Preparation of sulphonated polyketones

Details Preparation of sulphonated polyketones Preparation of sulphonated polyketones

C - Chemistry, Metallurgy

08

G

402/7.1

C08G 67/02 (2006.01)

Patent

CA 2025147

Case 7303(2) ABSTRACT OF THE DISCLOSURE PREPARATION OF SULPHONATED POLYKETONES Sulphonated polyketones are prepared by reacting a linear alternating copolymer of carbon monoxide and one or more olefins (polyketone) with a sulphonating agent (eg chlorosulphoric acid) in a solvent (eg dichloromethane) at a temperature in the range -20 to +40°C. A molar excess of sulphonating agent is preferably used. The sulphonated polyketone produced contains one or more types of unit of formula -[COC(R1)2C(R1)2]- wherein the R1 groups are independently H, C1 to C10 alkyl or SO3H with the proviso that at least one R1 group is SO3H.

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