申请人:MITSUI TOATSU CHEMICALS, Inc.
公开号:EP0812868A1
公开(公告)日:1997-12-17
The invention provides a biodegradable aliphatic polyester elastomer which has rubber-like elasticity, hardness of 80 or less in accordance with ASTM D 676-58T, and elastic modulus from 1 × 105 Pa to 1 × 108 Pa at 25°C, and decomposes with ease in the natural environment, under composting conditions or under hydrolysis conditions. The biodegradable aliphatic elastomer of the invention can be obtained by crosslinking aliphatic polyester containing aliphatic unsaturated polybasic acid as a polymer constituting ingredient and having a weight average molecular weight of 15,000 or more.
本发明提供了一种可生物降解的脂肪族聚酯弹性体,该弹性体具有类似橡胶的弹性,按照ASTM D 676-58T标准硬度为80或以下,在25℃时弹性模量为1×105 Pa至1×108 Pa,在自然环境中、堆肥条件下或水解条件下容易分解。本发明的可生物降解脂肪族弹性体可通过交联脂肪族聚酯获得,脂肪族聚酯含有脂肪族不饱和聚巴斯酸作为聚合物构成成分,其重量平均分子量为 15 000 或以上。