Synthetic polyolefin lubricant blends
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United States of America Patent
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Apr 14, 1992
Issued Date -
N/A
app pub date -
Dec 7, 1990
filing date -
Jun 23, 1988
priority date (Note) -
Expired
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Abstract
Synthetic lubricant blends exhibiting superior lubricant properties such as high viscosity index, including mixtures of oligomeric products of shape selective catalysis with other lubricants, such as high viscosity index poly-alpha-(.alpha.-)olefins lubricant basestock, conventional poly(.alpha.-olefin) and/or other liquid lubricant basestock material. Preferred lubricant mixtures comprise hydrogenated components: a) a low viscosity C.sub.20 -C.sub.60 lubricant range liquid comprising substantially linear hydrocarbon moietoes prepared by shape selective catalysis of lower olefin with medium pore acid zeolite catalyst to provide substantially linear liquid olefinic intermediates or C.sub.20.sup.+ lubricants, said lubricant range liquid having a kinematic viscosity of about 2-10 cS at 100.degree. C.; and b) at least one poly(.alpha.-olefin) having viscosity greater than 20 cS and viscosity index improvement properties.
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