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Composite having more than one layer

  • US 6,335,101 B1
  • Filed: 02/22/2000
  • Issued: 01/01/2002
  • Est. Priority Date: 02/27/1999
  • Status: Expired due to Fees
First Claim
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1. A thermoplastic composite having a multiplicity of layers and comprising:

  • I) a layer of a polyamide molding composition, II) a layer of a polyester molding composition, and III) a layer of an adhesion promoter adherent to I and II consisting of a blend of;

    a) from 20 to 80% by weight of a polyamide, prepared from α

    ) at least one diamine having from 6 to 12 carbon atoms, and β

    ) an essentially stoichiometrically equivalent amount of at least one dicarboxylic acid comprising at least 5 mol % of a dicarboxylic acid having from 10 to 36 carbon atoms, andb) from 80 to 20% by weight of a polyester, prepared from α

    ) a mixture of from 30 to 95 mol % of an aromatic dicarboxylic acid having from 6 to 20 carbon atoms and from 70 to 5 mol % of the same dicarboxylic acid as in the polyamide of the adhesion promoter, having from 10 to 36 carbon atoms, and β

    ) at least one diol having from 2 to 12 carbon atoms.

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