Two-stage process and system for forming high viscosity polyalphaolefins
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United States of America Patent
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Dec 20, 2011
Grant Date -
Mar 3, 2011
app pub date -
Aug 28, 2009
filing date -
Aug 28, 2009
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Abstract
A final polymer product is formed using a two-stage process and system. In the first stage, a catalyst system is used to polymerize an alpha-olefin monomer to form an effluent. In the second stage, additional alpha-olefin monomer is supplied and is polymerized in the presence of the effluent from the first stage. The second stage produces the final polymer product, which may have a lower molecular weight and viscosity than the polymer formed in the first stage. The final polymer product may be used as a base stock for lubricant compositions.
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