Film-reinforced glasses

• US 7,332,216 B2
• Filed: 12/17/2001
• Issued: 02/19/2008
• Est. Priority Date: 12/18/2000
• Status: Expired due to Fees

• Current Assignee: Bridgestone Corporation
• Original Assignee: Bridgestone Corporation
• Inventors: Hashimoto, Masao, Okada, Tokuo
• Primary Examiner(s): NAKARANI, DHIRAJLAL S
• Application Number:
  US10/203,944
• Publication Number:
  US 20030111159A1
• Time in Patent Office: 2,255 Days
• Field of Search: 156/99, 156/106, 427/165, 428/331, 428/332, 428/437, 428/442, 428/501, 428/522, 428/412
• US Class Current: 428/331
• CPC Class Codes: B32B 17/10018 comprising only one glass sheet
• CPC Class Codes: B32B 17/10605 Type of plasticiser
• CPC Class Codes: B32B 17/10761 containing vinyl acetal
• CPC Class Codes: B32B 17/10788 containing ethylene vinylacetate
• CPC Class Codes: B32B 2367/00 Polyesters, e.g. PET, i.e. polyethylene terephthalate
• CPC Class Codes: B32B 2369/00 Polycarbonates
• CPC Class Codes: B32B 27/36 comprising polyesters
• CPC Class Codes: C03C 17/34 with at least two coatings having different compositions C03C17/44 takes precedence
• CPC Class Codes: C03C 17/3405 with at least two coatings of organic materials C03C17/36, C03C17/42 take precedence
• CPC Class Codes: C03C 2217/445 Organic continuous phases
• CPC Class Codes: C03C 2217/478 Silica
• CPC Class Codes: Y10T 428/259 Silicic material
• 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 428/3163 Next to acetal of polymerized unsaturated alcohol [e.g., formal butyral, etc.]
• CPC Class Codes: Y10T 428/31649 Ester, halide or nitrile of addition polymer
• CPC Class Codes: Y10T 428/31667 Next to addition polymer from unsaturated monomers, or aldehyde or ketone condensation product
• CPC Class Codes: Y10T 428/31797 Next to addition polymer from unsaturated monomers
• CPC Class Codes: Y10T 428/31859 Next to an aldehyde or ketone condensation product
• CPC Class Codes: Y10T 428/31935 Ester, halide or nitrile of addition polymer

Abstract

The present invention provides a film-reinforced glass, which has excellent impact resistance, penetration resistance and durability and which can be easily prepared. The constitution of the glass consists of one glass plate and a film comprising an organic polymer which is superposed thereon through a transparent adhesive layer, wherein the transparent adhesive layer comprises a first transparent adhesive layer of polyvinyl butyral and a second transparent adhesive layer of ethylene-vinyl acetate copolymer; or wherein a hard coat layer consisting of a cured layer formed from a curable resin containing fine particles of silica is provided on the surface of the organic polymer film on the side in noncontact with the transparent adhesive layer.

Claims

1. A film-reinforced glass comprising one glass plate and a film comprising an organic polymer which is superposed thereon through a transparent adhesive layer,

wherein the transparent adhesive layer comprises a first transparent adhesive layer comprising polyvinyl butyral and a second transparent adhesive layer comprising ethylene-vinyl acetate copolymer cured by triallyl isocyanurate, the first transparent adhesive layer being directly bonded to the glass plate and the second transparent adhesive layer being directly bonded to the film.

2. The film-reinforced glass as defined in claim 1, wherein a thickness of the first transparent adhesive layer is in the range of 100 to 1,000 μ

m.

3. The film-reinforced glass as defined in claim 1, wherein the first transparent adhesive layer is formed by a coating method.

4. The film-reinforced glass as defined in claim 1, wherein a thickness of the second transparent adhesive layer is in the range of 5 to 600 μ

m.

5. The film-reinforced glass as defined in claim 1, wherein the second transparent adhesive layer is formed by a coating method.

6. The film-reinforced glass as defined in claim 1, wherein the ethylene-vinyl acetate copolymer of the second transparent adhesive layer contains vinyl acetate in an amount of 10 to 50% by weight.

7. The film-reinforced glass as defined in claim 1, wherein the transparent adhesive layer further contains γ

-(methacryloxypropyl)trimethoxysilane.

8. The film-reinforced glass as defined in claim 1, wherein the organic polymer film is a polyethylene terephthalate film or a polycarbonate film.

9. The film-reinforced glass as defined in claim 1, wherein a hard coat layer is provided on the organic polymer film.

10. The film-reinforced glass as defined in claim 9, wherein the hard coat layer comprises a cured layer formed from a curable resin containing fine particles of silica.

11. The film-reinforced glass as defined in claim 9, wherein the hard coat layer comprises a cured layer formed from a curable resin containing fine particles of silica and the silica particles have a primary particle size of 1 to 200 nm.

12. The film-reinforced glass as defined in claim 9, wherein the hard coat layer comprises a cured layer formed from a curable resin containing fine particles of silica and the silica particles have a polymerizable unsaturated group.

13. The film-reinforced glass as defined in claim 9, wherein the hard coat layer comprises a cured layer formed from a curable resin containing fine particles of silica and the silica particles are obtained by reaction between silica particles and an alkoxy silane compound having a polymerizable unsaturated group.

14. The film-reinforced glass as defined in claim 9, wherein an antireflection layer is formed on the hard coat layer.

15. A side window of an automobile comprising the film-reinforced glass as defined in claim 1.

16. An automobile provided with the side window comprising the film-reinforced glass as defined in claim 1.