Patent ID: 6867256

Claim:
Thermoplastic copolyamide resulting from the reaction between at least one polyfunctional monomer satisfying the following general formula I: (AR 1 )—R—(R 2 B) n (I) in which: n is an integer greater than or equal to 2, R 1 , R 2 may be identical or different and represent a covalent bond or an aliphatic, arylaliphatic, aromatic or alkylaromatic hydrocarbon radical, R is a linear or branched aliphatic radical, a cycloaliphatic radical, an aromatic radical, or a polymeric chain, A represents an amine or amine salt functional group, or an acid, ester, acid halide or amide functional group, B represents an amine or amine salt functional group when A is an acid, ester, acid halide or amide functional group, or B is an acid, ester, acid halide or amide function group when A is an amine or amine salt functional group, and at least one bifunctional monomer of the following formulae II to IV, and optionally, a monofunctional monomer of the following formulae V or VI; or a prepolymer obtained from at least one bifunctional monomer of the following formulae II to IV and, optionally, at least one monofunctional monomer of the following formulae V or VI, the bifunctional monomers satisfying the following general formulae: A 1 —R 3 —A 1 (II), B 1 —R 4 —B 1 (III), A 1 —R 5 —B 1 (IV) and/or the corresponding lactams of (IV) the monofunctional monomers satisfying the following general formulae: R 6 —B 1 (V) and/or R 7 —A 1 (VI) in which A 1 , B 1 may be identical or different and represent an acid, ester or acid chloride functional group, an amine functional group or an amine salt, R 3 , R 4 , R 5 may be identical or different and represent linear or branched alkyl hydrocarbon radicals or cycloaliphatic radicals optionally including unsaturated groups, R 6 , R 7 may be identical or different and represent aromatic, linear or branched, alkyl hydrocarbon radicals or alkylaryl arylalkyl or cycloaliphatic radicals optionally including unsaturated groups.