Method and catalyst for making bisphenol
AssigneeGeneral Electric Company
InventorsEric J. Pressman, Paul R. Willey
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Abstract
A sulfonated aromatic organic polymer, such as sulfonated polystyrene ion-exchange resin is provided having ionically bound N-alkylaminoorganomercaptan groups. The ion-exchange resin can be used to effect phenol-ketone condensation.
Claims9
An ion-exchange resin comprising sulfonated aromatic organic polymer having 4 to 40 percent of ionically bound aminoorganomercaptan groups of the formula ##STR4## based on the total moles of chemically combined sulfonated aromatic organic units and sulfonated aromatic organic units having ionically bound aminoorganomercaptan groups where R is a C.sub.(3-10) divalent organo radical, and R.sup.1 is a C.sub.(3-8) monovalent alkyl radical.
A method for making bisphenol which comprises reacting a ketone and a phenol in the presence of an effective amount of a cation-exchange resin comprising a sulfonated aromatic organic polymer having from about 4 to 40 mole percent of chemically combined sulfonated aromatic organic units with ionically bound N-alkylaminoorganomercapto radicals of the formula ##STR5## based on the total moles of chemically combined sulfonated aromatic organic units and sulfonated aromtic organic units having ionically bound aminoorganomercaptan groups where R is a C.sub.(3-10) divalent organo radical, and R.sup.1 is a C.sub.(3-8) monovalent alkyl radical.
Dependencies are inferred from the claim text.