Plasticized polyvinyl butyral sheet containing epoxy resin
First Claim
Patent Images
1. A laminated glazing panel sequentially comprising:
- (A) a glass sheet;
(B) a heat-wave-reflective or electrically conductive multi-layer coating which includes a photoreactive layer; and
(C) a sheet of plasticized polyvinyl butyral in interfacial contact with the photoreactive layer containing epoxy resin in amount effective to counteract reduction of adhesion between the sheet and the photoreactive layer after prolonged exposure of the glazing panel to light.
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Accused Products
Abstract
Plasticized polyvinyl butyral sheet containing epoxy resin in amount effective, after prolonged exposure to light, to counteract reduction of adhesion between the sheet and a photoreactive component with which it will be in potential contact. The photoreactive component is typically a dielectric such as a metal oxide layer of a heat-wave-reflective or electrically conductive multi-layer coating, which coating can optionally be supported on (a) a thermoplastic substrate sandwiched between two of such polyvinyl butyral sheets forming a prelaminate for use as a constituent of a laminated glazing panel or (b) a glass sheet component of such glazing panel.
28 Citations
12 Claims
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1. A laminated glazing panel sequentially comprising:
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(A) a glass sheet; (B) a heat-wave-reflective or electrically conductive multi-layer coating which includes a photoreactive layer; and (C) a sheet of plasticized polyvinyl butyral in interfacial contact with the photoreactive layer containing epoxy resin in amount effective to counteract reduction of adhesion between the sheet and the photoreactive layer after prolonged exposure of the glazing panel to light. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A laminated glazing panel sequentially comprising:
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(A) a glass sheet; (B) a heat-wave-reflective or electrically conductive multi-layer coating which includes a dielectric top layer; (C) a sheet of plasticized polyvinyl butyral in interfacial contact with the dielectric layer containing one or more glass adhesion-reducing agents and about 3 to about 10 parts per 100 parts of polyvinyl butyral of one or more epoxy resins capable of counteracting the reduction of adhesion of the sheet to the dielectric layer after prolonged exposure to light, said one or more epoxy resin being substantially inert to the level of adhesion of the polyvinyl butyral sheet to glass sheet (D); and (D) a glass sheet. - View Dependent Claims (10, 11, 12)
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Specification