| 摘要 |
Carbonate polymer compositions are rendered gamma ray resistant by the incorporation of 5 to 20,000 ppm of one or more sorbate compounds. The compositions of the invention have a reduced yellowing after exposure to cobalt 60 radiation. Examples of useful sorbate compounds are sorbic acid, sorbic acid amides, esters and the like. The addition of hindered phenolic compounds renders the sorbate compounds more effective.
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