Multilayered moulded products based on polyamides

Details Multilayered moulded products based on polyamides Multilayered moulded products based on polyamides

1989-08-14

1991-01-29

Seidleck, James

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

428 3691, 4284769, 428336, 4284235, 220454, 427230, 427231, 427386, B65D 2514, B32B 2708, B05D 722

Patent

active

049885499

ABSTRACT:
This invention relates to the process of applying heat curable reaction resin mixtures of polyisocyanates (a), polyepoxides (b), reaction inhibitors (c), heat activated reaction catalysts (d) and optionally auxiliary agents and additives (e) for the production of multilayered moulded products based on polyamides with a cured duromer layer by applying the mixture and heat curing of the reaction resin mixtures are preferably applied to the polyamide moulded products produced by the anionic lactam polymerization process by rotation, extrusion or centrifugal casting while the said polyamide products are still hot from the heat of polymerization, e.g. to form internal coatings on rotation cast polyamide pipes. The invention further relates to duromer coated multilayered moulded products produced by the above process.

REFERENCES:
patent: 4486507 (1984-12-01), Schumacher

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