Process for preparing polymeric films useful for blocking the transmission of near infra red light
AssigneeE. I. Du Pont de Nemours and Company
InventorsRichard A. Fugiel, Richard Allen Hayes
Life of this patent
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Abstract
The present invention is an infra red (IR)-blocking coating and a process for applying the IR-blocking coating onto the surface of a polymer. The process comprises the steps of dispersing an IR-blocking material in a mixture of solvent comprising a dissolved polymer and using standard printing processes to coat at least a portion of the surface of a bulk polymer, preferably a sheet or film. The present invention also provides safety glass laminates whose polymer interlayers have improved adhesion to glass in addition to light blocking properties.
Claims26
A process of preparing a laminate comprising (a) at least one layer of glass or another rigid transparent layer and (b) at least one polymeric film or sheet comprising at least one surface that is at least partially covered with an infra red blocking coating comprising infra red blocking materials, the process comprising:
- (a) providing the at least one layer of glass or another rigid transparent layer;
- (b) providing at least one polymeric film or sheet;
- (c) applying the at least one surface of the at least one polymeric film or sheet with the infra red blocking coating comprising infra red blocking material by printing;
- and (d) forming the laminate.
A process of preparing a laminate comprising (a) at least one layer of glass or another rigid transparent layer and (b) at least one polymeric film or sheet, the process comprising:
- (a) providing the at least one layer of glass or another rigid transparent layer;
- (b) providing at least one polymeric film or sheet comprising at least one surface that is at least partially covered with an infra red blocking coating comprising infra red blocking materials;
- and (c) forming the laminate, wherein the polymeric film or sheet comprises a polymer selected from the group consisting of poly(vinyl butyral), and acid copolymers and copolymer ionomers obtained from copolymerization of ethylene with an ethylenically unsaturated carboxylic acid and/or derivatives thereof.
Dependencies are inferred from the claim text.