Method for purifying caprolactam from waste containing polyamide using UV radiation
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United States of America Patent
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Oct 31, 2006
Grant Date -
Mar 17, 2005
app pub date -
Jul 23, 2004
filing date -
Jul 23, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to a method for the continuous production of caprolactam from waste containing polyamide, comprising a) depolymerisation of the waste containing polyamide, whereby a caprolactam raw material and, where applicable, a flow containing secondary constituents or additives is obtained, and b) irradiation of the caprolactam raw material with UV radiation.
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