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US 11,572,523 B1Granted
Sulfurized additives with low levels of alkyl phenols
AssigneeAfton Chemical Corporation
InventorsPaul Kondracki, Edward Standefer, Peter Hou
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Abstract
The present disclosure provides a detergent additives and methods for preparing a sulfurized alkyl phenate product to achieve a high sulfurization ratio and low levels of un-sulfurized alkyl phenols.
Claims12
A process for preparing a sulfurized alkyl phenate product, 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, neutralizing and optionally overbasing the sulfurized alkyl phenol in the presence of a solvent to provide a sulfurized alkyl phenate composition including a mixture of a sulfurized alkyl phenate and a residual unsulfurized alkyl phenol, wherein the sulfurizing, the neutralizing, and the optional overbasing may occur in any order;
- and
- post processing the sulfurized alkyl phenate composition to obtain the sulfurized alkyl phenate product, wherein the post processing includes reacting the sulfurized alkyl phenate composition with a triazine compound.
Dependencies are inferred from the claim text.