GEGEN GAMMA-STRAHLEN BESTAENDIGE POLYCARBONATZUSAMMENSETZUNGEN
This invention relates to carbonate polymer compositions which are rendered gamma ray resistant by the incorporation of 500 to 50,000 ppm of one or more polyether polyols. Compared to the controls, the compositions of the invention have a reduced yellowing after exposure to cobalt 60 radiation.
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Format: | Patent |
Sprache: | eng ; ger |
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Zusammenfassung: | This invention relates to carbonate polymer compositions which are rendered gamma ray resistant by the incorporation of 500 to 50,000 ppm of one or more polyether polyols. Compared to the controls, the compositions of the invention have a reduced yellowing after exposure to cobalt 60 radiation. |
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