abstract |
The present invention relates to a hydroxyalkyl starch (HAS) derivative of formula (I) wherein F1 is a functional group comprising the group —NR′—, with R′ being H or alkyl; L is a spacer bridging F1 and S; wherein HAS′ is the remainder of the HAS molecule, R b and R c are —[(CR 1 R 2 ) m O] n —H and are the same or different from each other; R a is —[(CR 1 R 2 ) m O] n —H with HAS′ being the remainder of the hydroxyalkyl starch molecule, or R a is HAS″ with HAS′ and HAS″ together being the remainder of the hydroxyalkyl starch molecule; R 1 and R 2 are independently hydrogen or an alkyl group having from 1 to 4 carbon atoms, m is 2 to 4, wherein R 1 and R 2 are the same or different from each other in the m groups CR 1 R 2 ; n is from 0 to 6. |