FIELD: chemical industry.
SUBSTANCE: invention relates to a multilayer hollow element, which is characterized by very high resistance to washout and the following composition: the inner layer is a molding mixture based on PA612; the adhesion enhancing layer consists of a molding mixture based on 20 to 80 parts by weight of a polyamide selected from PA6, PA66, PA6 / 66 and their mixtures, and 20 to 80 parts by weight of a polyamide selected from PA11, PA12, PA612, PA1010 , PA1012, PA1212 and mixtures thereof, the total amount in parts by weight of the adhesion-enhancing layer components being 100; a layer consisting of a molding mixture based on a copolymer of ethylene and vinyl alcohol. The multilayer element according to the invention is characterized by high thermal deformation resistance, high impact resistance and high resistance to washout, that is, the content of both insoluble and soluble extracts is extremely low after contact with fuel.
EFFECT: combination of these properties allows the use of the multilayer hollow element as a component of the fuel system, for example, a fuel line or a fuel tank.
9 cl, 1 tbl, 2 ex
| Title | Year | Author | Number |
|---|---|---|---|
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| PIPELINE | 2007 |
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RU2469236C2 |
