Lewatit® K 1221 is a strongly acidic, gel-type, polymer-based resin in spherical bead form with sulfonic acid groups and is ideally suited for processing liquid organic media. It has a low degree of crosslinking, good mechanical stability and gives optimum performance in polar media. Therefore, it is especially suitable for use in the following applications:- Bisphenol-A production
- Condensations and esterifications of small polar molecules
- Hydrolysis of ethers and esters
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