LEWATIT® K 1221

The Lewatit® K 1221 is a strongly acidic, gel-type, polymer-based resin in spherical bead form with sulfonic acid groups and is ideally suited as a heterogeneous catalyst for organic reactions.

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