Petroleum hydrocarbon binder with reduced polycyclic aromatic hydrocarbon content
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United States of America Patent
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Jun 27, 2006
Grant Date -
May 20, 2004
app pub date -
Nov 14, 2002
filing date -
Nov 14, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A binder pitch material includes a petroleum pitch and asphalt fraction obtained from petroleum crude oil and has a significantly lower polycyclic aromatic hydrocarbon composition than a coal tar pitch having a like softening point. The pitch material is useful as a binder material for various applications such as clay pigeons.
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