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US 2006/0224026 A1Published application
Process of making a highly stable aromatic alkylate suitable for use in making improved additives and surfactants
AssigneeChevron U.S.A. Inc.
InventorsWilliam Schinski, Curt Campbell
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Abstract
A process for making medium and long chain alkylaromatics and alkylphenols having a high level of anti-Markovnikov addition of the alkyl group. The alkylaromatics and alkylphenols made by the process of the present invention have enhanced stability and are particularly well suited to make highly stable oil additives and enhanced oil recovery surfactants.
Claims8
A process for the production of alkyl aromatics, comprising:
- passing a feed comprising at least one olefin species and at least one aromatic species over a catalyst having anti-Markovnikov activity, at alkylation conditions, to form an intermediate alkylate having at least 50% anti-Markovnikov addition;
- subjecting the intermediate alkylate to mild dealkylation conditions, optionally in the presence of a dehydrogenation catalyst, to form a selectively dealkylated effluent stream;
- and
- recovering from the dealkylated effluent stream, a product stream having an enhanced amount of anti-Markovnikov alkylate.
1 more element
A process for making alkylphenols, comprising:
- passing a feed comprising phenol and an olefin over a catalyst having anti-Markovnikov activity, at alkylation conditions, to form an alkylphenol having at least 50% anti-Markovnikov composition.
A process for the production of alkyl aromatics, comprising:
- passing a feed comprising alpha olefins, vinylidenes, and aromatic compounds over a catalyst having anti-Markovnikov activity, at alkylation conditions, to form an intermediate alkylate having at least 50% anti-Markovnikov addition and comprising primary alkylate, secondary alkylate and tertiary alkylate;
- and
- subjecting the intermediate alkylate to mild dealkylation conditions, optionally in the presence of a dehydrogenation catalyst, to form a product stream having an enhanced amount of anti-Markovnikov alkylate.
Dependencies are inferred from the claim text.