Diesel fuel detergent additive

• US 5,039,307 A
• Filed: 10/01/1990
• Issued: 08/13/1991
• Est. Priority Date: 10/01/1990
• Status: Expired due to Term

• Current Assignee: Texaco Incorporated (Chevron Corp.)
• Original Assignee: Texaco Incorporated (Chevron Corp.)
• Inventors: Virk, Kashmir S., Nalesnik, Theodore E., Benfaremo, Nicholas, Herbstman, Sheldon
• Primary Examiner(s): Howard, Jacqueline V.
• Application Number:
  US07/590,742
• Time in Patent Office: 316 Days
• Field of Search: 44/347, 44/348
• US Class Current: 44/347
• CPC Class Codes: C10L 1/22 containing nitrogen
• 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 1/2387 Polyoxyalkyleneamines (poly)oxyalkylene amines and derivatives thereof (substituted by a macromolecular group containing 30C) C10L1/221 takes precedence
• CPC Class Codes: F02B 3/06 with compression ignition compression ignition engines using air or gas for blowing fuel into compressed air in cylinder F02B13/02

Abstract

A diesel fuel composition comprising:

(a) a major portion of a diesel fuel, and

(b) a minor amount, as a diesel fuel injector detergent additive, of a Mannich coupled product of bis-polyisobutylene succinimide of an amine, prepared by:

(i) reacting an alkenyl succinimide acid anhydride with an amine to form a bis-succinimide;

(ii) treating the bis-succinimide with nonylphenol in the presence of an aldehyde to form a Mannich phenol coupled bis-succinimide product; and

(iii) recovering the product Mannich phenol coupled bis-succinimide.

Claims

1. A diesel fuel composition comprising:

(a) a major portion of a diesel fuel, and

(b) a minor amount, as a diesel fuel injector detergent additive, of a Mannich coupled product of bis-polyisobutylene succinimide of an amine, prepared by;

(i) reacting an alkenyl succinimide acid anhydride with an amine to form a bis-succinimide;

(ii) treating the bis-succinimide with nonylphenol in the presence of an aldehyde to form a Mannich phenol coupled bis-succinimide product; and

(iii) recovering the product Mannich phenol coupled bis-succinimide.

2. The diesel fuel composition of claim 1, wherein said amine is selected from the group consisting of pentaethylene hexamine, diethylenetriamine, triethylenetetramine, and tetraethylene pentamine.

3. The diesel fuel composition of claim 1, wherein said alkenyl succinic acid anhydride has polyisobutenyl groups with a molecular weight ranging from about 100 to about 3000.

4. The diesel fuel composition of claim 2, wherein said amine is pentaethylenehexamine.

5. The diesel fuel composition of 3, wherein the molecular weight of the polyisobutenyl group of said succinic acid anhydride is about 1300.