Cryogenic comminution of rubber
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United States of America Patent
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-
Dec 2, 2003
Grant Date -
Dec 19, 2002
app pub date -
Apr 23, 2002
filing date -
Apr 27, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Rubber chips are immersed in a coolant to cool the chips to a the temperature in the range of -90 degrees to -110 degrees Celsius. The coolant contains alcohol such as n-butyl alcohol, methanol, pentane and is cooled by nitrogen. The cooled chips are then comminuted to a powder in the range of 10 mesh to 100 mesh ASTM in size.
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