| abstract |
The present invention relates to (a) the general formula (I) And (b) a hard segment that is a reaction product of a diisocyanate and a linear bifunctional chain extender that is greater than 0% and less than 40% by weight; Stable polyurethanes or polyurethaneureas, processes for their preparation and their use in biological materials, devices, articles or implants. [Selection figure] None |