Patent ID: 6040415
Filing Date: 2000-03-21
Classification: A61L,C08G

Abstract:
A biocompatible polyurethane or polyurethane urea having side chains which comprise a phosphorylcholine structure represented by the formula (1): ##STR21## wherein R.sup.1 is C.sub.1-20 alkyl, C.sub.6-12 aryl, C.sub.7-20 aralkyl, or a group of the formula:R.sup.4 --(A).sub.n --wherein A is C.sub.2-10 oxyalkylene, and (A).sub.n is constituted of one kind of oxyalkylene groups or of two or more kinds of oxyalkylene groups linked together in blocks or at random; n is an integer of 1 to 30; and R.sup.4 is C.sub.1-20 alkyl, C.sub.6-12 aryl or C.sub.7-20 aralkyl; and R.sup.2 and R.sup.3 each represent C.sub.1-20 alkyl, C.sub.6-12 aryl or C.sub.7-20 aralyky, and are the same or different.