Biodegradable resin composition

生分解性樹脂組成物

Abstract

PROBLEM TO BE SOLVED: To obtain a resin composition reduced in cost, having a high rate of biodegradation and being controllable in a rate of biodegradation by mixing an aliphatic polyester resin with a specified amount of a vegetable fiber and an alkaline earth metal oxide. SOLUTION: This composition comprises 99-79 pts.wt. aliphatic polyester resin, 1-30 pts.wt. vegetable fiber and an alkaline earth metal oxide. The alkaline earth metal oxide is exemplified by BeO, MgO, CaO, SrO or BaO. The amount of the alkaline earth metal oxide added is rather larger on the basis of the amount stoichiometrically equivalent to the moisture which the vegetable fiber carries into the composition when the molding temperature is high or when the required rate of biodegradation is high. It is rather smaller when the molding temperature is low or when the required rate of biodegradation is low. The vegetable fiber is most desirably one derived from coconut husks. COPYRIGHT: (C)1998,JPO
(57)【要約】 【課題】従来の生分解性プラスチックに比べて低コスト で、また生分解速度が速く、しかもその生分解速度の制 御が簡便に行える生分解性樹脂組成物を提供すること。 【解決手段】脂肪族ポリエステル樹脂99〜70重量 部、植物繊維1〜30重量部を含み、しかもアルカリ土 類金属酸化物が含まれてなることを特徴とする生分解性 樹脂組成物。

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Cited By (13)

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