Provided are: a polymer blend which includes an organic polymer having a reactive silicon-containing group and which can give cured objects excellent in terms of elongation property and stress relaxation; a composition comprising the polymer blend, a specific filler, and a curing catalyst; a sealant comprising the composition; and a sealant for tires. A polymer blend which includes an organic polymer having a bifunctional reactive silicon-containing group of a specific structure is mixed with given proportions of a polyoxyalkylene (A) which has a number-average molecular weight of 13,000 or higher and 100,000 or lower, has a reactive-silicon-containing-group equivalent Eqa of 0.010 mmol/g or more and 0.29 mmol/g or less, and contains more than one silicon-containing group per molecule and a polyoxyalkylene (B) which has a number-average molecular weight of 3,000 or higher and 25,000 or lower, has a reactive-silicon-containing group only at one end, and has a reactive-silicon-containing-group equivalent Eqb of 0.03 mmol/g or more and 0.58 mmol/g or less.
POLYMER BLEND, COMPOSITION, SEALANT, AND SEALANT FOR TIRE
POLYMERGEMISCH, ZUSAMMENSETZUNG, DICHTMITTEL UND DICHTMITTEL FÜR REIFEN
MÉLANGE DE POLYMÈRE, COMPOSITION, PRODUIT D'ÉTANCHÉITÉ, ET PRODUIT D'ÉTANCHÉITÉ POUR PNEUMATIQUE
30.11.2022
Patent
Elektronische Ressource
Englisch
IPC: | C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / B60C VEHICLE TYRES , Fahrzeugreifen / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS / C09K Materialien für Anwendungen, soweit nicht anderweitig vorgesehen , MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR |
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