abstract |
The present invention provides a kind of polymer and the medical composition comprising it.An embodiment according to the present invention, the polymer may be, for example, modified polyvinyl alcohol, include the first repetitive unit, the second repetitive unit and the third repeating unit, wherein first repetitive unit be Second repetitive unit is Wherein R 1 It is C 1‑6 Alkyl;And the third repeating unit is Wherein X is Or And Y is hydrophilic macromolecule group. |