Thermoplastic resinous substrates having an external thin glass sheet protective layer

• US 4,600,640 A
• Filed: 08/13/1984
• Issued: 07/15/1986
• Est. Priority Date: 08/13/1984
• Status: Expired due to Term

• Current Assignee: General Electric Company
• Original Assignee: General Electric Company
• Inventors: Olson, Daniel R.
• Primary Examiner(s): Ives, P. C.
• Application Number:
  US06/639,709
• Time in Patent Office: 701 Days
• Field of Search: 428/424.4, 428/425.6, 428/332, 428/412, 428/415, 428/442
• US Class Current: 428/332
• CPC Class Codes: B32B 17/10018 comprising only one glass sheet
• CPC Class Codes: B32B 17/1033 Laminated safety glass or glazing containing temporary protective coatings or layers
• CPC Class Codes: B32B 17/10706 being photo-polymerized
• CPC Class Codes: B32B 2307/558 Impact strength, toughness
• CPC Class Codes: B32B 2307/714 Inert, i.e. inert to chemical degradation, corrosion
• CPC Class Codes: B32B 2307/718 Weight, e.g. weight per square meter
• CPC Class Codes: B32B 2369/00 Polycarbonates
• CPC Class Codes: B32B 7/12 using interposed adhesives or interposed materials with bonding properties
• CPC Class Codes: Y10T 428/26 Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
• CPC Class Codes: Y10T 428/31507 Of polycarbonate
• CPC Class Codes: Y10T 428/31518 Next to glass or quartz
• CPC Class Codes: Y10T 428/31576 Ester monomer type [polyvinylacetate, etc.]
• CPC Class Codes: Y10T 428/31601 Quartz or glass
• CPC Class Codes: Y10T 428/31649 Ester, halide or nitrile of addition polymer

Abstract

An abrasion and chemical solvent resistant thermoplastic article is disclosed which has a protective layer of thin glass from about 0.3 mils to about 20 mils in thickness bonded to a thermoplastic substrate by a UV cured adhesive interlayer.

Claims

1. An article comprising thermoplastic substrate bonded by a UV cured adhesive interlayer on at least one surface to a laid on sheet of thin glass which glass has a thickness of from about 0.3 mil to about 10 mils.

2. The article of claim 1 wherein said thermoplastic resinous substrate is polycarbonate.

3. The article of claim 1 wherein said thermoplastic resinous substrate is polymethylmethacrylate.

4. The article of claim 1 wherein said adhesive interlayer is a UV cured polyacrylate.

5. The article according to claim 4 wherein said polyacrylate ester contains a urethane linkage.

6. The article of claim 1 wherein said adhesive interlayer is a UV cured epoxy resin.

7. The article of claim 1 wherein said resinous substrate is a sheet.

8. The article of claim 1 wherein said resinous substrate is the external lamina of a laminate.

9. The article of claim 1 wherein said UV cured adhesive interlayer contains a UV light absorbing compound.