Polyamide composite having two or more layers

A composite having two or more layers and comprising:

• a layer I obtained form a molding composition comprising:
• a) from 0 to 80 parts by weight of a polyamide selected from the group consisting of polyamide 6, polyamide 66, polyamide 6/66 and a mixture thereof;
• b) from 0.05 to 100 parts by weight of a polyamine-polyamide copolymer prepared from the following monomers:
• α) from 0.5 to 25% by weight, based on the polyamine-polyamide copolymer, of a polyamine having at least 4 nitrogen atoms and having a number-average molecular weight Mn of at least 146 g/mol, and
• β) a polyamide-forming monomer selected from the group consisting of a lactam, a ω-aminocarboxylic acid, an equimolar combination of a diamine and a dicarboxylic acid and a mixture thereof;
• and
• a) from 0 to 80 parts by weight of a polyamide selected from the group consisting of polyamide 6, polyamide 66, polyamide 6/66 and a mixture thereof;
• b) from 0.05 to 100 parts by weight of a polyamine-polyamide copolymer prepared from the following monomers:
• α) from 0.5 to 25% by weight, based on the polyamine-polyamide copolymer, of a polyamine having at least 4 nitrogen atoms and having a number-average molecular weight Mn of at least 146 g/mol, and
• β) a polyamide-forming monomer selected from the group consisting of a lactam, a ω-aminocarboxylic acid, an equimolar combination of a diamine and a dicarboxylic acid and a mixture thereof;
• and
• c) from 0 to 80 parts by weight of a polyamide selected from the group consisting of polyamide 11, polyamide 12, polyamide 612, polyamide 1012, polyamide 1212 and a mixture thereof;
• wherein a total of the parts by weight of components a), b) and c) is 100;
• wherein a total amount of said polyamide a) and said polyamine-polyamide b) contains at least 20 parts by weight of a monomer unit which is obtained
• i) by ring-opening polymerization of caprolactam, or
• ii) by polycondensing hexamethylenediamine and adipic acid or
• iii) by copolycondensing caprolactam, hexamethylenediamine and adipic acid;
• and
• wherein a total of said polyamine-polyamide b) and said polyamide c) contains at least 20 parts by weight of a monomer unit which is obtained by polycondensing of ω-aminoundecanoic acid, or ring-opening and polycondensing of laurolactam or polycondensing
• c) from 0 to 80 parts by weight of a polyamide selected from the group consisting of polyamide 11, polyamide 12, polyamide 612, polyamide 1012, polyamide 1212 and a mixture thereof;
• wherein a total of the parts by weight of components a), b) and c) is 100;
• wherein a total amount of said polyamide a) and said polyamine-polyamide b) contains at least 20 parts by weight of a monomer unit which is obtained
• i) by ring-opening polymerization of caprolactam, or
• ii) by polycondensing hexamethylenediamine and adipic acid or
• iii) by copolycondensing caprolactam, hexamethylenediamine and adipic acid;
• and
• wherein a total of said polyamine-polyamide b) and said polyamide c) contains at least 20 parts by weight of a monomer unit which is obtained by polycondensing of ω-aminoundecanoic acid, or ring-opening and polycondensing of laurolactam or polycondensing of at least one of the following mixtures:
• a mixture of hexamethylenediamine and 1, 12 dodecanedioic acid, a mixture of 1, 10 decanediamine and 1, 12 dodecanedioic acid, a mixture of 1, 12 dodecanediamine and 1, 12 dodecanedioic acid;
• wherein the molding composition of layer I is obtained by subjecting a blend comprising polyamide a) and said polyamide c) to solid-phase post-condensation;
• wherein at least one of a) or c) is present.

