Method to manufacture bisphenol A
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United States of America Patent
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Mar 30, 1993
Grant Date -
N/A
app pub date -
Nov 22, 1991
filing date -
Nov 24, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to a process for obtaining a high purity bisphenol from a post-reaction mixture resulting from the step of synthesis of phenol and acetone in the presence of a strong acid cation exhanger catalyst, by the way of crystallation and separation by distillation followed by recovery of bisphenol-A from the step of thermal catalytic decomposition of by product of the principal process technology in a multistage process.
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