초록 ▼

A 100% solids polyurethane adhesive composition for bonding polymeric roofing materials to roof-deck substrates is provided which includes two components. The first component comprises a monomeric or polymeric diisocyanate, or a polyurethane prepolymer formed by the reaction of the monomeric or poly

A 100% solids polyurethane adhesive composition for bonding polymeric roofing materials to roof-deck substrates is provided which includes two components. The first component comprises a monomeric or polymeric diisocyanate, or a polyurethane prepolymer formed by the reaction of the monomeric or polymeric diisocyanate with a polyol. The second component comprises a polyol selected from the group consisting of a polyether or polyester polyol, an alkanolamine diol, a hydroxyl-terminated homopolymer of polybutadiene, and mixtures thereof. The first and second components are combined such that the ratio of isocyanate groups in the first component to the ratio of hydroxyl groups in the second component is from about 0.5:1 to 1.5:1.

대표청구항 ▼

[ What is claimed is:] [1.] A 100% solids polyurethane adhesive composition for bonding roofing materials comprising:a) a first component selected from the group consisting of: monomeric diisocyanates selected from the group consisting of toluene diisocyanate, methylene diphenyl diisocyanate, hexame

[ What is claimed is:] [1.] A 100% solids polyurethane adhesive composition for bonding roofing materials comprising:a) a first component selected from the group consisting of: monomeric diisocyanates selected from the group consisting of toluene diisocyanate, methylene diphenyl diisocyanate, hexamethyl diisocyanate, isophorone diisocyanate, and hydrogenated methylene diphenyl diisocyanate; polymeric methylene diphenyl isocyanates formed by the reaction of one of said monomeric diisocyanates; or a prepolymer formed by the reaction of one of said monomeric diisocyanates or polymeric isocyanates with a polyol selected from the group consisting of polyether and polyester polyols;b) a second component comprising from about 50 to 60% by weight of a polyether polyol, from about 1 to 5% by weight of a reinforcing diol, from about 5 to 15% by weight of a hydroxyl-terminated homopolymer of polybutadiene, and a tackifier; wherein the ratio of isocyanate groups in said first component to the ratio of hydroxyl groups in said second component is from about 0.5:1 to 1.5:1, and wherein said adhesive composition provides a water-tight seal upon bonding to roofing materials.