Low temperature and primerless waterproofing laminates

B - Operations – Transporting – 32 – B

Patent

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154/104, 154/138

B32B 11/04 (2006.01) B32B 11/00 (2006.01) B32B 33/00 (2006.01) D06N 5/00 (2006.01)

Patent

CA 2005219

ABSTRACT OF THE DISCLOSURE Disclosed are methods for waterproofing civil engineering structures using flexible, sheet-like waterproofing laminates which can be applied to structures at temperatures as low as 0°F and can be applied without primer to structures at temperatures of 40°F and above. Also disclosed are waterproofing laminates having a bituminous layer comprising 29 to 54 weight percent asphalt, 25 to 50 weight percent process oil, and 16 to 35 weight percent thermoplastic block polymer of styrene and butadiene monomers.

On divulgue des méthodes pour imperméabiliser des constructions du génie civil, grâce à des laminés imperméabilisants en forme de feuilles, qui peuvent être appliqués sur ces constructions à des températures aussi basses que 0 degré F, et sans application de couche primaire sur les constructions à des températures de 40 degrés F ou plus. La divulgation concerne également des laminés imperméabilisants comportant une couche bitumineuse constituée de 29 à 54 % en poids d'asphalte, de 25 à 50 % en poids d'huile de procédé, et de 16 à 35 % en poids d'un polymère thermoplastique séquencé de monomères de butadiène et de styrène.

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