Oil additive compositions for internal combustion engines

• US 4,314,907 A
• Filed: 11/06/1979
• Issued: 02/09/1982
• Est. Priority Date: 11/07/1978
• Status: Expired due to Term

• Current Assignee: Produits Chimiques Ugine Kuhlmann
• Original Assignee: Pcuk Produits Chimiques Ugine Kuhlmann
• Inventors: Schoch, Elisabeth, Voisin, Alain, Eudeline, Jean-Paul, Defretin, Francis
• Primary Examiner(s): Howard, Jacqueline V.
• Application Number:
  US06/092,080
• Time in Patent Office: 826 Days
• Field of Search: 252/22, 252/29, 252/32.7 E, 252/25, 252/18, 44/51, 44/68, 44/66
• US Class Current: 508/112
• CPC Class Codes: C10M 141/10 at least one of them being an organic phosphorus-containing compound
• CPC Class Codes: C10M 2201/00 Inorganic compounds or elements as ingredients in lubricant compositions
• CPC Class Codes: C10M 2201/041 Carbon; Graphite; Carbon black
• CPC Class Codes: C10M 2201/042 halogenated, i.e. graphite fluoride
• CPC Class Codes: C10M 2201/061 Carbides; Hydrides; Nitrides
• CPC Class Codes: C10M 2201/16 Carbon dioxide
• CPC Class Codes: C10M 2201/18 Ammonia
• CPC Class Codes: C10M 2203/10 Petroleum or coal fractions, e.g. tars, solvents, bitumen
• CPC Class Codes: C10M 2203/108 Residual fractions, e.g. bright stocks
• CPC Class Codes: C10M 2209/103 Polyethers, i.e. containing di- or higher polyoxyalkylene groups
• CPC Class Codes: C10M 2209/108 etherified
• CPC Class Codes: C10M 2215/02 Amines, e.g. polyalkylene polyamines; Quaternary amines polyalkylene polyamines with eleven or more monomer units C10M2217/046
• CPC Class Codes: C10M 2215/04 having amino groups bound to acyclic or cycloaliphatic carbon atoms
• CPC Class Codes: C10M 2215/08 Amides
• CPC Class Codes: C10M 2215/082 containing hydroxyl groups; Alkoxylated derivatives
• CPC Class Codes: C10M 2215/26 Amines
• CPC Class Codes: C10M 2215/28 Amides; Imides
• CPC Class Codes: C10M 2223/045 Metal containing thio derivatives
• CPC Class Codes: C10N 2010/02 Groups 1 or 11
• CPC Class Codes: C10N 2010/04 Groups 2 or 12
• CPC Class Codes: C10N 2010/08 : Groups 4 or 14
• CPC Class Codes: C10N 2020/01 : Physico-chemical properties
• CPC Class Codes: C10N 2040/25 : Internal-combustion engines
• CPC Class Codes: C10N 2040/251 : Alcohol fueled engines
• CPC Class Codes: C10N 2040/255 : Gasoline engines
• CPC Class Codes: C10N 2040/28 : Rotary engines

Abstract

Oil additive compositions for internal combustion engines, containing at least one dithiophosphate, at least one fatty amide and a fluorographite CF_x, where x is between about 0.6 and 1, and oils containing such compositions.

Claims

1. An oil additive composition for internal combustion engines consisting essentially of at least one metal dithiophosphate, at least one fatty amide, where the fatty amide has the formula:

space="preserve" listing-type="equation">R--CO--NH--R

or

space="preserve" listing-type="equation">R--CO--[NR'"'"'--R"--NR'"'"']--CO--R

where R is a saturated or unsaturated hydrocarbon group having from 8 to 36 carbon atoms, R'"'"' is hydrogen or the group COR and R" is an alkylene group having from 2 to 6 carbon atoms, and a fluorographite CF_x, where x is between about 0.6 and 1.

2. Compositions according to claim 1, where the dithiophosphate is zinc dithiophosphate.

3. Compositions according to claim 1 where the fatty amide is an oleic acid amide.

4. Compositions according to one of claims 1 or 3 where the fatty amide is produced in situ in the oil by adding a mixture of fatty acid and amine or the corresponding salt.

5. Compositions according to one of claims 1 or 3 where in the fluorographite CF_x used, x is between about 0.8 and 1.

6. Compositions according to one of claims 1 or 2 where the fluorographite used is microdispersed in a dispersing medium miscible with oils for internal combustion engines.

7. Compositions according to claim 6 where the fluorographite used is microdispersed in a polyglycol ether of 100 centistokes viscosity at 40°

C.

8. Oils for internal combustion engines comprising a base oil having an additive composition according to one of claims 1 or 2 admixed therein.

9. Oils, according to claim 8, containing from 0.05% to 0.2% by weight dithiophosphate, expressed in cations of dithiophosphate.

10. Oils, according to claim 8, containing from 0.05% to 1% by weight of a fatty amide or mixture of fatty acid and amine or the corresponding salt.

11. Oils, according to claim 8, containing from 0.01% to 1% by weight CF_x where x is between about 0.6 and 1.