Polyalphaolefin phenols with high para-position selectivity
AssigneeAfton Chemical Corporation
InventorsXin Tian, Jason Bell, Steven Anderson
Life of this patent
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Abstract
The present disclosure provides a detergent additives and methods for preparing a sulfurized alkyl phenate product from polyalphaolefins.
Claims20
A sulfurized alkyl phenate comprising a polyalphaolefin substituted bridged hydroxyaromatic compound or salt thereof, wherein the polyalphaolefin is derived from one or more C6 to C14 monomers forming an oligomer in the form of a dimer, a trimer, a tetramer, a pentamer or combinations 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 positioned to react with the hydroxyaromatic compound at the para-position.
A detergent composition including a sulfurized alkyl phenate having a structure of Formula IX:
- wherein
- each R24 independently, is a polyalphaolefin derived from one or more C6 to C14 monomers forming an oligomer in the form of a dimer, a trimer, a tetramer, a pentamer, or combinations thereof, or copolymers of the oligomer, copolymer variants of the oligomer, or combinations thereof including a residue of a tertiary carbocation forming the bond to the aromatic ring, wherein at least 50 mol percent of R24 is bonded to the aromatic ring at the para-position;
- wherein each R24, independently, has about 40 weight percent or more of at least one alkyl group adjacent the tertiary carbocation having 1, 2, or 3 carbon atoms;
- x is an integer from 1 to 4;
- and
- M2+ is a divalent metal ion.
Dependencies are inferred from the claim text.