| abstract |
The invention includes new metal cations or H with at least sulfinate groups (P- (SO¶2¶) ¶n¶X, X = 1- (n = 1), 2- (n = 2) or 3- (n = 3) · + · Or ammonium ion NR¶4¶ · + · with R = alkyl, aryl, H) containing polymers or oligomers, which are obtained by complete or partial reduction of at least SO¶2¶Y groups (Y = F, Cl, Br, I, OR, NR¶2¶ (R = alkyl and / or aryl and / or H), N-imidazolyl, N-pyrazolyl) containing polymers or oligomers using suitable reducing agents in suspension or in solution. |