Base oil blend upgrading process with a diester base oil to yield improved cold flow properties and low noack
a technology of diester base oil and base oil, which is applied in the field of improving a starting base oil or starting base oil blend, can solve the problems that a small fraction of base oils manufactured today are able to meet these demanding specifications, and achieve the effect of improving cold flow properties and lowering noack
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example 1
[0096]This example serves to illustrate the base oil blends with and without the diesters of the present invention with the analytics presented in Table 3 below.
[0097]The diester-free base oil blend was prepared by mixing 82.67 wt % Yubase 4 and 17.33 wt % Yubase 6. The base oil component with diester was prepared by mixing 69.7 wt % Yubase 4, 13.8 wt % Yubase 6, and 16.5 wt % diester of Formula I wherein R1 and R2 are combined to have a carbon number of C12 and R3 and R4 are both C12. Both samples were submitted for standard base oil testing, including API gravity, viscosity at 40° C. and 100° C., Viscosity Index, pour point, cloud point, Noack volatility, cold cranking viscosity, and Bromine number.
TABLE 3Base Oil BlendExample 1Diester A, wt %016.5Yubase 4, wt %82.6769.7Yubase 6, wt %17.3313.8PropertiesAPI42.536.2Vis @ 100° C., cSt4.5154.523VI130132Pour point, ° C.−14−17Cloud point, ° C.−10−12Noack, wt %12.6512.46CCS @ −35° C., cP32252928Bromine number0.10.08
example 2
[0098]This example serves to illustrate the base oil blends with the diesters of the present invention, a single comparative without diester and a second comparative with a commercially available ester (i.e., Esterex A51) with the analytics presented in Table 4 below. Diester A is a diester of Formula I, wherein R1 and R2 are combined to have a carbon number of C12 and R3 and R4 are both C12. Diester B2 is a diester of Formula I, wherein R1 and R2 are combined to have a carbon number of C12 and R3 and R4 are both independently C6-C10. The examples in Table 3 were prepared in a similar manner as those of Example 1 herein.
TABLE 4Composition, wt %BOB02958BOB02959BOB02960BOB02961110RLV52.4359.3159.2559.16100R13.01220R34.5635.5535.5135.46Diester A5.14Diester B25.24Esterex A515.37BOB Properties, CalculatedKV100, centistokes4.9885.075.0445.103KV40, centistokes26.7627.0627.0327.46VI112115114115CCS, cP @ −25° C.2137210321202164CCS, cP @ −30° C.3929384038803961Noack volatility, % wt loss14.8B...
example 3
[0099]This example serves to illustrate the diesters prepared and their respective properties as presented in Table 5.
TABLE 5PropertiesStarting MaterialsCloudPourViscosityViscosityViscosityOxidatorNOACK,No.OlefinsFatty AcidsPointPoint(40° C.)(100° C.)IndexBNwt % lossAC14C12−28−27 19.5 cSt 4.76 cSt17626 hrs8.9BB1C14C6(high)-C10−69−6616.41 cSt 3.68 cSt10919.3 hrs —B2C14C6(low)-C10−60−6019.47 cSt4.191 cSt12026.25 hrs 9.1CC16C12−18−1924.44 cSt5.218 cSt15238 hrsEC18C6-C10−24−26 20.4 cSt 4.5 cSt13725.5DD1C16C6(high)-C10−51−5117.90 cSt4.015 cSt124——D2C16C6(low)-C10−51−5321.54 cSt4.545 cSt12826 hrs6.3
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