Sulphur-free expanding and heat-curing rubber mouldings

Details Sulphur-free expanding and heat-curing rubber mouldings Sulphur-free expanding and heat-curing rubber mouldings

C - Chemistry, Metallurgy

08

J

C08J 9/00 (2006.01)

Patent

CA 2269834

Hot hardening, expanding shaped parts based on solid polybutadiene rubber and vulcanization systems, free from elementary sulphur and characterized by the following advantageous properties: when delivered in a non-hardened state said preforms have only a slight rubber elastic restoring force and are easily deformable; no unpleasant odours occur during the hardening process, and a soft elastic foam with a closed skin is formed when used in a hardened state.

Des pièces façonnées expansibles, durcissables à chaud, à base de caoutchouc polybutadiène solide et de systèmes de vulcanisation exempts de soufre élémentaire, sont caractérisées en ce qu'elles présentent les propriétés avantageuses suivantes: à l'état de livraison non durci, elles ne présentent qu'une faible force de rappel due à l'élasticité du caoutchouc et sont facilement déformables; durant le processus de durcissement, il n'y a dégagement d'aucune odeur incommodante; et, à l'état d'utilisation durci, il se forme une mousse souple et élastique à croûte fermée.

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