Solid anti-friction devices – materials therefor – lubricant or se – Lubricants or separants for moving solid surfaces and... – Solid hydrocarbon polymer
Reexamination Certificate
2006-10-31
2006-10-31
McAvoy, Ellen M. (Department: 1764)
Solid anti-friction devices, materials therefor, lubricant or se
Lubricants or separants for moving solid surfaces and...
Solid hydrocarbon polymer
C526S160000, C526S348200, C526S348300, C526S348500, C526S348600, C526S943000, C585S007000, C585S010000, C585S012000, C585S255000
Reexamination Certificate
active
07129197
ABSTRACT:
One or more oligomers of an olefin are prepared in the presence of a single-site catalyst. Preferably, the olefin is an α-olefin, and the oligomers are a poly-alpha-olefin (PAO). The PAO so prepared is completely or substantially free of tertiary hydrogen resulting from isomerization. Consequently, the PAO possesses improved biodegradability, improved oxidation resistance, and/or a relatively higher viscosity index. The PAO has many useful applications, such as a component of a lubricant.
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International Search Report, Jan. 31, 2003.
Heilman William J.
Song Wei
McAvoy Ellen M.
Shell Oil Company
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