SUPRAMOLECULAR SURFACTANTS WITH DETERGENT-DISPERSANT AND CORROSION INHIBITOR PROPERTIES

• Main Authors: Zamudio Rivera, Luis Silvestre, Camacho, Ricardo Cerón, Ramírez Pérez, Jorge Francisco, Nieto Álvarez, David Aaron, Roa, Raúl Oviedo, Martínez Magadan, José Manuel, Dévora, Rodolfo Cisneros, Servín Nájera, Ana Graciela, Castruita, Enrique Soto
• Format: Patent
• Language: English
• Published: 14.12.2023
• Subjects: ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; ADHESIVES; CHEMISTRY; DYES; FIRELIGHTERS; FUELS; FUELS NOT OTHERWISE PROVIDED FOR; LIQUEFIED PETROLEUM GAS; LUBRICANTS; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL GAS; NATURAL RESINS; PAINTS; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; POLISHES; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K; TECHNICAL GASES CONTAINING CARBON MONOXIDE

The present invention relates to supramolecular surfactants (SS) with detergent-dispersant of heavy organic compounds (deposits and/or organic scales) and corrosion inhibition properties, and methods for preparing these surfactants. The invention also relates to the corresponding uses and applications of these surfactants to prevent and control the formation of deposits in internal combustion machines, as well as to prevent and protect pipelines, tanks, motors and complements of ferrous materials against corrosion where there is contact with liquid hydrocarbons such as gasoline, turbosine, and diesel, where gasoline may contain oxygenated compounds such as ethers and/or alcohols. The supramolecular surfactants are obtained from the self-assembly process between oxazolidines derived from polyalkyl/polyalkenyl N-hydroxyalkyl succinimides with alkyl/alkenyl-amine-propanoic acids and alkyl/alkenyl-amine-di-propanoic acids. The concentration of supramolecular surfactants in liquid fuels is quantified through a process based on determining the interfacial tension in a fuel/water/supramolecular surfactant system.