Corrosion inhibitor compositions for oxygenated gasolines

Patent metadata

Field	Value
Publication number	US-10131859-B2
Application number	US-201213729741-A
Country	US
Kind code	B2
Filing date	Dec 28, 2012
Priority date	Dec 30, 2011
Publication date	Nov 20, 2018
Grant date	Nov 20, 2018

Abstract

This invention relates to corrosion inhibitor additive combinations giving long acting performance in oxygenated gasoline blends comprising either low carbon number (<3) or high carbon number (greater than or equal to 4) alcohols or mixtures thereof and adapted for use in fuel delivery systems and internal combustion engines. The invention also is concerned with a process for conferring anti-corrosion properties to oxygenates in gasoline fuel mixtures wherein the oxygenate comprises biologically-derived butanol.

First claim

What is claimed:

1. A gasoline composition comprising
a gasoline blend stock,
2 to 24 v/v % isobutanol,
an amount of one or more corrosion inhibitors wherein said amount is about 1 ptb to 4 ptb and wherein said one or more corrosion inhibitors comprises at least one reaction product of a combination of at least one organic acid, at least one dimer acid, or at least one trimer acid with at least one amine and said one or more corrosion inhibitors have an acid/amine equivalence ratio of about 0.1 to about 3, and
a reaction product of an aldehyde or a ketone with an aliphatic hydrocarbyl substituted amine, a hydrocarbyl-substituted poly(oxyalkylene) amine, a hydrocarbyl-substituted succinimide, or a polyalkylphenoxyaminoalkane.

2. The gasoline composition of claim 1 , wherein the organic acid is tricarboxylic acid.

3. The gasoline composition of claim 1 , wherein the amine is a fatty diamine, fatty amine, polyamine, ether amine, or ether diamine.

4. The gasoline composition of claim 1 , wherein the aliphatic hydrocarbyl-substituted amine is a polyisobutenyl monoamine, a polyisobutyl monoamine, a polyisobutenyl polyamine, or a polyisobutyl polyamine.

5. The gasoline composition of claim 1 , wherein the hydrocarbyl-substituted poly(oxyalkylene) amine is alkylphenyl poly(oxybutylene) aminocarbamate.

6. The gasoline composition of claim 1 , wherein the isobutanol is biologically-derived isobutanol.

7. The gasoline composition of claim 1 , wherein the composition comprises 16 v/v % isobutanol.

Assignees

• Butamax Tm Advanced Biofuels
• Butamax Advanced Biofuels Llc

Inventors

• Wolf Leslie R
• Baustian James J

Classifications

• C10L1/224

  Amides; Imides {carboxylic acid amides, imides (C10L1/221, C10L1/2227 take precedence)} · CPC title

• C10L2270/02

  for internal combustion engines · CPC title

• C10L1/2387

  Polyoxyalkyleneamines {(poly)oxyalkylene amines and derivatives thereof (substituted by a macromolecular group containing 30C) (C10L1/221 takes precedence)} · CPC title

• C10G75/02

  by addition of corrosion inhibitors · CPC title

• C10L2200/0423

  Gasoline · CPC title