Task: Translation
Input (Czech): Polyurethanov  prepolymery obsahuj c  alkoxysilanov  a hydantoinov  skupiny, zp sob jejich v²roby a jejich pou it  jako pojiv pro polyurethanov  t snic  materi ly.\
Output (English): Polyurethane prepolymers contain alkoxysilanes and hydantoin groups, a process for their preparation and their use as binders for polyurethane materials.