POLYSULFONE CHLOROMETHYLATION PROCESS

摘要

The invention relates to a polysulfone chloromethylation process for producing a functionalized polymer with pendant chloromethylen groups, consisting in treating the polysulfone chloroform solution in a concentration of 2...5% at 40°C with a reaction agent obtained in situ from paraformaldehyde and trimethylchlorosilane, in the presence of butter of tin as a catalyst. Soluble polysulfones with a high functionalization degree are obtained.