BISEIBUTSUBUNKAISEIPURASUCHITSUKUSEIKEIBUTSUOYOBISONOSEIZOHOHO

摘要

A biodegradable plastic composition is disclosed which includes a polycaprolactone and a poly- beta -hydroxybutyrate. Disclosed also is a biodegradable plastic shaped body formed of such a composition. The shaped body may be produced by melt-mixing a blend of a polycaprolactone, a poly- beta -hydroxybutyrate and a copolymerization catalyst to copolymerize a portion of the polycaprolactone with a portion of the poly- beta -hydroxybutyrate, thereby to obtain a caprolactone/ beta -hydroxybutyric acid copolymer-containing melt, which is subsequently shaped into a desired form.