Method for recycling polyethylene terephthalate (PET) beverage bottles by treating with carbon dioxide
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United States of America Patent
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-
Dec 17, 1991
Grant Date -
N/A
app pub date -
Oct 31, 1990
filing date -
Nov 8, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method for recycling polyethyleneterephthalate beverage bottles comprises the removal of the contaminants with the use of supercritical carbon dioxide. The recycled material is placed in an autoclave and treated with carbon dioxide at a temperature greater than 31.degree. C. and a pressure greater than 50 bars.
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