thiadiazole technology: -motor oil antiwear -grease extreme pressure
DESCRIPTION
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 - PowerPoint PPT PresentationTRANSCRIPT
Thiadiazole Technology: Thiadiazole Technology: -Motor Oil Antiwear-Motor Oil Antiwear-Grease Extreme Pressure-Grease Extreme Pressure
Tom Karol, Ph.D.
Research Director
1,3,4-Thiadiazole Chemistry1,3,4-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
Theory of Thiadiazoles as Theory of Thiadiazoles as EP additivesEP additives
Theory of simple thiadiazole coordination
Theory of dimer thiadiazole complexation
Theory of poly thiadiazole coordination
Simple Thiadiazole CoordinationSimple Thiadiazole Coordination
SEQUENCE VD WEAR RESULTSSEQUENCE VD WEAR RESULTSconducted in the same prototype conducted in the same prototype motor oil base formulationmotor 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 0.0029Sequence VD limits 0.0080 0.0040
Dimer Thiadiazole ComplexationDimer Thiadiazole Complexation
Bidentate Coordination
Theory of Poly-Thiadiazole Theory of Poly-Thiadiazole CoordinationCoordinationPolydentate association
Introduction ofIntroduction of VANLUBE 972 VANLUBE 972
-Achieves polydentate -Achieves polydentate propertiesproperties through poly-through poly-thiadiazole coordinationthiadiazole coordination
-Useful as a Grease Extreme -Useful as a Grease Extreme PressurePressure additiveadditive
2,5-Dimercapto-1,3,4-2,5-Dimercapto-1,3,4-Thiadiazole Disulfide DimerThiadiazole Disulfide Dimer
SS
NN
S S SS
NNH H
VANLUBE 972 VANLUBE 972 Metal CoordinationMetal CoordinationPolydentate association
IR ABSORPTIONIR ABSORPTION
Major shifts in peaks are further evidence for the complex formation:
Compound Absorption Peaks (cm-1)DMTD disulfide bis-dimer1487, 1435, 1406, 1262, 1212Triethylene glycol monobutyl ether
1460, 1351, 1297, 1248Complex, 40% monosulfide bis-dimer1510, 1433, 1350, 1244
SATURATION POINTSATURATION POINT
SOLVENT % DIMERTHF 16.6
Acetone 2.4
Acetonitrile <0.04
Triethylene Glycol Monobutyl Ether 48
Triethylene Glycol Dimethyl Ether 56
Polyethylene Glycol (MW 400) 45
Modified ASTM D 4048 Cu Corrosion Modified ASTM D 4048 Cu Corrosion
24h @ 100°CVANLUBE 972
mass percent1 2 3 5
Li-12 OH Grease 99 98 97 95Heptane and towel rub
Wt Change, mg +5.8 +8.4 +14.8 +22.1
DMK Towel Rubbing,
Wt Change, mg +1.9 +0.1 +1.6 +5.8
Rating 2e 2e 2e 2e
DMK = dimethylketone (acetone)
Effect of VANLUBE 972Effect of VANLUBE 972
VANLUBE 972 1%Molybdenum Dithiophosphate, mass 1% 1%Li-12OH Stearate Grease, mass 99% 98%Copper Strip Weight Before, g 25.4175 27.0688
Weight Change, mg -2.1 +4.0Heptane & Paper Towel,
Weight Change, mg-2.8 +4.2
Acetone & Paper Towel,
Weight Change, mg-3.1 +3.2
Rating, ASTM D 4048 4a 2e
Modified ASTM D 4048 Modified ASTM D 4048 Copper Corrosion TestCopper Corrosion Testmass percent
VANLUBE 972 and VANLUBE 972 and
Fe Corrosion InhibitorsFe Corrosion Inhibitors Grease VL 972
Mass %Timken, lb 4- Ball
Weld,kgf 4-Ball Wear,
mm
Aluminum Complex #2 0.00 - -
1.00 40 - 0.50, 0.49, 0.43
1.25 Failed 50 - -
1.50 Failed 50 - -
1.75 60 315 0.96, 0.71, 0.73
2.00 80 - -
Aluminum Complex #2 With 0.5% OD-9316
1.00 Failed 50 315 0.60, 0.67
1.75 60 - 0.60, 0.67
Aluminum Complex #2 With 1.0% OD-9316
1.00 50 250 0.63, 0.67
Biodegradation Biodegradation Study of VANLUBE 972:Study of VANLUBE 972:
CO2 + Ba(OH)2
BaCO3+ H2O
Biodegradation Study of Biodegradation Study of
VANLUBE 972:VANLUBE 972:
Material Mass (mg) % Degradation
VANLUBE 972 18.2 78.0
23.1 46.5
Sodium Benzoate 36.0 78.4
Canola Oil 30.1 38.5