Asphalt shingle coating with improved tear strength

Details Asphalt shingle coating with improved tear strength Asphalt shingle coating with improved tear strength

E - Fixed Constructions

04

D

E04D 1/22 (2006.01)

Patent

CA 2670086

The present invention is directed to an air-blown roofing asphalt modified with polyphosphoric acid and roofing products made with the polyphosphoric acid-modified, air-blown asphalt.

La présente invention concerne un asphalte pour toitures soufflé modifié avec un acide polyphosphorique et des produits pour toitures fabriqués avec l'asphalte soufflé, modifié avec un acide polyphosphorique.

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