A method comprises obtaining or providing a treatment fluid comprising an imidazolinium compound and placing the treatment fluid in a subterranean formation. The imidazolinium compound functions as a viscoelastic surfactant (VES) gelling agent and as a corrosion inhibitor.

A method comprises obtaining or providing a treatment fluid comprising an imidazolinium compound and placing the treatment fluid in a subterranean formation. The imidazolinium compound functions as a viscoelastic surfactant (VES) gelling agent and as a corrosion inhibitor.

The invention provides a lubricating composition containing an oil of lubricating viscosity and an ashless ketone compound with at least one of a hydroxy group and an ether linkage attached to the carbon atom adjacent to the carbonyl carbon of the ketone, especially -hydroxyketone. The invention further relates to methods of lubricating an internal combustion engine by supplying the described lubricating composition to the internal combustion engine. The invention further relates to the use of the -hydroxyketone compound as a friction modifier and an antiwear agent.

The present invention generally relates to improved processes for the preparation of amphiphilic imidazolinium compounds such as 1-[2-(9(Z)-octadecenoyloxy)ethyl]-2-(8(Z)-heptadecenyl)-3-(2-hydroxyethyl)imidazolinium chloride (DOTIM). In particular, the invention relates to processes for the synthesis of such compounds that avoid the need for toxic reagents, are more economical, and result in less waste than conventional methods. DOTIM and similar compounds can be formulated as cationic liposomes, which are useful as chemical vectors for nucleic acid delivery in gene therapy.

The present invention generally relates to improved processes for the preparation of amphiphilic imidazolinium compounds such as 1-[2-(9(Z)-octadecenoyloxy)ethyl]-2-(8(Z)-heptadecenyl)-3-(2-hydroxyethyl)imidazolinium chloride (DOTIM). In particular, the invention relates to processes for the synthesis of such compounds that avoid the need for toxic reagents, are more economical, and result in less waste than conventional methods. DOTIM and similar compounds can be formulated as cationic liposomes, which are useful as chemical vectors for nucleic acid delivery in gene therapy.

The present invention relates to compounds of formula I (I) as well as to the compounds of formula I for use as transmembrane serine protease 2 (TMPRSS2) inhibitors in the treatment of viral infections, such as e.g. corona virus infections. Exemplary compounds are e.g. 3-(2-(benzo[d]thiazol-2-yl)-2-(phenylsufonamido)ethyl)benzimidamide (example 1), as well as derivatives and related compounds thereof.

An imidazoline compound, a mobility control system, a plugging agent for gas channeling, and a method for carbon dioxide flooding. The structure of the imidazoline compound is represented by formula (1), in which R is pentadecyl, heptadecenyl, or heptadecyl. A mobility control system that contains the imidazoline compound can interact with carbon dioxide to form a plugging agent for gas channeling, and thereby attains a plugging effect for carbon dioxide channeling in a carbon dioxide flooding process. ##STR00001##

An imidazoline compound, a mobility control system, a plugging agent for gas channeling, and a method for carbon dioxide flooding. The structure of the imidazoline compound is represented by formula (1), in which R is pentadecyl, heptadecenyl, or heptadecyl. A mobility control system that contains the imidazoline compound can interact with carbon dioxide to form a plugging agent for gas channeling, and thereby attains a plugging effect for carbon dioxide channeling in a carbon dioxide flooding process. ##STR00001##

An imidazoline compound, a mobility control system, a plugging agent for gas channeling, and a method for carbon dioxide flooding. The structure of the imidazoline compound is represented by formula (1), in which R is pentadecyl, heptadecenyl, or heptadecyl. A mobility control system that contains the imidazoline compound can interact with carbon dioxide to form a plugging agent for gas channeling, and thereby attains a plugging effect for carbon dioxide channeling in a carbon dioxide flooding process.

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An imidazoline compound, a mobility control system, a plugging agent for gas channeling, and a method for carbon dioxide flooding. The structure of the imidazoline compound is represented by formula (1), in which R is pentadecyl, heptadecenyl, or heptadecyl. A mobility control system that contains the imidazoline compound can interact with carbon dioxide to form a plugging agent for gas channeling, and thereby attains a plugging effect for carbon dioxide channeling in a carbon dioxide flooding process.

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