Novel polymer and its resin composition

Abstract

Abstract PURPOSE:To provide a poly-D-lactide having a specific molecular weight and improved physical properties, and useful as a decomposable and absorbable material and an agricultural culture film, etc. CONSTITUTION:D-Lactic acid is synthesized by fermentation, and is esterified to obtain a D-oligomer. The D-lactic acid oligomer is thermally decomposed to obtain D-lactide, which is subjected to the ring-opening polymerization at about 130-220 deg.C in the presence of a catalyst (e.g. tin octoate, lauryl alcohol, etc.) to obtain a poly-D-lactide having a molecular weight of 2,000-600,000. The objective composition is produced by compounding 1-99pts.wt. of a poly-L-lactide having a molecular weight of 2,000-600,000 with 99-1pts.wt. of a poly-D-lactide having a molecular weight of 2,000-600,000. USE:Absorbable suture, bone plate, artificial tendon, artificial ligament, artificial blood vessel, etc.

Inventors

• 👤 Yoshito Ikada
• 👤 義人 筏
• 👤 Shiyoukiyuu Gen
• 👤 丞烋 玄
• 👤 Jiyamushidei Hosuroo
• 👤 ホスロー・ジヤムシデイ

Bibliographic Details