Multifunctional composition base 1,3-oxazinan-6-ones with corrosion inhibition and heavy organic compounds inhibition and dispersants and obtaining process

Patent metadata

Field	Value
Publication number	US-9586915-B2
Application number	US-201414563202-A
Country	US
Kind code	B2
Filing date	Dec 8, 2014
Priority date	Apr 30, 2010
Publication date	Mar 7, 2017
Grant date	Mar 7, 2017

Abstract

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, transportation, refining and storage of crude oil and derivatives. The corrosion inhibitor with inhibitory/dispersant of asphaltenes properties comprises an active substance base of 1,3-oxaninan-6-ones and hydrocarbon solvents such as benzene, toluene, mixed xylenes, o-xylene, m-xylene and p-xylene, diesel, kerosene, jet fuel, alcohols, aliphatic branched and unbranched alcohols containing from 3 to 10 carbon atoms, such as isopropanol, butanol and pentanol, and mixtures of hydrocarbon solvents with aliphatic branched or unbranched liquid fuels. In addition, a process for obtaining 1,3-oxazinan-6-ones derivatives of N-alkyl or N-alkenyl or N-cycloalkyl or N-aryl propionic acids and paraformaldehyde is described.

First claim

What is claimed is:

1. A method of inhibiting corrosion in wells, pipelines and storage tanks containing crude oil or fuel, said method comprising adding to said crude oil or fuel in the wells, pipelines or storage tanks a corrosion inhibiting composition including a 1,3-oxazinan-6-one having the formula

wherein R is a linear or branched alkyl chain of 6 to 18 carbons, a linear or branched chain alkenyl of 8 to 20 carbons or aromatic cycloalkyl having 5 to 12 carbons, R 1 is a radical selected from the group consisting of H and —CH 3 , and R 2 is a radical selected from the group consisting of H and CH 3 , wherein said composition comprises said 1,3-oxazinan-6-one in an amount of 10% to 90% by weight based on the weight of the composition.

2. The method of claim 1 , wherein said fuel is selected from the group consisting of gasoline without desulfurizing, alkylated gasoline, low-sulfur diesel, methyl tertiary butyl ether, gasoline, kerosene and jet fuel.

3. The method of claim 1 , wherein the composition is added to crude oil and products derived from crude oil to prevent and control the deposition of asphaltenes in wells, pipelines and refining plants.

4. The method of claim 1 , comprising adding the 1,3-oxazinan-6-one to crude oil in an amount of 1 to 2000 parts per million (ppm) based on the weight of said crude oil or fuel.

5. The method of claim 1 , comprising adding the 1,3-oxazinan-6-one to crude oil in an amount of 1 to 1000 parts per million (ppm) based on the weight of said crude oil or fuel.

6. The method of claim 1 , comprising adding the 1,3-oxazinan-6-one to fuel in an amount of 1 to 50 parts per million (ppm) when another class additive which controls the deposition of organic compounds is present.

7. The method of claim 1 , comprising adding the 1,3-oxazinan-6-one to fuel in an amount of 1 to 20 parts per million (ppm).

8. The method of claim 1 , wherein said composition comprises a hydrocarbon solvent in an amount of 10% to 90% by weight.

9. The method of claim 1 , wherein said composition comprises a hydrocarbon solvent in an amount of 10% to 50% by weight and said 1,3-oxazinan-6-one in an amount of 25% to 75% by weight based on the weight of the composition.

Assignees

• Mexicano Inst Petrol

Inventors

• Hernandez Altamirano Raul
• Mena Cervantes Violeta Yasmin
• Zamudio Rivera Luis Silvestre
• Beltran Conde Hiram Isaac
• Buenrostro Gonzalez Eduardo

Classifications

• C07C227/10

  with simultaneously increasing the number of carbon atoms in the carbon skeleton · CPC title

• C10G75/02

  by addition of corrosion inhibitors · CPC title

• C10L1/14

  Organic compounds · CPC title

• C10L1/1824

  mono-hydroxy · CPC title

• C10L1/1608

  Well defined compounds, e.g. hexane, benzene · CPC title