Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Reexamination Certificate
2008-12-18
2009-12-15
Teskin, Fred M (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
C508S502000, C585S003000
Reexamination Certificate
active
07632900
ABSTRACT:
A lubricating oil suitable for use in α-olefin compressors and a high-pressure ethylene polymerization process is disclosed. The oil comprises a base fluid and a hindered C6-C30alkyl 4-hydroxybenzoate. The hindered C6-C30alkyl 4-hydroxybenzoate stabilizes the lubricating oil and does not interfere with the high-pressure α-olefin polymerization.
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Imfeld Stephen M.
Lake Andrew W.
Sherman, Jr. Robert L.
Equistar Chemicals LP
Schuchardt Jonathan L.
Teskin Fred M
Tyrell John
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