Ppg Industries, Inc.

Renato J Mazzoni

George H Bowser

Lester F Schutrum

George R Mistrick

Barent A Rosskamp

Richard R Lewchuk

Vernon A Shoop

An adhesion-promoting primer, e.g., an emulsion polymer, is employed to bond organic elastomers to silicone elastomer adhesives. A multiple glazed unit having an organic elastomer sealant about its periphery is mounted into a curtainwall system by first coating the exposed organic elastomer sealant with a suitable primer before bonding the multiple glazed unit to the curtainwall system with silicone elastomer adhesive.

Primed multiple glazed units for curtainwall systems

A hermetically sealed spandrel unit has a transparent sheet mounted in facing relationship to a metal sheet having a desiccant containing film mounted thereon.

Desiccated spandrel panels

Adhesive cleats having (1) adhesion in shear and (2) shear resistance of greater than about 40 pounds per square inch (2.80 kilograms per square centimeter) adhere a desiccative spacer to adjacent glass sheets to prevent spacer sag and/or spacer bow. A moisture-impervious sealant seals the airspace between the glass sheets to provide a multiple glazed unit.

Multiple glazed unit having an adhesive cleat

A novel sealing and spacing unit for multiple glazed windows, and multiple glazed windows employing such a sealing and spacing unit, are disclosed. The sealing and spacing unit comprises a flexible, moisture-impervious base such as a strip of aluminum foil. Disposed on the base in a lengthwise manner is an elongated, flexible, dehydrator strip which comprises a particulate desiccant such as a crystalline zeolite dispersed throughout a moisture-permeable, elastic, polymeric matrix, such as an ethylene-ethyl acrylate copolymer. The dehydrator strip is secured to the base by a thin layer of an adhesive such as an ethylene acrylic acid copolymer hot melt adhesive. Also disposed on the base in a lengthwise manner are two strips of a cold flowable, moisture resistant, mastic, sealant composition. The strips are preferably spaced slightly apart from, and are positioned on both sides of the adhesively secured dehydrator strip. Preferably, the cold flowable, mastic, sealant composition is an admixture of polybutene and two different molecular weight polyisobutylenes.

Sealing and spacing unit for multiple glazed windows

Transmittance of solar radiation (heat and/or light) through a glazing installation is reduced by adhering an additional pane of glass directly onto an installed pane with no airspace therebetween.

Reducing solar radiation transmittance of installed glazing

A solar heat collector has a breather tube to provide communication between the ambient air and air in the airspace of the collector through desiccant material. In this manner, the air pressure in the airspace is equalized to the ambient air pressure without moisture moving into the airspace and the desicant material is regenerated.

Solar heat collector having a breather tube

A solar heat collector of the type having a pair of tempered glass sheets mounted in spaced relation to each other and to a solar energy and infrared absorber is provided with a vapor-impervious and moisture-impervious seal. The seal includes (1) a moisture-impervious adhesive to prevent moisture from moving between the glass sheets and absorber and (2) a vapor-impervious strip, e.g., an aluminum strip mounted between the adhesive and peripheral edge portions of the glass sheets and absorber to prevent solvent vapors of the adhesive from moving between the glass sheets and absorber.

Solar heat collector having a vapor barrier seal and method of making

An additional pane is added to an existing glazing installation to provide an insulating, sealed airspace therebetween.

Growing community of inventors

Tarentum, PA, United States of America

Renato J Mazzoni