초록 ▼

This invention relates generally to sealants for insulating glass units. More specifically, this invention is a one-component, hot applied, chemically curing sealant for edge sealing insulating glass units. The sealant contains a thermoplastic hot melt resin blended with an atmospheric curing resin.

This invention relates generally to sealants for insulating glass units. More specifically, this invention is a one-component, hot applied, chemically curing sealant for edge sealing insulating glass units. The sealant contains a thermoplastic hot melt resin blended with an atmospheric curing resin. The hot melt resin functions as the meltable component during the initial application, and supplies strength immediately upon cooling. The polymer phase then begins to cure by reaction with atmospheric oxygen and/or moisture to form a cross-linked thermoset elastomer which is temperature resistant. At this point, the hot melt resin functions as an inert plasticizer within the cured polymer phase. The sealant of the present invention may additionally include plasticizers, fillers, pigments, catalysts and the like.

대표청구항 ▼

[ What is claimed is:] [1.] In an insulating glass unit having a first glazing pane maintained in a spaced apart relation with a second glazing pane by a spacer, an edge sealant for said insulating glass unit, said sealant comprising:a thermoplastic hot-melt resin, said thermoplastic hot melt resin

[ What is claimed is:] [1.] In an insulating glass unit having a first glazing pane maintained in a spaced apart relation with a second glazing pane by a spacer, an edge sealant for said insulating glass unit, said sealant comprising:a thermoplastic hot-melt resin, said thermoplastic hot melt resin having a melt temperature of between approximately 125.degree.-250.degree. F., andan atmospheric curing resin, said atmospheric curing resin polymerizing upon exposure to a component of the atmosphere, said component comprising a compound selected from the group consisting of oxygen, water vapor, and mixtures thereof, said atmospheric curing resin comprising a silicon-containing atmospheric curing resin, said atmospheric curing resin being combined with said thermoplastic hot melt resin as a single material, whereby said sealant is in a liquid phase at a temperature above room temperature of around 68.degree.-77.degree. F., reversibly solidifies upon cooling to room temperature of around 68.degree.-77.degree. F., and irreversibly solidifies upon subsequent exposure to said component of the atmosphere.