# US 8,785,337 B2 · Glass container composition

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- Number: US 8,785,337 B2
- Document ID: US8785337B2
- Status: Granted
- Kind: B2
- Application number: 13/179,161
- Filed: 2011-07-08
- Published: 2013-01-10
- Granted: 2014-07-22
- Earliest claimed: 2011-07-08
- Assignees: Owens-Brockway Glass Container Inc.
- Applicants: Stephen D. Barton; Carol A. Click; Terence K. G. Howse
- Inventors: Stephen D. Barton; Carol A. Click; Terence K. G. Howse
- Web page: https://patentgrep.com/patent/US8785337B2

## CPC

- C03C 3/087: containing calcium oxide, e.g. common sheet or container glass
- C03C 4/02: for coloured glass
- C03C 4/085: {for ultraviolet absorbing glass}
- Y10T 428/131: Glass, ceramic, or sintered, fused, fired, or calcined metal oxide or metal carbide containing [e.g., porcelain, brick, cement, 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
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A glass container and related methods of manufacturing. The glass container has a glass composition including soda-lime base glass materials, and an oxide of vanadium for good ultraviolet light blocking properties and an oxide of selenium to decolor the glass for good clarity and decolorization. The glass composition of the glass container also may include an oxide of sulfur.

## Claims

### Claim 1

In a flint glass container, an improvement for blocking UV light penetration into the container while providing decolorization in container glass,
wherein the container glass includes an oxide of vanadium and an oxide of selenium present in the container glass and wherein the oxide of vanadium is present in a retained amount ranging between 0.01 wt % and 0.14 wt % and the oxide of selenium is present in a retained amount ranging between 0.0125 wt % and 0.025 wt %.

### Claim 2 (depends on 1)

The container set forth in claim 1 wherein the oxide of vanadium is present in an amount of about 0.1 wt %.

### Claim 3 (depends on 2)

The container set forth in claim 2 wherein the oxide of selenium is present in an amount of about 0.025 wt %.

### Claim 4 (depends on 1)

The container set forth in claim 1 wherein an oxide of sulfur is present in the container glass in an amount ranging between 0.03 wt % and 0.3 wt %.

### Claim 5 (depends on 4)

The container set forth in claim 4 wherein the oxide of sulfur is present in the container glass in an amount ranging between ranging between 0.08 wt % and 0.25 wt %.

### Claim 6 (depends on 5)

The container set forth in claim 5 wherein the oxide of sulfur is present in the container glass in an amount of about 0.2 wt %.

### Claim 7 (depends on 1)

The container set forth in claim 1 wherein the oxide of vanadium is present in an amount of about 0.1 wt %, the oxide of selenium is present in an amount of about 0.025 wt %, and the oxide of sulfur is present in an amount of about 0.2 wt %.

### Claim 8

A glass container having a glass composition including:
soda-lime base glass materials; and
additives including an oxide of vanadium and an oxide of selenium retained in the container glass and wherein the oxide of vanadium is retained in an amount of about 0.1 wt % and the oxide of selenium is retained in an amount of about 0.025%.

### Claim 9 (depends on 8)

The container set forth in claim 8 wherein the soda-lime base glass materials are retained in an amount ranging between 73.1 wt % and 99.9 wt %.

### Claim 10 (depends on 9)

The container set forth in claim 9 wherein the soda-lime base glass comprises the following materials in an amount by weight:
60-75% SiO2;
7-15% Na2O;
6-12% CaO;
0. 1-3.0% Al2O3;
0-2.0% MgO; and
0-2.0% K2O.

### Claim 11 (depends on 8)

The container set forth in claim 8 wherein an oxide of sulfur is present in the container glass in an amount ranging between 0.03 wt % and 0.3 wt %.

### Claim 12 (depends on 8)

The container set forth in claim 8 wherein the oxide of sulfur is present in the container glass in an amount ranging between ranging between 0.08 wt % and 0.25 wt %.

### Claim 13 (depends on 8)

The container set forth in claim 8 wherein the oxide of sulfur is present in the container glass in an amount of about 0.2 wt %.

### Claim 14 (depends on 8)

The container set forth in claim 8 wherein the oxide of sulfur is present in an amount of about 0.2 wt %.

### Claim 15 (depends on 8)

The container set forth in claim 8 wherein the composition is substantially free of As, oxides of arsenic, and hexavalent chromium.

