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 good layer adhesion can be achieved in a composite having two or more layers wherein a layer I is obtained from a molding composition which has the following components: a) from 0 to 80 parts by weight of a polyamide selected from the group consisting of PA6, PA66, PA6/66 and a mixture thereof; b) from 0.05 to 100 parts by weight of a polyamine-polyamide copolymer; and c) from 0 to 80 parts by weight of a polyamide selected from the group consisting of PA11, PA12, PA612, PA1012, PA1212 and a mixture thereof; wherein a total of the parts by weight of components a), b) and c) is 100; wherein at least 20 parts by weight of components a) and b) is a monomer unit which is obtained from caprolactam and/or from a combination of hexamethylenediamine/adipic acid; and wherein at least 20 parts by weight of components b) and c) is a monomer unit which is obtained from null-aminoundecanoic acid, laurolactam, a mixture of hexamethylenediamine and 1,12-dodecanedioic acid, a mixture of 1,10-decanediamine and 1,12-dodecanedioic acid, and/or a mixture of 1,12-dodecanediamine and 1,12-dodecanedioic acid.
Abstract:
An element of a conduit system of a fuel cell, wherein the part which is in contact with the conveyed medium is composed of a polyester molding composition, can be manufactured at low cost, has a good barrier action with respect to the conveyed medium and releases very substantially no components which poison or polarize the catalyst.
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:
The present invention relates to a molding composition containing thermoplastic polyesters, impact-modifying component which contains anhydride groups, a copolymer of null-olefin, acrylic compound, olefinically unsaturated epoxide, carboxylic anhydride, carboximide, oxazoline and/or oxazinone, which has improved low-temperature impact strength; methods of making molding with the molding composition and molding containing the composition.
Abstract:
A component of a line system of a fuel cell, comprises: a) an innermost layer I, which is in contact with the conveyed fluid and is comprised of a polyester molding composition, and, b) at least one other layer present which is selected from the group consisting of: i) a layer II comprised of a polyamide molding composition, ii) a layer III comprised of a molding composition comprised of a functionalized polyolefin, iii) a layer IV comprised of a polyolefin molding composition in which the polyolefin is not functionalized, and iv) a layer V comprised of an EVOH molding composition.
Abstract:
Good adhesion between layers is achieved in a multilayer composite having the following layers: I. a layer I of a polyamide molding composition; II. a layer II of a bonding agent having at least 50% by weight of a mixture of a) from 30 to 70 parts by volume of a polymer selected from a polyamide and a polyamine-polyamide copolymer, b) from 0.1 to 70 parts by volume of an olefin polymer containing a functional group, c) from 69.9 to 0 parts by volume of an unfunctionalized polyolefin, where the sum of the parts by volume of a), b) and c) is 100; and III. a layer III of a polyolefin molding composition.