Film-reinforced glasses
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.
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 μm.
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 μm.
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 .