C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 95/00 (2006.01) C09K 3/10 (2006.01) C08L 53/02 (2006.01)
Patent
CA 2182379
A coal-tar-pitch-based roofing composition containing coal tar pitch, a rubbery block polymer, an extender oil, and an antioxidant to retard degradation of the coal tar pitch during blending of the composition, the composition being formed by heating the coal tar pitch, adding the naphthenic extender oil and the rubbery polymer and agitating the components at an elevated temperature for a period of time until phase inversion between the coal tar pitch and the rubbery polymer occurs.
L'invention concerne une composition destinée à être appliquée sur les toits, contenant du goudron de houille, un polymère bloc caoutchouteux, une huile de dilution et un antioxydant pour retarder la dégradation du goudron de houille durant le mélange des composants. On forme la composition en chauffant le goudron de houille, puis en ajoutant l'huile de dilution à base de naphtène et le polymère caoutchouteux et en agitant les composants à température élevée, pendant une durée de temps suffisante pour obtenir une inversion de phase entre le goudron de houille et le polymère caoutchouteux.
Alliedsignal Inc.
Garland Industries Inc.
Gowling Lafleur Henderson Llp
LandOfFree
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