Process for producing a strong-acid cation exchange resin
AssigneeDow Global Technologies LLC
InventorsMihail Paliuras, Damian M. Feord, Johann-Wilhelm Frey
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Abstract
A strong-acid cation exchange resin in acid form is contacted with an alkylcarbamoyl alkylthioester in the presence of water for producing a strong-acid cation exchange resin comprising a plurality of acid groups being partially neutralized with a mercaptoalkylamine. The produced partially neutralized cation exchange resin is useful as a catalyst in a process of producing a bisphenol by reaction of a phenolic compound with a carbonyl compound.
Claims10
A process for producing a strong-acid cation exchange resin comprising a plurality of acid groups being partially neutralized with a mercaptoalkylamine, wherein a strong-acid cation exchange resin in acid form is contacted with an alkylcarbamoyl alkylthioester of the formula I
- R1—C(O)—NH—R2—S—C(O)—R3 (I)
- wherein
- R1 and R3 are each independently a C1-4-alkyl group, and
- R2 is a C2-6-alkylene group
- in the presence of water.
Dependencies are inferred from the claim text.