| 摘要 |
PURPOSE:A vinyl composition which can prevent deacetylation and capture leaving acetyl groups, obtained by adding hydrotalcite to an ethylene-vinyl acetate- vinyl chloride graft copolymer. CONSTITUTION:Hydrotalcite is added to an ethylene-vinyl acetate-vinyl chloride graft copolymer alone or its mixture with a compatible high polymer. The examples of the compatible high polymer are polyvinyl chloride, an ethylene-vinyl acetate copolymer, and a nitrile rubber. The quantity of hydrotalcite is preferably at least 1pt.wt. based on 100pts.wt. polymers. For cross-linking, electron beam, gamma-rays, and a free-radical generator are also used. An organic peroxide is mainly used as free-radical generator. Cross-linking by the use of a silane coupling agent in combination with a free-radical generator is also practicable.
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