Sulphonation process

Details Sulphonation process Sulphonation process

C - Chemistry, Metallurgy

08

F

C08F 8/36 (2006.01)

Patent

CA 2056550

SULPHONATION PROCESS ABSTRACT OF THE INVENTION Crosslinked styrenic polymers may be sulphonated in a controlled manner in an organic solvent at elevated temperature using SO3 in the presence of a trialkyl phosphate. The process does not introduce further crosslinking into the polymer permitting it to have an extremely high water uptake. The resulting polymer is useful as a hydrogel. -1-

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