MODIFIED BITUMINOUS COMPOSITION FOR ROOF MEMBRANES

摘要

Roofing membranes are provided with both high stiffness at high temperature (greater than 110 ~C) and good flexibility at low temperature (less than -20 ~C). Bituminous compositions may be more effectively used in such membranes at lower elastomer concentration than currently practiced, using conventional cross-linking reagents to prepare the modified bituminous compositions with a range of viscosities that are readily processed as compared with conventiona l non-cross-linked systems.