Invention Publication
- Patent Title: ENGINE OIL FORMULATION WITH IMPROVED SEQUENCE VIII PERFORMANCE
-
Application No.: US17528986Application Date: 2021-11-17
-
Publication No.: US20230151292A1Publication Date: 2023-05-18
- Inventor: Kenneth Garelick , Todd Dvorak , Mark Devlin
- Applicant: AFTON Chemical Corporation
- Applicant Address: US VA Richmond
- Assignee: AFTON Chemical Corporation
- Current Assignee: AFTON Chemical Corporation
- Current Assignee Address: US VA Richmond
- Main IPC: C10M137/10
- IPC: C10M137/10 ; C10M125/22 ; C10M143/02 ; C10M143/04 ; C10M169/04
Abstract:
The present disclosure relates to methods of improving viscosity shear stability of a lubricating oil and lubricating oil composition comprising:
a base oil of lubricating viscosity;
an amount of one or more zinc dialkyl dithiophosphate compound(s);
wherein the lubricating oil composition has one or both of the following ratios:
a) a ratio of KV40° C.fresh to a weight % of zinc contributed by the one or more zinc dialkyl dithiophosphate compound(s) based on a total weight of the lubricating oil composition, of greater than 510, wherein KV40° C.fresh is the kinematic viscosity of the fresh lubricating oil composition at 40° C.; and
b) a ratio of KV40° C.fresh to a weight % of phosphorus contributed by the one or more zinc dialkyl dithiophosphate compound(s) based on a total weight of the lubricating oil composition, of greater than 560, wherein KV40° C.fresh is the kinematic viscosity of the fresh lubricating oil composition at 40° C.
a base oil of lubricating viscosity;
an amount of one or more zinc dialkyl dithiophosphate compound(s);
wherein the lubricating oil composition has one or both of the following ratios:
a) a ratio of KV40° C.fresh to a weight % of zinc contributed by the one or more zinc dialkyl dithiophosphate compound(s) based on a total weight of the lubricating oil composition, of greater than 510, wherein KV40° C.fresh is the kinematic viscosity of the fresh lubricating oil composition at 40° C.; and
b) a ratio of KV40° C.fresh to a weight % of phosphorus contributed by the one or more zinc dialkyl dithiophosphate compound(s) based on a total weight of the lubricating oil composition, of greater than 560, wherein KV40° C.fresh is the kinematic viscosity of the fresh lubricating oil composition at 40° C.
Public/Granted literature
- US11773343B2 Engine oil formulation with improved Sequence VIII performance Public/Granted day:2023-10-03
Information query
IPC分类:
