公开(公告)号：US20250034477A1

公开(公告)日：2025-01-30

申请号：US18917804

申请日：2024-10-16

Applicant: CHEVRON ORONITE COMPANY LLC

Inventor： Ian G. ELLIOTT ,  Maryam SEPEHR ,  Sara Yue ZHANG ,  David MORGAN ,  Man Hon TSANG ,  Rainer KOLB ,  Periagaram S. RAVISHANKAR

IPC: C10M143/04 ,  C10M143/02 ,  C10M143/06 ,  C10M143/08 ,  C10M149/02 ,  C10M169/04 ,  C10N20/00 ,  C10N20/04 ,  C10N30/00 ,  C10N40/04 ,  C10N40/08 ,  C10N40/10 ,  C10N40/25

Abstract: Lubricating oil compositions are provided which contain bimodal copolymer compositions, and in particular bimodal ethylene-α-olefin copolymer compositions. The copolymer compositions comprise first and second ethylene-α-olefin copolymer components. The bimodal compositions are particularly useful as viscosity or rheology modifiers, e.g., in lubricating oil compositions. Lubricating oil compositions comprising the copolymer compositions advantageously exhibit enhanced shear stability index (SSI) and thickening efficiency (TE) values, while maintaining excellent low-temperature properties such as pour point, mini-rotary viscometer viscosity, and cold crank simulation performance.

公开(公告)号：US20240240100A1

公开(公告)日：2024-07-18

申请号：US18557771

申请日：2022-05-11

Applicant: ExxonMobil Chemical Patents Inc. ,  Chevron Oronite Company LLC

Inventor： Jo Ann M. CANICH ,  Jingwen ZHANG ,  Sara Yue ZHANG ,  David L. MORGAN ,  John R. HAGADORN ,  Peijun JIANG ,  Maryam SEPEHR

IPC: C10M119/02 ,  C08F210/02 ,  C08F210/06 ,  C10M169/02 ,  C10N20/00 ,  C10N20/04 ,  C10N30/00 ,  C10N30/02

CPC classification number: C10M119/02 ,  C08F210/02 ,  C08F210/06 ,  C10M169/02 ,  C10M2203/003 ,  C10M2205/024 ,  C10N2020/019 ,  C10N2020/04 ,  C10N2030/02 ,  C10N2030/68

Abstract: The present disclosure relates to lubricant compositions comprising a branched copolymer and methods for making such compositions. Lubricant compositions of the present disclosure comprise an oil and a copolymer and have a high temperature high shear (HTHS) viscosity of about 5 or less, shear stability index (30 cycles) of from about 2% to about 80%, a ratio of thickening efficiency to shear stability index (30 cycles) of from about 1:2 to about 1:30, a kinematic viscosity at 100° C. of from about 3 cSt to about 30 cSt, and a thickening efficiency of about 1 or more. In another class of embodiments, the present disclosure provides a lubricant composition comprising a first and a second copolymers wherein the first copolymer has an ethylene content higher than that of the second copolymer, and wherein at least one of the two copolymers is a long chain branched ethylene copolymer.

公开(公告)号：US20240218282A1

公开(公告)日：2024-07-04

申请号：US18557826

申请日：2022-05-11

Applicant: ExxonMobil Chemical Patents Inc. ,  Chevron Oronite Company LLC

Inventor： Jingwen ZHANG ,  Peijun JIANG ,  Jo Ann M. CANICH ,  John R. HAGADORN ,  Yen-Hao LIN ,  Sarah MATTLER ,  Chase A. ECKERT ,  Aaron REED ,  Adrian G. BARRY ,  Sara Yue ZHANG ,  Maryam SEPEHR ,  David L. MORGAN

IPC: C10M143/04 ,  C08F210/16 ,  C10M169/04 ,  C10N20/00 ,  C10N20/04 ,  C10N30/00 ,  C10N30/02

CPC classification number: C10M143/04 ,  C08F210/16 ,  C10M169/041 ,  C08F2420/10 ,  C08F2800/20 ,  C10M2203/003 ,  C10M2205/024 ,  C10N2020/019 ,  C10N2020/04 ,  C10N2020/071 ,  C10N2030/02 ,  C10N2030/40 ,  C10N2030/68

Abstract: The present disclosure also relates to lubrication compositions comprising a long branched ethylene copolymer and methods for making compositions. Compositions of the present disclosure can be a composition including an oil and a ethylene copolymer, the copolymer having one or more of an MWD from about 2.0 to about 6.5; an Mw(LS) from about 30,000 to about 300,000 g/mol; a g′vis of from about 0.5 to about 0.97; an ethylene content of about 40 wt % to less than 80 wt %. The compostion has a shear stability index (30 cycles) of from about 1% to about 60%; and a kinematic viscosity at 100° C. of from about 3 cSt to about 25 cSt. A method of making a composition includes blending an oil with a copolymer is also disclosed. Additionally, provided are novel long chain branched ethylene propylene copolymers and methods to produce such copolymers.

公开(公告)号：US20230174883A1

公开(公告)日：2023-06-08

申请号：US18052601

申请日：2022-11-04

Applicant: CHEVRON ORONITE COMPANY LLC ,  EXXONMOBIL CHEMICAL PATENTS INC.

Inventor： Sara Yue ZHANG ,  Maryam Sepehr ,  David L. Morgan ,  Jingwen Zhang ,  Jo Ann M. Canich ,  Peijun Jiang ,  John R. Hagadorn ,  Chase A. Eckert ,  Sarah J. Mattler ,  Shuhui Kang

IPC: C10M143/04 ,  C10M169/04 ,  C08F210/06

CPC classification number: C10M143/04 ,  C10M169/041 ,  C08F210/06 ,  C10M2203/003 ,  C10M2205/024 ,  C10N2020/04

Abstract: Provided is a lubricating oil composition that includes a major amount of a lubricant base oil and a minor amount of a viscosity index improver comprising a syndiotactic propylene-based ethylene-propylene copolymer comprising: a) 2 to 20% by weight of ethylene, b) 80 to 98% by weight of propylene; c) 50 to 99% of rr triads; and d) Mw (LS) of 10 to 250 kg/mol.