US 12,454,656 B2
Additives with high sulfurization for lubricating oil compositions
Mitchell Latimer, Montpellier, VA (US); Piotr Grzyska, Richmond, VA (US); and Jason Bell, Powhatan, VA (US)
Assigned to AFTON CHEMICAL CORPORATION
Appl. No. 18/850,353
Filed by AFTON CHEMICAL CORPORATION, Richmond, VA (US)
PCT Filed Apr. 27, 2023, PCT No. PCT/US2023/020157
§ 371(c)(1), (2) Date Sep. 24, 2024,
PCT Pub. No. WO2023/212165, PCT Pub. Date Nov. 2, 2023.
Claims priority of provisional application 63/478,724, filed on Jan. 6, 2023.
Claims priority of provisional application 63/432,757, filed on Dec. 15, 2022.
Claims priority of provisional application 63/432,752, filed on Dec. 15, 2022.
Claims priority of provisional application 63/335,474, filed on Apr. 27, 2022.
Prior Publication US 2025/0236807 A1, Jul. 24, 2025
This patent is subject to a terminal disclaimer.
Int. Cl. C10M 135/02 (2006.01); C07C 319/14 (2006.01); C10M 169/04 (2006.01); C10N 30/00 (2006.01); C10N 30/02 (2006.01); C10N 30/04 (2006.01); C10N 40/25 (2006.01)
CPC C10M 135/02 (2013.01) [C07C 319/14 (2013.01); C10M 169/04 (2013.01); C10M 2219/02 (2013.01); C10N 2030/02 (2013.01); C10N 2030/04 (2013.01); C10N 2030/52 (2020.05); C10N 2040/252 (2020.05); C10N 2040/255 (2020.05)] 20 Claims
OG exemplary drawing
 
1. A process for preparing a sulfurized alkyl phenate product to achieve a high sulfurization ratio of sulfurized alkyl phenate to unsulfurized alkyl phenate, the process comprising:
sulfurizing an alkyl phenol with a source of sulfur to provide a sulfurized alkyl phenol, wherein the alkyl phenol is derived from an alkylation of a phenol and wherein a mol ratio of the sulfur source to the alkyl phenol is about 0.66 to about 3.5;
neutralizing and optionally overbasing the sulfurized alkyl phenol in the presence of a solvent to provide a sulfurized alkyl phenate composition, wherein the neutralizing and the optional overbasing is at a temperature not exceeding about 140° C. to achieve a sulfurization ratio of about 500:1 or greater; and
post processing the sulfurized alkyl phenate composition to obtain the sulfurized alkyl phenate product, wherein the post processing is at temperatures not to exceed about 140° C. to maintain the sulfurization ratio of about 500:1 or greater.