a kinematic viscosity (ASTM D445, 100° C.) of from 60 mm²/s to 300 mm²/s,

a viscosity index (ASTM D2270) of from 150 to 250, and

a pour point (ASTM D97) of from −50° C. to −20° C.