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Radiation resistant polypropylene useful in medical applications

  • US 20070123620A1
  • Filed: 12/02/2004
  • Published: 05/31/2007
  • Est. Priority Date: 12/08/2003
  • Status: Abandoned Application
First Claim
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1. ) A blend useful as an additive in polyolefin polymers for minimizing the effects of radiation on the physical properties of said polymers, which comprises a hindered amine light stabilizer and at least one material selected from the group consisting of:

  • i) amine oxides exemplified by the formula;

    embedded image in which R1 and R2 are each independently selected from C10 to C24 alkyl, aryl, or alkylaryl groups, whether straight-chain, branched, cyclic, saturated, or unsaturated; and

    ii) hydroxylamines exemplified by the formula;

    embedded image in which R1 and R2 are each independently selected from C10 to C24 alkyl, aryl, or alkylaryl groups, whether straight-chain, branched, cyclic, saturated, or unsaturated.

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