Hydrosilated crystalline high trans polybutadiene with...

C - Chemistry – Metallurgy – 08 – F

Patent

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Details

C08F 8/42 (2006.01) C08C 19/25 (2006.01) C08L 9/00 (2006.01) C08L 21/00 (2006.01)

Patent

CA 2233823

Novel silicon-containing derivatives of crystalline, high-trans-1,4 polybutadiene in which organosilicon-containing groups are bonded to the 1 ,2-vinyl carbon atoms along the main chain of the butadiene polymers through the carbon-silicon linkages. These derivatives of butadiene polymers are produced by the addition reaction of an organosilicon compound having one hydrogen atom directly bonded to the silicon atom in the molecule to the double bonds in the 1,2-vinyl group butadiene polymers. These derivatives having good compatability with siliceous fillers and when blended with filled diene rubbers are cured to elastomer compositions having excellent properties suitable for the production of tires.

Nouveaux dérivés siliciés de 1,4 polybutadiène cristallisé à teneur élevée en isomère trans, dans lequel des groupes organosiliciés sont liés aux atomes de carbone 1,2-vinyliques le long de la chaîne principale des polymères de butadiène, via des liens carbone-silicium. Ces dérivés de polymères de butadiène sont produits par réaction d'addition d'un composé organosilicié, possédant un atome d'hydrogène directement lié à l'atome de silicium dans la molécule, aux doubles liaisons des polymères de butadiène à groupes 1,2-vinyliques. Lesdits dérivés présentent une bonne compatibilité avec les charges siliceuses, et, en mélange avec des caoutchoucs diéniques additionnés d'une charge, ils sont réticulés en compositions élastomères possédant d'excellentes propriétés, utiles pour la production de pneus.

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