Additives for fuels and lubricants

• US 5,552,069 A
• Filed: 05/25/1995
• Issued: 09/03/1996
• Est. Priority Date: 03/25/1994
• Status: Expired due to Fees

• Current Assignee: Mobil Oil Corporation (Exxon Mobil Corporation)
• Original Assignee: Mobil Oil Corporation (Exxon Mobil Corporation)
• Inventors: Carey, James T., Hiebert, John, Horodysky, Andrew G., Avery, Noyes L., Axelrod, Joan C.
• Primary Examiner(s): Howard, Jacqueline V.
• Application Number:
  US08/450,826
• Time in Patent Office: 467 Days
• Field of Search: 252/47, 252/47.5, 252/50
• US Class Current: 508/229
• CPC Class Codes: C10L 1/2475 obtained otherwise than by reactions only involving unsaturated carbon to carbon bonds
• CPC Class Codes: C10L 1/2493 compounds of uncertain formula; reactions of organic compounds (hydrocarbons, acids, esters) with sulfur or sulfur containing compounds
• CPC Class Codes: C10L 10/04 for minimising corrosion or incrustation
• CPC Class Codes: C10L 10/06 for facilitating soot removal
• CPC Class Codes: C10L 10/08 for improving lubricity; for reducing wear
• CPC Class Codes: C10M 129/24 Aldehydes; Ketones
• CPC Class Codes: C10M 133/54 Amines
• CPC Class Codes: C10M 135/32 Heterocyclic sulfur, selenium or tellurium compounds
• CPC Class Codes: C10M 135/36 the ring containing sulfur and carbon with nitrogen or oxygen
• CPC Class Codes: C10M 159/12 Reaction products
• CPC Class Codes: C10M 2207/08 Aldehydes; Ketones
• CPC Class Codes: C10M 2215/26 Amines
• CPC Class Codes: C10M 2219/09 Heterocyclic compounds containing no sulfur, selenium or tellurium compounds in the ring
• CPC Class Codes: C10M 2219/10 Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring
• CPC Class Codes: C10M 2219/102 containing sulfur and carbon only in the ring
• CPC Class Codes: C10M 2219/104 containing sulfur and carbon with nitrogen or oxygen in the ring
• CPC Class Codes: C10M 2219/106 Thiadiazoles
• CPC Class Codes: C10M 2219/108 Phenothiazine
• CPC Class Codes: C10M 2227/00 Organic non-macromolecular compounds containing atoms of elements not provided for in groups C10M2203/00, C10M2207/00, C10M2211/00, C10M2215/00, C10M2219/00 or C10M2223/00 as ingredients in lubricant compositions

Abstract

Polyalkylene amine coupled heterocyclic compounds are effective multifunctional additives, providing cleanliness to fuels and lubricants as well as anti-wear, friction-modifying, thermal and oxidative stabilizing properties. The beneficial effects of the product of the instant invention apparently result from an internal synergism between the polyalkylene amine groups and the heterocyclic groups.

Claims

1. A lubricant composition comprising a lubricating oil or a grease prepared therefrom and an effective amount, sufficient to enhance cleanliness, provide stability at high temperatures, retard wear, and inhibit corrosion in an engine, of a reaction product obtained by reacting a (1) polyalkylene amine which is at least 30 carbons in length with (2) a carbonyl linking group and (3) a heterocyclic compound having both sulfur and nitrogen molecules at a temperature in the range from 50°

C. to 250°

C. and at a pressure from subatmospheric to about 500 psig using a ratio of polyalkylene to carbonyl linking group to heterocyclic compound in a range from 0.1;

10;

0.1 to 10;

0.1;

10.

2. The composition of claim 1, wherein the polyalkylene amine is polyisobutylene amine wherein the polyisobutylene amine is derived from polyisobutylene molecules of which at least 70% have a terminal vinyl group.

3. The composition of claim 2, wherein the polyisobutyleneamine is derived from polyisobutylene molecules of which at least 80% have a terminal vinyl group.

4. The composition of claim 1, wherein the amount of reaction product present is in the range from 0.1 to 5.0 wt %.

5. The composition of claim 1, wherein at least one compound selected from the group consisting of ammonia, ethylenediamine, diethylenetriamine, triethylenetetramine, tetraethylenepentamine, piperazines, hexamethylenediamine, hydroxyalkyl ethylenediamines, and hydroxyalkyl teraethylenetetramines is to be incorporated into the polyalkylene amine.

6. The composition of claim 1, wherein the carbonyl linking group is an aldehyde.

7. The composition of claim 1, wherein the lubricating oil is selected from the group consisting of mineral oils, synthetic oils or mixtures thereof.

8. A lubricant composition comprising a lubricating oil or a grease prepared therefrom and an effective amount, sufficient to enhance cleanliness, provide stability at high temperatures, retard wear, and inhibit corrosion in an engine, of a reaction product obtained by reacting a (1) polyisobutyleneamine which is derived from polyisobutylene molecules of which at least 70% have a terminal vinyl group (2) paraformaldehyde and (3) 2,5-dimercapto-1,3,4 thiadiazole.