Catalyst promotor for the manufacture of polyphenols
AssigneeResolution Performance Products LLC
InventorsDavid Palmer, Pui Kwan Wong
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Abstract
A process for the manufacture of a polyphenol compound such as bisphenol-A by introducing into a reaction zone a phenolic compound reactant, a carbonyl compound reactant, and a catalyst promoter comprising a dithioketal compound, and reacting the ingredients within the reaction zone in the presence of an acid catalyst.
Claims55
A condensation process comprising introducing into a reaction zone ingredients comprising a phenolic compound reactant, a carbonyl compound reactant, and a dithioketal catalyst promoter composition, and condensing the phenolic compound and the carbonyl compound in the presence of an acid catalyst.
A process for the manufacture of a polyphenol compound comprising introducing into a reaction zone ingredients comprising a phenolic compound reactant, a carbonyl compound reactant, and a catalyst promoter composition comprising a dithioketal compound, and reacting the ingredients within the reaction zone in the presence of an acid catalyst.
A synthetic method comprising adding together a phenolic compound, a carbonyl compound, and a dithioketal catalyst promoter, hydrolyzing the dithioketal catalyst promoter to its dissociation products, and condensing the phenolic compound and the carbonyl compound in the presence of an acid catalyst and said dissociation products.
Dependencies are inferred from the claim text.