process for stabilizing recycled halogen-free thermoplastic synthetic materials, as well as compositions of stabilized synthetic materials and molding materials and molded parts produced from them

摘要

the present invention relates to a process for stabilizing recycled halogen-free thermoplastic synthetic materials against oxidative, thermal and / or actinic degradation. in the process according to the invention, as a component, at least one alditol or cyclitol is introduced into a recycled halogen-free thermoplastic synthetic material, as well as optionally additionally, at least one primary antioxidant and / or at least one secondary antioxidant is introduced in a recycled halogen-free thermoplastic synthetic material. through the process according to the invention, recycled synthetic materials can be stabilized with high efficiency and in a very environmentally friendly and economical way against oxidative, thermal and / or actinic degradation. moreover, the present invention also relates to compositions of synthetic materials corresponding to the recycled base, as well as the molding masses and molded parts produced therefrom. in addition, the present invention also relates to stabilizing compositions, as well as their use for stabilizing recycled halogen-free thermoplastic synthetic materials against oxidative, thermal and / or actinic degradation.