Polymer compound for manufacture of biodegrad- able plastic article and article made of said polymer and its manufacture

Abstract

Abstract PURPOSE: To obtain the subject compsn. capable of being formed into a film and excellent in heat resistance, flexibility and hot-melt properties by mixing a specific ethylene/vinyl alcohol copolymer, a modified starch and a high b.p. plasticizer in a specific ratio and to heat and stirr the resulting mixture. CONSTITUTION: An ethylene/vinyl alcohol copolymer with ethylene content of 10-90 wt.% and a melt flow index of 2-50 and a modified starch are compounded in a wt. ratio of 1:19 to 19:1, pref., 1:4 to 4:1 and a high b.p. plasticizer is added to the resulting mixture in a ratio of 0.05-100%, pref., 20-100% by wt. of modified starch and, if necessary, all of components are pref. heated and mixed at 130-160°C in the presence of a modifier composed of urea, an alkaline earth or alkali metal hydroxide to obtain the objective compsn. imparting a sheet like article excellent in mechanical strength, tear resistance and drilling resistance. COPYRIGHT: (C)1991,JPO

Inventors

• 👤 Catia Bastiolo
• 👤 カチア・バスチオーリ
• 👤 Vittorio Bellotti
• 👤 ヴィットーリオ・ベルロッティ
• 👤 Giudice Luciano Del
• 👤 ルチアーノ・デル・ジュディーチェ
• 👤 Roberto Lombi
• 👤 ロベルト・ロンビ

Bibliographic Details