# US 5,346,770 A · Laminated glass structure

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- Number: US 5,346,770 A
- Document ID: US5346770A
- Status: Granted
- Kind: A
- Application number: 08/135,186
- Filed: 1993-10-12
- Granted: 1994-09-13
- Earliest claimed: 1991-02-14
- Assignees: Asahi Glass Company, Limited
- Inventors: Koichi Osada; Eiichi Ando; Akira Mitsui
- Web page: https://patentgrep.com/patent/US5346770A

## CPC

- C03C 17/38: at least one coating being a coating of an organic material
- B32B 17/10036: {comprising two outer glass sheets}
- B32B 17/10174: {Coatings of a metallic or dielectric material on a constituent layer of glass or polymer}
- B32B 17/10761: {containing vinyl acetal}
- Y10T 428/263: Coating layer not in excess of 5 mils thick or equivalent
- Y10T 428/265: 1 mil or less
- Y10T 428/31627: Next to aldehyde or ketone condensation product
- Y10T 428/3163: Next to acetal of polymerized unsaturated alcohol [e.g., formal butyral, etc.]
- C03C: CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A laminated glass structure is provided containing at least one glass sheet, a plastic layer provided at the bonding surface of the glass sheet, and a functioning layer having single-or multi-layered films between the bonding surfaces of the glass sheet and the plastic layer, with the functioning layer having a controlling layer in contact with the plastic layer, which contains as the major component an oxide including Cr and at least one of Ti, Zn, Sn, Ni, Zr, Al, Si, Mg and Fe, and wherein the controlling layer has an atomic ratio of Cr to atoms other than oxygen of 60% or lower, and the film thickness of the controlling layer is 10 .ANG. to 500 .ANG..

## Claims

### Claim 1

A laminated glass structure, which comprises:
a) at least one glass sheet;
b) a plastic layer provided at the bonding surface of said glass sheet; and
c) a functioning layer consisting of single or multi-layered films which is provided between the bonding surfaces of the glass sheet and the plastic layer, wherein the functioning layer has a controlling layer as the layer in contact with the plastic layer, which comprises an effective amount of an oxide having the formula MCr.sub.x O.sub.y, wherein M is at least one element selected from the group consisting of Ti, Zn, Sn, Ni, Zr, Al, Mg and Fe; and wherein the atomic ratio of Cr to atoms other than oxygen in the controlling layer is from 10% to 60%, and
wherein the film thickness of said controlling layer is from 10 .ANG. to 500 .ANG..

### Claim 2 (depends on 1)

The laminated glass structure according to claim 1, wherein the atomic ratio of Cr to the atoms other than oxygen in the controlling layer is in the range of 10-40%.

### Claim 3 (depends on 1)

The laminated glass structure according to claim 1, wherein said controlling layer includes Ti.

### Claim 4 (depends on 1)

The laminated glass structure according to claim 1, wherein said functioning layer comprises a transparent conductive film which includes a metal film, and said controlling layer as the layer in contact with the plastic layer.

### Claim 5 (depends on 1)

The laminated glass structure according to claim 1, wherein said functioning layer comprises a solar radiation shielding film which includes a metal film, and said controlling layer as the layer in contact with the plastic layer.

### Claim 6 (depends on 4)

The laminated glass structure according to claim 4, wherein said functioning layer comprises multi-layered films which are laminated in the order of dielectric film/metal film/dielectric film.

### Claim 7 (depends on 5)

The laminated glass structure according to claim 5, wherein said functioning layer comprises multi-layered films which are laminated in the order of dielectric film/metal film/dielectric film.

### Claim 8 (depends on 1)

The laminated glass structure in claim 1, wherein said plastic layer is a polyvinylbutyral film.

### Claim 9 (depends on 6)

The laminated glass structure according to claim 6, wherein said metal film is selected from the group consisting of a film of Ag, Au, Pd, Cu, Pt, Ag-Pd and Ag-Cu.

### Claim 10 (depends on 6)

The laminated glass structure according to claim 6, wherein said dielectric material is selected from the group consisting of a film of ZnO, TiO.sub.2, Al-, Si-, Ti-, Mg-, Sn-, Mg- and B-doped ZnO, F- and Sb-doped SnO.sub.2 and Sn-doped In.sub.2 O.sub.3.

### Claim 11 (depends on 7)

The laminated glass structure according to claim 7, wherein said metal film is selected from the group consisting of a film of Ag, Au, Pd, Cu, Pt, Ag-Pd and Ag-Cu.

### Claim 12 (depends on 7)

The laminated glass structure according to claim 7, wherein said dielectric material is selected from the group consisting of a film of ZnO, TiO.sub.2, Al-, Si-, Ti-, Mg-, Sn-, Mg- and B-doped ZnO, F- and Sb-doped SnO.sub.2 and Sn-doped In.sub.2 O.sub.3.