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US 2003/0114716 A1Published application
Method of producing bisphenol-A
OwnerBarrie W. Jacksoninventor
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Abstract
Acetone and phenol are reacted over a strong acid catalyst in the presence of lower alcohol. The lower alcohol can be methanol, ethanol, n-propanol, iso-propanol, n-butanol, sec-butanol, tertiary-butanol and iso-butanol. For each mole of acetone one mole or more of lower alcohol is provided, and one to four moles of lower alcohol are preferred.
Claims19
A method of making BPA comprising
- reacting acetone and phenol over a strong acid catalyst in the presence of one or more lower alcohols selected from methanol, ethanol, n-propanol, iso-propanol, n-butanol, sec-butanol, tertiary-butanol and iso-butanol.
A method of making BPA comprising:
- reacting acetone and phenol over a strong acid catalyst in the presence of methanol, wherein at least one mole of methanol is present for each mole of acetone.
A method of making BPA comprising:
- adding at least one lower alcohol selected from methanol, ethanol, n-propanol, iso-propanol, n-butanol, sec-butanol, tertiary-butanol and iso-butanol to a condensation unit of an acetone-phenol BPA production process, wherein at least one mole of the lower alcohol is present for each mole of acetone in the condensation unit.
Dependencies are inferred from the claim text.