US 12,241,038 B2
Polyalphaolefin phenols with high para-position selectivity
Xin Tian, Midlothian, VA (US); Jason Bell, Powhatan, VA (US); and Steven Anderson, Amelia Courthouse, VA (US)
Assigned to Afton Chemical Corporation, Richmond, VA (US)
Filed by Afton Chemical Corporation, Richmond, VA (US)
Filed on Mar. 27, 2024, as Appl. No. 18/618,450.
Application 18/618,450 is a continuation of application No. 18/171,560, filed on Feb. 20, 2023, granted, now 11,976,252.
Claims priority of provisional application 63/312,228, filed on Feb. 21, 2022.
Prior Publication US 2024/0228904 A1, Jul. 11, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. C10M 151/02 (2006.01); C11D 7/34 (2006.01); C11D 17/06 (2006.01); C10N 30/04 (2006.01)
CPC C10M 151/02 (2013.01) [C11D 7/34 (2013.01); C11D 17/06 (2013.01); C10M 2221/02 (2013.01); C10N 2030/04 (2013.01)] 10 Claims
 
1. An alkyl phenol suitable for forming a sulfurized alkyl phenate detergent composition, the alkyl phenol comprising the reaction product of a hydroxyaromatic compound and a polyalphaolefin oligomer derived from one or more C6 to C14 monomers forming an oligomer in the form of a dimer, trimer, tetramer, pentamer, or combination thereof, or copolymers of the oligomer, copolymer variants of the oligomer, or combinations thereof; and wherein about 40 mol percent or greater of the polyalphaolefin includes a carbon atom configured to form a tertiary carbocation position to react with the hydroxyaromatic compound at the para-position.