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Ionomer/polyamide blends with improved flow and impact properties

  • US 6,756,443 B2
  • Filed: 01/25/2002
  • Issued: 06/29/2004
  • Est. Priority Date: 01/25/2002
  • Status: Expired due to Term
First Claim
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1. An ionomer/polyamide alloy blend having improved flow properties comprising;

  • an ionomer/polyamide alloy consisting of from 40 to 60 parts by weight ionomer phase and from 60 to 40 parts by weight continuous or co-continuous semicrystalline polyamide phase and for every one hundred parts by weight of ionomer/polyamide alloy blend;

    (i) from one to twenty parts by weight low molecular weight copolymer of ethylene and at least one other comonomer selected from the group consisting of acrylic acid, methacrylic acid and mixtures thereof, wherein said low molecular weight copolymer has a melt index (ASTM D1238) of greater than 350 dg/min and an acrylic acid and methacrylic acid combined comonomer content of at least 5 weight percent; and

    optionally (ii) up to twenty parts per weight of one or more additives selected from the group consisting of very low density polyethylene (VLDPE), maleic anhydride grafted VLDPE, ethylene propylene (EPR) rubber, maleic anhydride grafted EPR, ethylene propylene diene monomer (EPDM) rubber, maleic anhydride grafted EPDM and mixtures thereof.

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