Abstract: A component of a line system of a fuel cell, comprises:

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.

Abstract: A method for connecting a plastic pipe to another plastic part, wherein an outer layer of the plastic pipe and an outer layer of the other plastic part are largely opaque to laser light, in which both the plastic pipe and the other plastic part are sheathed at the ends by an adaptor made of a plastic transmissive to laser light, and the adaptor is fastened by means of laser welding. In other embodiments, an adaptor of a material transmissive to laser light is molded together with another plastic part by a two-component injection-molding process, or the adaptor is molded and then overmolded to the other plastic part. This is followed by insertion of the pipe into the adaptor and fastening of the pipe to the adaptor by laser welding. The invention also relates to the composite parts produced according to this method.

Abstract: A multilayer composite comprises a layer configuration A/C/B or A/C/B/C/A, wherein I. each layer A comprises a molding composition that comprises at least 50% by weight of a polymer A containing amino groups; II. layer B comprises a molding composition that consists of at least 50% by weight of a thermoplastic polyester or fluoropolymer B; III. each layer C comprises a molding composition that consists essentially of the following components a)-c): a) from 5 to 95 parts by weight of the polymer A, b) from 95 to 5 parts by weight of the polymer B, and c) from 1 to 90 parts by weight of a compatibilizer comprising an alkyl acrylate polymer.

Abstract: The present invention relates to a liquid or vapor conducting system containing an attachment cohesively bonded to a hollow article by way of a coextruded multilayer composite and a method for bonding single- or multilayer hollow plastic articles to attachments. Within the present invention the attachments include: attachment nipples, threaded necks, closure caps, and valves; and the bond is made with the aid of a semifinished or finished product produced from a coextrudate.

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: A multilayer plastic pipe comprising at least three layers, which in turn comprise at least two different polymers, which are a polymer A (barrier layer polymer), which is a particularly good barrier against permeation of the medium to be carried through the pipes embedded in a polymer B (sheathing polymer) in the form of at least one layer which is interrupted at least once by a fillet of polymer B.

Abstract: The present invention provides a layered composite, which includes the following layers:

Abstract: A multilayer composite comprising at least the following layers: I. a layer I of a polyamide molding composition and II. a layer II of a polyester molding composition, where the layers are firmly bonded to each other without use of an additional layer of bonding agent, wherein the polyester molding composition comprises a mixture of: a) from 80-99% by weight of a polyalkylene 2,6-naphthalate selected from the group consisting of polyethylene 2,6-naphthalate and polybutylene 2,6-naphthalate, and b) from 1-20% by weight of one or more compounds containing at least two isocyanate groups, wherein, in addition, the isocyanate groups from component IIb are present in layer II in a concentration of from 0.03-3% by weight.

Abstract: A good layer adhesion can be achieved in a composite having two or more layers wherein

Abstract: A multilayer plastic composition having (I) an outer layer of a thermoplastic molding composition and (II) an inner layer of an electrically conductive thermoplastic molding composition containing graphite fibrils, which are useful for the transport of (petro) chemical materials and also in the motor vehicle sector for conveying brake, cooling and hydraulic fluid and also fuel.

Abstract: A multilayer plastic pipe comprising at least three layers, which in turn comprise at least two different polymers, which are a polymer A (barrier layer polymer), which is a particularly good barrier against permeation of the medium to be carried through the pipes embedded in a polymer B (sheathing polymer) in the form of at least one layer which is interrupted at least once by a fillet of polymer B.

Abstract: A connector for connecting an assembly to a pipe, which is highly leakproof with respect to the medium to be transported and is secure against separation under axial load. The connector comprises two materials A and B which swell to different degrees. A part comprising the more strongly swelling material A has, at the junction with the material B, a peripheral connecting lip which is substantially enclosed by the less swelling material B, so that a positive connection is achieved.

Abstract: A multilayer plastic composition having (I) an outer layer of a thermoplastic molding composition and (II) an inner layer of an electrically conductive thermoplastic molding composition containing graphite fibrils, which are useful for the transport of (petro)chemical materials and also in the motor vehicle sector for conveying brake, cooling and hydraulic fluid and also fuel.

Abstract: A composite material having improved thermal and mechanical properties is provided by a thermoplastic multilayer composite consisting at least of(I) a layer of a polyvinylidene fluoride moulding composition,(II) a layer directly adjacent to the layer I, comprising a moulding composition based on a mixture of(a) from 40 to 90% by weight of a polyamide, and(b) from 10 to 60% by weight of a polyglutarimide,(III) a layer directly adjacent to the layer II comprising a suitable coupling agent, and(IV) a layer directly adjacent to the layer III, comprising a polyolefin moulding composition, with adjacent layers being firmly bonded to one another. By means of the invention it is possible to obtain composite materials having the desired improved property profile.

Abstract: A plastic fuel filter having at least three layers, wherein the inner and outer layers are made of a plastic which has been made conductive (component A) and have embedded between them one or more layers of one or more plastics which have not been made conductive (component B, etc.), with the inner and outer layers together forming a continuous conductive path. The fuel filter is made from inexpensive materials and is simple to produce. The fuel filter of the present invention can be used in the motor vehicle sector.

Abstract: A platform (1) for the storage or removal of motor vehicles (2) with at least two axles (4) in parking garages is used with multiple-occupancy parking devices having lifting devices (5) for the platforms (1). Openings (12) are provided in the platform base (1a), which openings (12) are covered by diaphragm-like permanently elastic plates (10a) in which indentations (10) are produced by the vehicle wheel (7). The platform is capable of receiving vehicle wheels (7) of various diameters (8) and/or widths (9).

Abstract: Multilayer plastic pipes having at leastI. a layer based on a molding composition of polyamide; andII. a layer adjacent to layer I and based on a molding containing a mixture of(a) from 97.5 to 50% by weight of polyvinylidene fluoride; and(b) from 2.5 to 50% by weight of an acrylate copolymer,with the layers adhering to one another, are provided. These pipes exhibit improved resistance to chemical agents such as, methanol-containing fuels, without the loss of typical properties of polyamide and polyvinylidene fluoride.

Abstract: A plastic pipe having improved resistance, inter alia, to methanol-containing fuels and improved mechanical properties, comprising at least:(I) an outer layer,(III) an inner layer comprising a moulding composition based on polyvinylidene fluoride, and(II) an intermediate layer disposed between said inner layer (I) and said outer layer (III) comprising a moulding composition based on a mixture of(a) polyamide, and(b) polyglutarimide,wherein the adjacent layers (I) to (III) are each adhesively bonded to one another.

Abstract: The present invention relates to a plastic pipe having improved resistance, inter alia, to methanol-containing fuels and improved mechanical properties, comprising.(I) at least one outer layer,(II) at least one inner layer comprising a polyvinylidene fluoride molding composition, and(III) a layer, disposed between the inner layer II and the outer layer I, comprising a molding composition comprising a mixture of:(a) polyamide and(b) polyalkyl acrylate,wherein the layers (I)-(III) are adhesively bonded to one another.