Thermal Stabilization of Poly (vinyl chloride) by 6-<I>R</I>-1, 3, 5-triazine-2, 4-dithiols

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  • MORI Kunio
    Department of Applied Chemistry, Fucalty of Engineering, Iwate University
  • NAKAMURA Yoshiro
    Department of Applied Chemistry, Fucalty of Engineering, Iwate University

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Other Title
  • ポリ塩化ビニルの改質　ＸＸＸＩＸ　　６‐Ｒ‐１，３，５‐トリアジン‐２，４‐ジチオールによるポリ塩化ビニルの熱安定化
  • 6 R 1 3 5 トリアジン 2 4 ジチオール ニヨル ポリ エンカ ビニ

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Description

Thermal stabilization of poly (vinyl chloride) (PVC) containing 6-R-1, 3, 5-triazine-2, 4-dithiols (triazine dithiols) and Zn-Ba-stearate (PVC sheets) was studied at 170°C. Triazine dithiols restrained the dehydrochlorination of PVC sheets, and improved the color stability of PVC sheets. A model reaction, the UV spectroscopy and the viscosity measurement of the products showed that triazine dithiols mainly react with unstable allyl-type chlorine in PVC, resulting in a stable cross-linking structure. Improvement of thermal stability of PVC by triazine dithiols was attributed to the trapping of allyl-type chlorine in PVC, which is the initiator of zipper-like reaction.

Journal

  • KOBUNSHI RONBUNSHU

    KOBUNSHI RONBUNSHU 37 (2), 103-109, 1980

    The Society of Polymer Science, Japan

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