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Raul Hernandez Altamirano, Violeta Yasmin Mena Cervantes, Luis Silvestre Zamudio Rivera, Hiram Isaac Beltran Conde, Simon Lopez Ramirez: Gemini surfactants, process of manufacture and use as multifunctional corrosion inhibitors. Instituto Mexicano del Petroleo, Roylance Abrams Berdo & Goodman L, August 27, 2013: US08518868 (2 worldwide citation)

Gemini surfactants having the structural formula: where: R1 is a radical represented by —H or —CH3, R2 is an alkyl or alkenyl chain, or cycloalkyl or aryl; R3 is a radical represented by —H, —CH3, —CH═CH—CH3, or —COOX; R4 is a radical represented by —H, —CH3, or —CH2—COOX; R5 is a radical represente ...


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Raul Hernandez Altamirano, Violeta Yasmin Mena Cervantes, Luis Silvestre Zamudio Rivera, Hiram Isaac Beltran Conde, Simon Lopez Ramirez: Gemini surfactants, process of manufacture and use as multifunctional corrosion inhibitors. Instituto Mexicano del Petroleo, Roylance Abrams Berdo & Goodman L, May 5, 2015: US09023785

Gemini surfactants of bis-N-alkyl polyether, bis-N-alkenyl polyether, bis-N-cycloalkyl polyether, bis-N-aryl polyether bis-beta or alpha-amino acids or their salts, are produced for use as multifunctional corrosion inhibitors, which protect and prevent corrosion of ferrous metals exposed to acidic, ...


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Raul Hernandez Altamirano, Violeta Yasmin Mena Cervantes, Luis Silvestre Zamudio Rivera, Hiram Isaac Beltran Conde, Eduardo Buenrostro Gonzalez: Multifunctional composition base 1,3-oxazinan-6-ones with corrosion inhibition and heavy organic compounds inhibition and dispersants and obtaining process. INSTITUTO MEXICANO DEL PETROLEO, Dickinson Wright PLLC, March 7, 2017: US09586915

Base compounds including 1,3-oxazinan-6-one derivatives of N-alkyl or N-alkenyl or N-cycloalkyl or N-aryl propionic acids and paraformaldehyde, and their application as corrosion inhibitors with multifunctional properties serving as inhibitory/dispersant of asphaltene in production processes, transp ...


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Violeta Yasmin Mena Cervantes, Simon Lopez Ramirez, Luis Silvestre Zamudio Rivera, Youri Douda, Marcelo Lozada Y Cassou, Adela Morales Pacheco, Hiram Issac Beltran Conde, Raul Hernandez Altamirano, Eduardo Buenrostro Gonzalez, Mariana Barcenas Castaneda: Asphaltene-dispersing/inhibiting additive based on oxazolidines derived from polyalkyl or polyalkenyl N-hydroxyalkyl succinimides. INSTITUTO MEXICANO DEL PETROLEO, Dickinson Wright PLLC, December 29, 2015: US09221803

The present invention relates to formulations of asphaltenes' inhibitor-dispersant additives based on oxazolidine derived from polyalkyl or polyalkenyl N-hydroxyalkyl succinimides. Said formulations can contain inert organic solvents, preferably including: toluene, mixtures of xylene, o-xylene, p-xy ...


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Luis Silvestre Zamudio Rivera, Eugenio Alejandro Flores Oropeza, Marcelo Lozada y Cassou, Hiram Issac Beltran Conde, Eduardo Buenrostro Gonzalez, Youri Douda, Mario Alberto Guzman Vega, Adela Morales Pacheco, Violeta Yasmin Mena Cervantes, Raul Hernandez Altamirano: Oxazolidines derived from polyalkyl or polyalkenyl n-hydroxyalkyl succinimides, obtainment process and use. Instituto Mexicano Del Petroleo, Roylance Abrams Berdo & Goodman, May 6, 2010: US20100107478-A1

The present invention relates to oxazolidines derived from polyalkyl or polyalkenyl N-hydroxyalkyl succinimides, the obtainment process thereof, and their use to prevent and control the formation of deposits in internal combustion engines, primarily in formulations of additives to be applied to hydr ...


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Violeta Yasmin Mena Cervantes, Simon Lopez Ramirez, Luis Silvestre Zamudio Rivera, Youri Douda, Mario Alberto Guzman Vega, Marcelo Lozada Y Cassou, Adela Morales Pacheco, Hiram Issac Beltran Conde, Raul Hernandez Altamirano, Eduardo Buenrostro Gonzalez, Mariana Barcenas Castaneda: Formulations comprising an asphaltene-dispersing/inhibiting additive based on oxazolidines derived from polyalkyl or polyalkenyl N-hydroxyalkyl succinimides. Instituto Mexicano Del Petroleo, July 7, 2011: US20110162558-A1

The present invention relates to formulations of asphaltenes' inhibitor-dispersant additives based on oxazolidine derived from polyalkyl or polyalkenyl N-hydroxyalkyl succinimides. Said formulations can contain inert organic solvents, preferably including: toluene, mixtures of xylene, o-xylene, p-xy ...