Abstract:
The present invention provides a layered composite, which includes the following layers: (I) a layer I composition including: (a) from 0 to 80 parts by weight of at least one polyamide selected from the group including PA6, PA66, PA6/66 and mixtures thereof; (b) from 0 to 100 parts by weight of at least one polyamine-polyamide copolymer that includes the following monomer units; (null) from 0.5 to 25% by weight, based on the weight of the polyamine-polyamide copolymer, of at least on polyamine, having at least 4 nitrogen atoms and having a number-average molar mass Mn of at least 146 g/mol, and (null) at least one polyamide-forming monomer selected from the group including lactam, null-aminocarboxylic acid, equimolar combination of diamine and dicarboxylic acid, and mixtures thereof; and (c) from 0 to 80 parts by weight of at least one polyamide selected from the group including PA11, PA12, PA612, PA1012, PA1212 and mixtures thereof; wherein, in the layer I, a total of the parts by weight of (a), (b) and (c) is 100; wherein within an entirety of (a) and (b), at least 20 parts by weight of the entirety include monomer units selected from the group including caprolactam, combination of hexamethylenediamine/adipic acid, and mixtures thereof; and wherein within an entirety of (b) and (c), at least 20 parts by weight of the entirety include monomer units selected from the group including null-aminoundecanoic acid, laurolactam, combination of hexamethylenediamine/1,12-dodecanedioic acid, combination of 1,10-decanediamine/1,12-dodecanedioic acid, combination of 1,12-dodecanediamine/1,12-dodecanedioic acid, and mixtures thereof; and (II) a layer II composition which includes at least one ethylene-vinyl alcohol copolymer.
Abstract:
A molding composition of at least 50% by weight of a polyamine-polyamide copolymer obtained from 0.05 to 2.5% by weight of a polyamine having at least 4 nitrogen atoms and having a viscosity of at least 5 000 Panulls at 250null C. and at a shear rate of 0.1 l/s, and having a viscosity ratio of at least 7 at 250null C., when the melt viscosities at shear rates of 0.1 l/s and 100 l/s are compared with one another, has high melt stiffness and is easy to cut, and performs well in blow molding.
Abstract:
A molding composition containing the following components: I. from 99.9 to 95 parts by weight of a polyetheramide obtained from 1) a linear aliphatic diamine having from 6 to 12 carbon atoms, 2) a linear aliphatic or aromatic dicarboxylic acid having from 6 to 12 carbon atoms, and 3) a polyetherdiamine having at least 3 carbon atoms per ethereal oxygen atom and having a primary amino group at an end of the chain, and II. from 0.1 to 5 parts by weight of a copolymer which contains from 0.8 to 20% by weight of an anhydride or an epoxide in copolymerized form, wherein the total amount of I. and II. is 100 parts by weight, is suitable for the extrusion of flexible pipes, and also for the production of flexible blow-molded articles.