ROLL ROOFING AND WATERPROOFING MATERIAL Russian patent published in 1999 - IPC

FIELD: manufacture of building materials. SUBSTANCE: invention, in particular, relates to upper and lower membrane roofings and waterproofing of buildings and constructions. Roll material consisting of base glass, bitumen polymer binder, upper layer filler, and lower layer polymer film is distinguished by that its lower layer composition contains, wt %: atmosphere-vacuum petroleum distillation residue with viscosity at least 8 s oxidized to softening temperature 36-40 C, 50-60; ataxic polypropylene with viscosity 10000-100000 s, 10-20; divinylstyrene thermoelastoplastic, 0.5-3; and mineral filler, 25-35. EFFECT: improved physico-mechanical properties and increased heat resistance. 1 tbl