Copolyester elastomer compositions and fusion bonded articles

C - Chemistry – Metallurgy – 08 – L

Patent

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Details

C08L 67/02 (2006.01) B32B 27/08 (2006.01) C09J 167/02 (2006.01)

Patent

CA 2378818

The invention provides a composition that exhibits good adhesion to polyamide material and other materials, comprising 60 to 99 weight percent of a copolyester elastomer, and 1 to 40 weight percent of a novolac resin, based on the total weight of the copolymer elastomer and the novolac resin only, wherein the composition comprises greater than 50 weight percent copolyester elastomer based on the total weight of the composition. The invention also concerns an article comprising at least two materials bonded together at one or more defined contact surfaces, a first one of the bonded materials comprising a copolyester elastomer and a novolac resin. Such bodies can be welded, injection molded, and extruded simultaneously or sequentially.

L'invention concerne une composition présentant une excellente adhérence à la matière polyamide et à d'autres matières, comprenant 60 à 99 % en poids d'un élastomère copolyester, et 1 à 40 % en poids de résine novolaque, sur la base du poids total de l'élastomère copolyester et de la résine novolaque seulement, ladite composition comprenant plus de 50 % en poids d'élastomère copolyester sur la base du poids total de la composition. L'invention concerne également un article comprenant au moins deux matières assemblées au niveau d'au moins une surface de contact définie, une première matière renfermant un élastomère copolyester et une résine novolaque. De tels corps peuvent être soudés, moulés par injection, et moulé par extrusion simultanément ou de façon séquentielle.

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