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Thiadiazole Technology: -Motor Oil Antiwear -Grease Extreme Pressure

Thiadiazole Technology: -Motor Oil Antiwear -Grease Extreme Pressure. Tom Karol, Ph.D. Research Director. 1,3,4-Thiadiazole Chemistry. Physical /Performance Properties Liquid Wear/EP performance equivalent to or better than heavy metal technology Environmentally friendly wear/EP agent

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Thiadiazole Technology: -Motor Oil Antiwear -Grease Extreme Pressure

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  1. Thiadiazole Technology: -Motor Oil Antiwear -Grease Extreme Pressure Tom Karol, Ph.D. Research Director

  2. 1,3,4-Thiadiazole Chemistry • Physical /Performance Properties • Liquid • Wear/EP performance equivalent to or better than heavy metal technology • Environmentally friendly wear/EP agent • Ashless • Biodegradable preferred • Cost effective • Commercially viable process

  3. Theory of Thiadiazoles as EP additives • Theory of simple thiadiazole coordination • Theory of dimer thiadiazole complexation • Theory of poly thiadiazole coordination

  4. Simple Thiadiazole Coordination

  5. SEQUENCE VD WEAR RESULTS conducted in the same prototype motor oil base formulation ____Wear____ Max. Avg. 0.08P ZnDTP fail fail 0.09P ZnDTP pass pass 0.1% thiadiazole technology plus 0.08P ZnDTP 0.0040 0.0029 Sequence VD limits 0.0080 0.0040

  6. Dimer Thiadiazole Complexation Bidentate Coordination

  7. Theory of Poly-Thiadiazole Coordination • Polydentate association

  8. Introduction of VANLUBE 972-Achieves polydentate properties through poly- thiadiazole coordination -Useful as a Grease Extreme Pressureadditive

  9. 2,5-Dimercapto-1,3,4-Thiadiazole Disulfide Dimer

  10. VANLUBE 972 Metal Coordination • Polydentate association

  11. IR ABSORPTION Major shifts in peaks are further evidence for the complex formation: Compound Absorption Peaks (cm-1) DMTD disulfide bis-dimer 1487, 1435, 1406, 1262, 1212 Triethylene glycol monobutyl ether 1460, 1351, 1297, 1248 Complex, 40% monosulfide bis-dimer 1510, 1433, 1350, 1244

  12. SATURATION POINT SOLVENT% DIMER THF 16.6 Acetone 2.4 Acetonitrile <0.04 Triethylene Glycol Monobutyl Ether 48 Triethylene Glycol Dimethyl Ether 56 Polyethylene Glycol (MW 400) 45

  13. Modified ASTM D 4048 Cu Corrosion DMK = dimethylketone (acetone)

  14. Effect of VANLUBE 972

  15. Modified ASTM D 4048 Copper Corrosion Test mass percent

  16. VANLUBE 972 and Fe Corrosion Inhibitors

  17. Biodegradation Study of VANLUBE 972:

  18. Biodegradation Study of VANLUBE 972: MaterialMass (mg)% Degradation VANLUBE 972 18.2 78.0 23.1 46.5 Sodium Benzoate 36.0 78.4 Canola Oil 30.1 38.5

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