### Claim 16

A method of making glass containers including the steps of:
preparing a batched glass composition including soda-lime base glass materials, and including oxides of vanadium and selenium wherein the oxide of vanadium is present in an amount ranging between 0.03 wt % and about 0.1 wt % and the oxide of selenium is present in an amount greater than 0.03 wt % and less than about 0.1 wt %;
melting the batched glass composition in a glass melt furnace to produce a molten batched glass;
forming the glass containers from the molten batched glass; and
annealing the glass containers.

### Claim 17 (depends on 16)

The method set forth in claim 16 wherein the combination of the oxides of vanadium and selenium produces a non-green appearance in the glass containers.

### Claim 18 (depends on 16)

The method set forth in claim 16 wherein the combination of the oxides of vanadium and selenium improves ultraviolet light blocking of the containers.

### Claim 19 (depends on 16)

The method set forth in claim 16 wherein the glass containers are annealed between 550 and 600 degrees Celsius for thirty to ninety minutes.

### Claim 20 (depends on 16)

The method set forth in claim 16 wherein the batched glass composition is melted at about 1450 degrees Celsius for about three hours, and the glass containers are annealed at about 550 degrees Celsius for about one hour.

### Claim 21 (depends on 16)

The method set forth in claim 16, without heating the glass containers to striking temperatures.

### Claim 22 (depends on 16)

The method set forth in claim 16 wherein the soda-lime base glass materials are present in an amount ranging between 73.1 wt % and 99.9 wt %.

### Claim 23 (depends on 16)

The method set forth in claim 16 wherein the soda-lime base glass comprises the following materials in an amount by weight:
60-75% S1O2;
7-15% Na2O;
6-12% CaO;
0. 1-3.0% Al2O3;
0-2.0% MgO; and
0-2.0% K2O.

### Claim 24 (depends on 16)

The method set forth in claim 16 wherein the oxides of vanadium and selenium are each present in substantially equal amounts.

### Claim 25 (depends on 24)

The method set forth in claim 24 wherein the amounts of the oxides of vanadium and selenium are each about 0.1 wt %.

### Claim 26 (depends on 16)

The method set forth in claim 16 wherein the batched glass composition is substantially free of As, oxides of arsenic, and hexavalent chromium.

### Claim 27 (depends on 16)

The method set forth in claim 16 wherein the batched glass composition also includes up to 0.4 wt % of an oxide of sulfur.

### Claim 28 (depends on 16)

The method set forth in claim 16 wherein the batched glass composition also includes an oxide of sulfur in an amount ranging between 0.005 wt % and 0.35 wt %.

### Claim 29 (depends on 16)

The method set forth in claim 16 wherein the batched glass composition also includes an oxide of sulfur in an amount ranging between 0.25 wt % and 0.35 wt %.

### Claim 30 (depends on 16)

The method set forth in claim 16 wherein the oxide of vanadium is present in an amount of about 0.1 wt %, the oxide of selenium is present in an amount of about 0.1 wt %, and the oxide of sulfur is present in an amount of about 0.3 wt %.

### Claim 31 (depends on 16)

A glass container produced by the method set forth in claim 16.

### Claim 32

A method of making glass containers including the steps of:
preparing a batched glass composition including soda-lime base glass materials, and including oxides of vanadium and selenium in about equal amounts;
melting the batched glass composition in a glass melt furnace to produce a molten batched glass;
forming the glass containers from the molten batched glass; and
annealing the glass containers.

### Claim 33 (depends on 32)

The method set forth in claim 32 wherein the oxide of vanadium and selenium are present in an amount ranging between 0.035 wt % and 0.25 wt % total.

### Claim 34 (depends on 32)

The method set forth in claim 32 wherein the amounts of vanadium and selenium are each about 0.1 wt %.

### Claim 35 (depends on 32)

The method set forth in claim 32 wherein the batched glass composition also includes up to 0.4 wt % of an oxide of sulfur.

### Claim 36 (depends on 32)

The method set forth in claim 32 wherein the batched glass composition also includes an oxide of sulfur in an amount ranging between 0.005 wt % and 0.35 wt %.

### Claim 37 (depends on 32)

A glass container produced by the method set forth in claim 32.

### Claim 38 (depends on 32)

The method set forth in claim 32 wherein the oxide of vanadium is present in an amount ranging between 0.03 wt % and 0.1 wt % and the oxide of selenium is present in an amount greater than 0.03 wt % and less than about 0.1 wt %.

### Claim 39 (depends on 38)

The method set forth in claim 38 wherein the oxide of selenium is present in an amount between about 0.05 wt % and about 0.1 wt %.

### Claim 40 (depends on 16)

The method set forth in claim 16 wherein the oxide of selenium is present in an amount between about 0.05 wt % and about 0.1 wt %.