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US 5,334,775 AGranted
Polymer Alkylation of hydroxyaromatic compounds
AssigneeExxon Chemical Patents Inc.
InventorsAntonio Gutierrez, Stuart L. Soled, Jose A. Paes
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Abstract
A process for alkylating hydroxyaromatic compounds with a terminally unsaturated polymer in the presence of a partially or completely dehydrated heteropoly catalyst. The alkylated hydroxyaromatic compounds so formed are useful as precursors for the production of fuel and lubricant additives.
Claims17
A process for producing an alkylated hydroxyaromatic compound, comprising:
- contacting, in the liquid phase,
- a hydroxyaromatic compound,
- a polymer alkylating agent of at least about 500 number average molecular weight and having at least one reactive carbon-carbon double bond unsaturation, and
- a heteropoly catalyst having substantially no waters of crystallization per heteropolyanion therein and forming an alkylated hydroxy aromatic compound.
1 more element
Dependencies are inferred from the claim text.