US 11,773,341 B2
Lubricating oil compositions
Claire Chommeloux, San Francisco, CA (US); and Alexander Boffa, Oakland, CA (US)
Assigned to CHEVRON ORONITE COMPANY LLC, San Ramon, CA (US)
Filed by Chevron Oronite Company LLC, San Ramon, CA (US)
Filed on Jun. 18, 2019, as Appl. No. 16/443,971.
Claims priority of provisional application 62/688,567, filed on Jun. 22, 2018.
Prior Publication US 2019/0390130 A1, Dec. 26, 2019
Int. Cl. C10M 133/44 (2006.01); C10M 139/06 (2006.01); C10N 30/00 (2006.01); C10N 40/25 (2006.01)
CPC C10M 133/44 (2013.01) [C10M 139/06 (2013.01); C10M 2215/223 (2013.01); C10N 2030/36 (2020.05); C10N 2040/25 (2013.01)] 20 Claims
 
1. A lubricating oil composition comprising:
(a) a major amount of an oil of lubricating viscosity having a kinematic viscosity at 100° C. in a range of about 2 to about 50 mm2/s;
(b) a non-borated hydrocarbyl succinimide dispersant;
(c) a borated hydrocarbyl succinimide dispersant; and
(d) a hydrocarbyl succinimide post-treated with a post-treating agent selected from the group consisting of an organic carbonate, an epoxide, a lactone, a hydroxyaliphatic carboxylic acid, and combinations thereof.