| 摘要 |
The present application provides a biodegradable polyurethane elastomer comprising soft segments A and B, and hard segment C, wherein: the segment A is formed from poly(beta-hydroxybutyrate) diol and optional one or more components selected from the group consisting of poly(lactic acid)diol, polyglycolide diol, polylactide diol, polycaprolactone(PCL) diol and poly(lactic/glycolic acid) diol; the segment B is formed from polyethylene glycol; the segment C is formed from one or more diisocyanate selected from the group consisting of 1,6-hexamthylene diisocyanate, isophorone diisocyanate and lysine diisocyanate; and the molar ratio of these segments are: (A+B)/C=0.8 to 1.2; A/B=0.1 to 10; and the amount of the poly-beta-hydroxybutyrate units in the segment A is 10-100 mol %.
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