Process for the decarboxylative ketonization of fatty acids or fatty acid derivatives

    公开(公告)号:US11091417B2

    公开(公告)日:2021-08-17

    申请号:US16326460

    申请日:2017-08-17

    Abstract: The present invention is directed to a process for synthesizing an internal ketone K1 by decarboxylative ketonization reaction of a fatty acid, a fatty acid derivative or a mixture thereof in a liquid phase with a metal compound as catalyst in a reaction medium, said process being characterized in that a ketone K2 at liquid state, which is identical or similar to the ketone K1, is introduced into the reaction medium. The so-synthesized internal ketone K1 can be used for the preparation of a variety of end compounds, including surfactants having a twin-tail structure or a Gemini structure.

    Zwitterionic surfactants suitable for enhanced oil recovery

    公开(公告)号:US11028315B2

    公开(公告)日:2021-06-08

    申请号:US16091227

    申请日:2017-03-30

    Abstract: The instant invention relates to surfactants having the following formula (I) wherein: each of Ra and Rb is a linear or branched, saturated or unsaturated, hydrocarbon chain, each of Rc and Rd is a alkyl chain having 1 to 10 carbon atoms, each of (E1) and (E2) is a divalent hydrocarbon radical, A is: a group a carboxylate group —COO− (optionally in all or part in the form —COOH); or a sulfonate group —SO3− (optionally in all or part in the form —SO3H). The invention also relate to the preparation of these surfactants and their use in oil extraction, especially in EOR applications.

Patent Agency Ranking