This invention has the configuration unit which is shown with formula (i), being poriuretanurea where the copolymer unit of polyethylene oxide or polypropylene oxide the terminal is not done at least at one, regards poriuretanurea which can use for the production of especially sutento coat. In addition as for this invention, it regards the backing material which possesses the undercoat which was made from poriuretanurea of this invention. This invention becomes, is not included, furthermore, including the active ingredient, at least one which was made from poriuretanurea of this invention formation, or the active ingredient including one which was made from poriuretanurea of this invention formation at least, regards the canning structure which becomes. This invention lastly, being canning manner of the backing material, regards the manner which at least applies one which was made from poriuretanurea of this invention formation to the backing material.本発明は、式(I)で示される構成単位を有し、ポリエチレンオキシドおよびポリプロピレンオキシドのコポリマー単位の少なくとも1つで終端されていないポリウレタンウレアであって、特にステント被膜の製造に使用することができるポリウレタンウレアに関する。本発明はまた、本発明のポリウレタンウレアから作られた下塗を有する基材に関する。本発明は更に、有効成分を含んでなり、本発明のポリウレタンウレアから作られた少なくとも1つの層、および有効成分を含まず、本発明のポリウレタンウレアから作られた少なくとも1つの層を含んでなる被覆構造物に関する。本発明は最後に、基材の被覆方法であって、本発明のポリウレタンウレアから作られた少なくとも1つの層を基材に適用する方法に関する。
