HIGH TEMPERATURE RESISTANT POLYSULFONE INSULATION FOR PIPE
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United States of America Patent
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Issued Date -
Oct 23, 2014
app pub date -
Feb 28, 2014
filing date -
Feb 28, 2013
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Abandoned
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Abstract
A polymeric composition for insulating fluid and/or gas transport conduits, such as off-shore oil and gas pipelines operating at temperatures of about 200° C. or higher in water depths above 1,000 metres. The outer surface of the conduit is provided with at least one layer of solid or foam insulation comprising a high temperature resistant polysulfone having sulfone, ether and isopropylidene bridging groups, and/or a polyphenylsulfone or a polyethersulfone.
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