초록

A waterproofing laminate suitable for use in roofs, floors, or other surfaces where waterproofing is desired, comprises an elastomeric sheet secured to a modified bitumen layer and a release sheet secured to the modified bitumen layer. Certain preferred materials for use in the laminate are recited.

대표청구항 ▼

A waterproof laminate comprising: an elastomeric sheet; said elastomeric sheet comprising about 10 to 40 percent by weight of unplasticized polyvinyl chloride; about 10 to 40 percent by weight of ethylene vinyl acetate carbon monoxide terpolymer; about 5 to 35 percent by weight of coal tar pitch; th

A waterproof laminate comprising: an elastomeric sheet; said elastomeric sheet comprising about 10 to 40 percent by weight of unplasticized polyvinyl chloride; about 10 to 40 percent by weight of ethylene vinyl acetate carbon monoxide terpolymer; about 5 to 35 percent by weight of coal tar pitch; the remainder being particulate filler, fibrous filler, plasticizer, processing aids and stabilizers; a modified bitumen layer secured to said elastomeric sheet; said modified bitumen layer containing a material selected from the group consisting of natural rubber, synthetic rubber, natural resin, and synthetic resin; and a release sheet secured to said modified bitumen layer, whereby the removal of said release sheet will permit securement of said waterproofing laminate to a surface by application of pressure to said elastomeric sheet-modified bitumen layer.