Method for producing diarylmethane and its derivatives
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United States of America Patent
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Issued Date -
Jan 16, 2003
app pub date -
Jun 6, 2002
filing date -
Jun 20, 2001
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The method for producing diarylmethane and its derivatives by condensation of an aromatic hydrocarbon and a methylenating agent is proposed, in which the aromatic hydrocarbon having at least one hydrogen atom that is directly connected to its benzene ring and a methylenating agent such as formalin are reacted in a specific temperature range in the presence of a heteropoly-acid of the condensation product of at least one oxide selected from the group of Mo, W, Nb and V with an oxyacid of P, Si, As or Ge.
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