公开(公告)号：US20240368495A1

公开(公告)日：2024-11-07

申请号：US18651789

申请日：2024-05-01

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Harrison T. HAWKINS ,  Michael BLUMENFELD ,  Nilka Y. BROWN ,  Rugved P. PATHARE

IPC: C10M169/04 ,  C10M101/02 ,  C10M107/02 ,  C10M111/04 ,  C10M127/06 ,  C10M129/72 ,  C10M129/74 ,  C10M141/02 ,  C10N20/02 ,  C10N30/02 ,  C10N30/04 ,  C10N30/10 ,  C10N30/12 ,  C10N30/18 ,  C10N40/04

Abstract: Gear oil compositions including a first oil basestock and a second basestock. The first basestock includes a Group II bright stock having a kinematic viscosity (ASTM D445, 40° C.) of from 250 mm2/s to 600 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. The second basestock includes 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.