VISCOSITY IMPROVERS FOR SOLUTIONS COPOLYMER ETHYLENE PROPYLENE IN OIL SAE 10W-40

In this article we presented viscosity improvers for ethylene propylene copolymer solution in SAE 10W-40 oil using tree method. Viscosity indices are calculated from the measured viscosity at 40 and 100 oC using ASTM D 2270 and method graphically was using ASTM D 341. Viscosity improvers for solution oil were calculated using computer program created in Visual Basic. The viscosity-temperature coefficients for SAE 10W-40 oil were calculated from the measured viscosity at 40 and 100 oC.