A composite having two or more layers and comprising:

• a layer I obtained form a molding composition comprising:
• a) from 0 to 80 parts by weight of a polyamide selected from the group consisting of polyamide 6, polyamide 66, polyamide 6/66 and a mixture thereof;
• b) from 0.05 to 100 parts by weight of a polyamine-polyamide copolymer prepared from the following monomers:
• α) from 0.5 to 25% by weight, based on the polyamine-polyamide copolymer, of a polyamine having at least 4 nitrogen atoms and having a number-average molecular weight Mn of at least 146 g/mol, and
• β) a polyamide-forming monomer selected from the group consisting of a lactam, a ω-aminocarboxylic acid, an equimolar combination of a diamine and a dicarboxylic acid and a mixture thereof;
• and
• c) from 0 to 80 parts by weight of a polyamide selected from the group consisting of polyamide 11, polyamide 12, polyamide 612, polyamide 1012, polyamide 1212 and a mixture thereof;
• wherein a total of the parts by weight of components a), b) and c) is 100;
• wherein a total amount of said polyamide a) and said polyamine-polyamide b) contains at least 20 parts by weight of a monomer unit which is obtained
• i) by ring-opening polymerization of caprolactam, or
• ii) by polycondensing hexamethylenediamine and adipic acid or
• iii) by copolycondensing caprolactam, hexamethylenediamine and adipic acid;
• and
• wherein a total of said polyamine-polyamide b) and said polyamide c) contains at least 20 parts by weight of a monomer unit which is obtained by polycondensing of ω-aminoundecanoic acid, or ring-opening and polycondensing of laurolactam or polycondensing of at least one of the following mixtures:
• a mixture of hexamethylenediamine and 1, 12 dodecanedioic acid, a mixture of 1, 10 decanediamine and 1, 12 dodecanedioic acid, a mixture of 1, 12 dodecanediamine and 1, 12 dodecanedioic acid;
• wherein either polyamide a) or c) contains an excess of amino end groups and the other polyamide contains an excess of carboxyl end groups;
• wherein at least one of a) or c) is present.

A composite having two or more layers and comprising:

• a layer I obtained form a molding composition comprising:
• a) from 0 to 80 parts by weight of a polyamide selected from the group consisting of polyamide 6, polyamide 66, polyamide 6/66 and a mixture thereof;
• b) from 0.05 to 100 parts by weight of a polyamine-polyamide copolymer prepared from the following monomers:
• α) from 0.5 to 25% by weight, based on the polyamine-polyamide copolymer, of a polyamine having at least 4 nitrogen atoms and having a number-average molecular weight Mn of at least 146 g/mol, and
• β) a polyamide-forming monomer selected from the group consisting of a lactam, a ω-aminocarboxylic acid, an equimolar combination of a diamine and a dicarboxylic acid and a mixture thereof;
• and
• c) from 0 to 80 parts by weight of a polyamide selected from the group consisting of polyamide 11, polyamide 12, polyamide 612, polyamide 1012, polyamide 1212 and a mixture thereof;
• wherein a total of the parts by weight of components a), b) and c) is 100;
• wherein a total amount of said polyamide a) and said polyamine-polyamide b) contains at least 20 parts by weight of a monomer unit which is obtained
• i) by ring-opening polymerization of caprolactam, or
• ii) by polycondensing hexamethylenediamine and adipic acid or
• iii) by copolycondensing caprolactam, hexamethylenediamine and adipic acid;
• and
• wherein a total of said polyamine-polyamide b) and said polyamide c) contains at least 20 parts by weight of a monomer unit which is obtained by polycondensing of ω-aminoundecanoic acid, or ring-opening and polycondensing of laurolactam or polycondensing of at least one of the following mixtures:
• a mixture of hexamethylenediamine and 1, 12 dodecanedioic acid, a mixture of 1, 10 decanediamine and 1, 12 dodecanedioic acid, a mixture of 1, 12 dodecanediamine and 1, 12 dodecanedioic acid;
• wherein components a) and c) are linked by adding a reactive compound which links the polyamide end groups to one another;
• wherein a) and c) are present.