公开(公告)号：US20230174883A1

公开(公告)日：2023-06-08

申请号：US18052601

申请日：2022-11-04

申请人： CHEVRON ORONITE COMPANY LLC ,  EXXONMOBIL CHEMICAL PATENTS INC.

发明人： 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分类号： C10M143/04 ,  C10M169/04 ,  C08F210/06

CPC分类号： C10M143/04 ,  C10M169/041 ,  C08F210/06 ,  C10M2203/003 ,  C10M2205/024 ,  C10N2020/04

摘要： 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.

公开(公告)号：US11926802B2

公开(公告)日：2024-03-12

申请号：US18052601

申请日：2022-11-04

申请人： CHEVRON ORONITE COMPANY LLC ,  EXXONMOBIL CHEMICAL PATENTS INC.

发明人： 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 ,  Pritesh Arjunbhai Patel

IPC分类号： C10M143/04 ,  C08F210/06 ,  C10M169/04 ,  C10N20/04 ,  C10N30/02 ,  C10N40/25

CPC分类号： C10M143/04 ,  C08F210/06 ,  C10M169/041 ,  C08F2800/20 ,  C10M2203/003 ,  C10M2205/024 ,  C10N2020/04 ,  C10N2030/02 ,  C10N2040/25

摘要： 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.