Coal tar pitch modified by nitrile butadiene rubber

Details Coal tar pitch modified by nitrile butadiene rubber Coal tar pitch modified by nitrile butadiene rubber

C - Chemistry, Metallurgy

08

L

C08L 95/00 (2006.01)

Patent

CA 2234329

A modified coal tar pitch useful in roofing applications, containing coal tar pitch, and a nitrile butadiene rubber, is blended by heating the coal tar pitch to a molten temperature, adding the rubber in powder form and agitating the material in a suitable high shear mixing apparatus until adequate phase inversion occurs between the polymer and the coal tar phase. After preparation, the material is cooled in containers until use, at which time it is heated to a flowable temperature and applied using a roofing mop or squeegee.

Goudron modifié utile pour toitures, à base de goudron et d'un caoutchouc de nitrile-butadiène, obtenu par chauffage du goudron à la température de fusion, addition de caoutchouc sous forme de poudre, et agitation du matériau dans un mélangeur approprié à cisaillement élevé, jusqu'à ce qu'il y ait une inversion de phase suffisante entre le polymère et la phase de goudron. Après séparation, le matériau est refroidi dans des contenants jusqu'au moment de l'utilisation, où il est chauffé à une température le rendant fluide et appliqué à l'aide d'un balai à franges ou d'une raclette.

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