Fuel oil composition

• US 20050039384A1
• Filed: 06/30/2004
• Published: 02/24/2005
• Est. Priority Date: 07/03/2003
• Status: Active Grant

• Current Assignee: Infineum International Limited (Infineum)
• Original Assignee: Infineum International Limited (Infineum)
• Inventors: Gormley, Fiona K.
• Granted Patent: US 7,520,906 B2
• Time in Patent Office: Days
• US Class Current: 44/397
• CPC Class Codes: C10L 1/1963 mono-carboxylic
• CPC Class Codes: C10L 1/2383 Polyamines or polyimines, or derivatives thereof (poly)amines and imines; derivatives thereof (substituted by a macromolecular group containing 30C) C10L1/221 takes precedence
• CPC Class Codes: C10L 1/2493 compounds of uncertain formula; reactions of organic compounds (hydrocarbons, acids, esters) with sulfur or sulfur containing compounds

Abstract

A fuel oil containing a conductivity improving additive comprising the combination of: (a) a polymethacrylate, polyacrylate or polyfumarate polymer not prepared from a quaternary ammonium monomer and having a number average molecular weight of about 1,000 to 10,000,000 and either (b) a conductivity improver comprising (i) an olefin polysulfone and (ii) a polymeric polyamine reaction product of epichlorohydrin and an aliphatic primary monoamine or an N-aliphatic hydrocarbyl alkylene diamine, or the sulfonic acid salt of the polymeric polyamine reaction product or (c) a conductivity improver comprising a hydrocarbon soluble copolymer of an alkylvinyl monomer and a cationic vinyl monomer, wherein the copolymer has an alkylvinyl monomer unit to cationic vinyl monomer unit ratio of from about 1:1 to about 10:1, the copolymer having a number average molecular weight of from about 800 to about 1,000,000.

Claims

1. A fuel oil composition which comprises a fuel oil having an inherent conductivity of less than 10 pS/m and an additive comprising:

(a) a polymethacrylate, polyacrylate or polyfumarate polymer not prepared from a quaternary ammonium monomer and having a number average molecular weight of 1,000 to 10,000,000; and

either

(b) a conductivity improver comprising (i) an olefin polysulfone and (ii) a polymeric polyamine reaction product of epichlorohydrin and an aliphatic primary monoamine or an N-aliphatic hydrocarbyl alkylene diamine, or the sulfonic acid salt of the polymeric polyamine reaction product, or

(c) a conductivity improver comprising a hydrocarbon soluble copolymer of an alkylvinyl monomer and a cationic vinyl monomer, wherein the copolymer has an alkylvinyl monomer unit to cationic vinyl monomer unit ratio of from 1;

1 to 10;

1, the copolymer having a number average molecular weight of from 800 to 1,000,000.

2. The composition of claim 1 wherein the polyacrylate, polymethacrylate or polyfumarate polymer contains an amino or amido group from a copolymerized monomer or is obtained through a transesterification or amidation reaction of the polymer with an aminoalcohol or amine, respectively.

3. The composition of claim 1 further comprising an antioxidant.

4. The composition of claim 1 further comprising a metal deactivator.

5. The composition of claim 1 wherein the polymer as defined in paragraph (a) of claim 1 has a molecular weight of about 5,000 to 1,000,000.

6. The composition of claim 1 wherein the fuel oil is a jet fuel.

7. The composition of claim 1 wherein the fuel oil is a diesel fuel or a heating oil.

8. An additive comprising the combination of:

(a) a polymethacrylate, polyacrylate or polyfumarate polymer not prepared from a quaternary ammonium monomer and having a number average molecular weight of about 1,000 to 10,000,000; and

either

(b) a conductivity improver comprising (i) an olefin polysulfone and (ii) a polymeric polyamine reaction product of epichlorohydrin and an aliphatic primary monoamine or an N-aliphatic hydrocarbyl alkylene diamine, or the sulfonic acid salt of the polymeric polyamine reaction product, or

(c) a conductivity improver comprising a hydrocarbon soluble copolymer of an alkylvinyl monomer and a cationic vinyl monomer, wherein the copolymer has an alkylvinyl monomer unit to cationic vinyl monomer unit ratio of from about 1;

1 to about 10;

1, the copolymer having a number average molecular weight of from about 800 to about 1,000,000.

9. A method of improving the conductivity of a fuel oil composition comprising a fuel oil having an inherent conductivity of less than 10 pS/m, which method comprises incorporating into the fuel oil an additive essentially composed of:

(a) a polymethacrylate, polyacrylate or polyfumarate polymer not prepared from a quaternary ammonium monomer and having a number average molecular weight of 1,000 to 10,000,000; and

either

(b) a conductivity improver comprising (i) an olefin polysulfone and (ii) a polymeric polyamine reaction product of epichlorohydrin and an aliphatic primary monoamine or an N-aliphatic hydrocarbyl alkylene diamine, or the sulfonic acid salt of the polymeric polyamine reaction product, or

(c) a conductivity improver comprising a hydrocarbon soluble copolymer of an alkylvinyl monomer and a cationic vinyl monomer, wherein the copolymer has an alkylvinyl monomer unit to cationic vinyl monomer unit ratio of from 1;

1 to 10;

1, the copolymer having a number average molecular weight of from 800 to 1,000,000.