초록 ▼

A high performance, hot melt, single-component sealant which combines the prefered properties of single- and two-component sealants. The sealant comprises a styrene block copolymer, a moisture-curable silylated polyurethane prepolymer, an aromatic tackifier resin, a polar tackifier resin, a polyethy

A high performance, hot melt, single-component sealant which combines the prefered properties of single- and two-component sealants. The sealant comprises a styrene block copolymer, a moisture-curable silylated polyurethane prepolymer, an aromatic tackifier resin, a polar tackifier resin, a polyethylene wax and an organo silane adhesion promoter. Optionally, the sealant may include UV absorbers, antioxidants, plasticizers, catalysts, fillers, pigments, and the like. The sealant does not require mixing before it is applied at a high temperature to the surface that is to be sealed. After application, the sealant forms, upon cooling, a solid elastomer. Upon further exposure to atmospheric moisture, the sealant forms a thermoset crosslinked network having the preferred properties of two-component chemically-cured sealants. The sealant is suitable for use as an edge sealant for insulated glass.

대표청구항

[ What is claimed is:] [1.] A hot melt, single-component sealant comprising:a) a styrene block copolymer,b) a moisture-curable silylated polyurethane prepolymer,c) an aromatic tackifier resin,d) a polar tackifier resin,e) a polyethylene wax, andf) an organo functional silane.

[ What is claimed is:] [1.] A hot melt, single-component sealant comprising:a) a styrene block copolymer,b) a moisture-curable silylated polyurethane prepolymer,c) an aromatic tackifier resin,d) a polar tackifier resin,e) a polyethylene wax, andf) an organo functional silane.