Roofing laminate

Details Roofing laminate Roofing laminate

C - Chemistry, Metallurgy

08

L

C08L 33/00 (2006.01) B32B 11/02 (2006.01)

Patent

CA 2143179

A new roofing laminate provides for the application of mixture of hard and soft acrylic polymers to a hot or cold applied asphaltic layer. The hard acrylic polymer provides barrier characteristics that resist the movement of mobile phases into the shield layer, while the soft polymer provides flexibility of the laminate . The barrier characteristics are provided by ensuring that the polymer be sufficiently hard. The polymer should be present in an amount sufficient to ensure that it can form a continuous film on application to the base asphaltic layer. Pigment volume concentration should not be present in an amount that would interfere with the barrier characteristics, with the pigment volume concentration being less than 45wt%.

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