Chemistry of hydrocarbon compounds – Unsaturated compound synthesis – By addition of entire unsaturated molecules – e.g.,...
Reexamination Certificate
2011-07-19
2011-07-19
Caldarola, Glenn A (Department: 1771)
Chemistry of hydrocarbon compounds
Unsaturated compound synthesis
By addition of entire unsaturated molecules, e.g.,...
C585S502000, C585S510000, C585S511000, C585S513000, C585S520000, C585S521000, C585S522000, C585S324000, C585S326000, C585S329000
Reexamination Certificate
active
07982085
ABSTRACT:
The present invention relates to an in-line method for generating comonomer from monomer, such as ethylene. The comonomer generated is directly transported, without isolation or storage, to a polyethylene polymerization reactor. The in-line method includes the steps of providing an in-line comonomer synthesis reactor and a downstream gas/liquid phase separator prior to the polymerization reactor; feeding ethylene monomer and a catalyst in a solvent and/or diluent to the comonomer synthesis reactor; reacting the ethylene monomer and the catalyst in solvent and/or diluent under reaction conditions to produce an effluent stream including ethylene monomer and comonomer; passing the effluent stream from the comonomer synthesis reactor to the downstream gas/liquid phase separator to separate a gas stream from a bottom stream, wherein the gas stream is a mixture of ethylene monomer and comonomer; and passing the gas stream to the polymerization reactor to provide the necessary comonomer input.
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Buchanan John Scott
Lattner James R.
Shaffer Timothy D.
Walzer John F.
Caldarola Glenn A
Etherton Bradley
ExxonMobil Chemical Patents Inc.
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