US 12,103,908 B2
Distillation process for producing a low TPP phenate
Eugene Edward Spala, Fairfield, CA (US)
Assigned to CHEVRON ORONITE COMPANY LLC, San Ramon, CA (US)
Filed by CHEVRON ORONITE COMPANY LLC, San Ramon, CA (US)
Filed on Mar. 11, 2020, as Appl. No. 16/815,062.
Claims priority of provisional application 62/820,612, filed on Mar. 19, 2019.
Prior Publication US 2020/0299233 A1, Sep. 24, 2020
Int. Cl. C07C 319/28 (2006.01); B01D 3/40 (2006.01); C10M 135/06 (2006.01); C07C 323/20 (2006.01); C10N 10/04 (2006.01); C10N 30/04 (2006.01)
CPC C07C 319/28 (2013.01) [B01D 3/40 (2013.01); C10M 135/06 (2013.01); C07C 323/20 (2013.01); C10M 2219/088 (2013.01); C10N 2010/04 (2013.01); C10N 2030/04 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A process for preparing a sulfurized non-overbased calcium phenate detergent having a reduced content of un-sulfurized alkyl-substituted phenol and the salt thereof, the process comprising the steps of:
(a) adding an organic solvent to the detergent, wherein the organic solvent has a boiling point of equal or above the boiling point of the un-sulfurized alkyl-substituted phenol; and
(b) distilling the organic solvent from the detergent thereby reducing the content of the un-sulfurized alkyl-substituted phenol.