Patent ID: 8022170

Claim:
Semi crystalline, melt processible, partially aromatic copolyamides, producible by condensation of at least the following monomers or precondensates thereof: a) terephthalic acid b) at least one dimerised fatty acid with up to 44 carbon atoms, wherein the dimerised fatty acid has a trimerised fatty acid content of at most 3% by weight, and c) at least one aliphatic diamine of the formula H 2 N—(CH 2 ) x —NH 2 , wherein x means a whole number from 4-18, with the proviso that when the partially aromatic copolyamide is produced by condensation of the monomers or precondensates a), b) and c) where X is 6, and further d) adipic acid, the melting point of the copolyamides is at least 265° C. as measured by Differential Scanning Calorimetry (DSC).