Method of purifying arylphenones
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United States of America Patent
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Jul 7, 1998
Grant Date -
N/A
app pub date -
Oct 17, 1997
filing date -
Oct 17, 1997
priority date (Note) -
Expired
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Abstract
Hydroxy and alkyloxy benzophenones, also known as arylphenones, are efficiently and economically purified by contacting them with inorganic phosphorous compounds in the presence of a non-polar solvent. Best results are obtained when the arylphenone is then treated with an activated carbon and/or activated clay.
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