A sealant composition for use in a tire (22) is disclosed. The sealant composition comprises 100 phr of elastomers, said elastomers comprising at least 60 phr or at least 75 phr of an isobutylene-based elastomer component and at least 5 phr or at least 8 phr of a conjugated diene-based elastomer component; at least 5 phr of a particulate filler; and at least 0.5 phr of an organic peroxide. Also, a method of forming a sealant layer and a method of manufacturing a pneumatic rubber tire having a puncture sealing feature is disclosed. The method comprises: building an unvulcanized tire (22) comprising a circumferential rubber tread (28), a supporting carcass (24), a containment layer (26), and a sealant layer (27) disposed intermediate the supporting carcass (24) and the containment layer (26), the sealant layer (24) comprising said sealant composition; and curing the unvulcanized tire (22) at a sufficient temperature to depolymerize the isobutylene-based elastomer component, at least partially, and to produce the pneumatic rubber tire having the puncture sealing feature.


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    Title :

    SEALANT COMPOSITION FOR SELF-SEALING PNEUMATIC TIRE


    Additional title:

    DICHTUNGSZUSAMMENSETZUNG FÜR SELBSTDICHTENDEN LUFTREIFEN
    COMPOSITION D'ÉTANCHÉITÉ POUR PNEUMATIQUE AUTO-OBTURANT



    Publication date :

    2024-10-02


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B29C Formen oder Verbinden von Kunststoffen , SHAPING OR JOINING OF PLASTICS / B29L INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES , Index-Schema für besondere Gegenstände in Verbindung mit Unterklasse B29C / B60C VEHICLE TYRES , Fahrzeugreifen



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