# US 11,299,419 B2 · UV-resistant and alkaline-resistant borosilicate glass and use thereof

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- Number: US 11,299,419 B2
- Document ID: US11299419B2
- Status: Granted
- Kind: B2
- Application number: 16/755,600
- Filed: 2018-10-19
- Published: 2021-06-24
- Granted: 2022-04-12
- Earliest claimed: 2017-10-24
- Assignees: Sunshine Lake Pharma Co., Ltd.
- Applicants: Dongguan Hec Pharm R&D Co., Ltd.
- Inventors: Weiqiang Hong; Xinqian He; Yong Jiang; Zhengshang Zhou; Lianying Zhu; Zhiyong Li; Fangfang Huang
- Web page: https://patentgrep.com/patent/US11299419B2

## CPC

- C03C 3/095: containing rare earths
- A61J 1/1468: {Containers characterised by specific material properties}
- B65D 85/84: for corrosive chemicals
- C03C 3/091: containing aluminium
- C03C 4/085: {for ultraviolet absorbing glass}
- C03C 4/20: for chemical resistant glass
- C03C 8/02: Frit compositions, i.e. in a powdered or comminuted form
- C03C 8/04: containing zinc
- C03C 8/24: Fusion seal compositions being frit compositions having non-frit additions, i.e. for use as seals between dissimilar materials, e.g. glass and metal; Glass solders
- C03C 2204/00: Glasses, glazes or enamels with special properties
- C03C 2207/00: Compositions specially applicable for the manufacture of vitreous enamels
- 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
- A61J: CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- B65D: CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES

## Abstract

Disclosed is a type of borosilicate glass, the composition of which, based on oxides, contains the following components by weight percentage (wt %): 2.0 wt %-5.0 wt % of TiO2, 0.25 wt %-2.5 wt % of CeO2 and 0.25 wt %-3.0 wt % of Y2O3, and does not contain any iron compound, such as ferric oxide. The glass has better UV resistance and alkaline resistance properties, and a better light transmission rate, and is particularly suitable for use in the field of pharmaceutical packaging materials.

## Claims

### Claim 1

A borosilicate glass comprising the following constituents based on oxide: 2.0-5.0 wt % of TiO2, 0.25-2.5 wt % of CeO2, 0.25-3.0 wt % of Y2O3, wherein the borosilicate glass is free of an iron compound, and wherein the borosilicate glass is free of As2O3 and Sb2O3 apart from inevitable impurities.

### Claim 2 (depends on 1)

The borosilicate glass of claim 1, wherein the total amount of SiO2, TiO2, and CeO2 is not less than 72.0 wt %.

### Claim 3 (depends on 1)

The borosilicate glass of claim 1, further comprising the following constituents: 65.0-75.0 wt % of SiO2, 6.0-12.0 wt % of B2O3, 3.5-6.5 wt % of Al2O3; and the total amount of Na2O, K2O and Li2O is 5.5-9.5 wt %; and the total amount of CaO, MgO and BaO is 1.0-5.5 wt %.

### Claim 4 (depends on 1)

The borosilicate glass of claim 1, wherein the total amount of Na2O, K2O and Li2O is 5.5-9.5 wt %; the total amount of CaO, MgO and BaO is 1.0-5.5 wt %; and the total amount of SiO2, TiO2 and CeO2 is not less than 72.0 wt %.

### Claim 5 (depends on 1)

The borosilicate glass of claim 1, wherein the amount of CeO2 is 0.5-1.5 wt %.

### Claim 6 (depends on 1)

The borosilicate glass of claim 1, wherein the amount of CeO2 is 0.5-1.5 wt %, and the total amount of SiO2, TiO2, and CeO2 is not less than 72.0 wt %.

### Claim 7 (depends on 1)

The borosilicate glass of claim 1, wherein the amount of CeO2 is 0.5-1.5 wt %, the amount of SiO2 is 65.0-75.0 wt %, the amount of B2O3 is 6.0-12.0 wt %, the amount of Al2O3 is 3.5-6.5 wt %; and the total amount of Na2O, K2O and Li2O is 5.5-9.5 wt %; and the total amount of CaO, MgO and BaO is 1.0-5.5 wt %.

### Claim 8 (depends on 1)

The borosilicate glass of claim 1, wherein the amount of CeO2 is 0.5-1.5 wt %, the amount of SiO2 is 65.0-75.0 wt %, the amount of B2O3 is 6.0-12.0 wt %, the amount of Al2O3 is 3.5-6.5 wt %; and the total amount of SiO2, TiO2 and CeO2 is not less than 72.0 wt %; the total amount of Na2O, K2O and Li2O is 5.5-9.5 wt %; and the total amount of CaO, MgO and BaO is 1.0-5.5 wt %.

### Claim 9 (depends on 1)

The borosilicate glass of claim 1, comprising the following constituents based on oxide:
SiO2
65.0-75.0
wt %
B2O3
6.0-12.0
wt %
Al2O3
3.5-6.5
wt %
Na2O
4.5-8.5
wt %
K2O
0-2.5
wt %
Li2O
0-1.0
wt %
wherein Σ(Na2O + K2O + Li2O)
5.5-9.5
wt %
CaO
0.5-3.5
wt %
MgO
0-1.0
wt %
BaO
0-2.0
wt %
wherein Σ(CaO + MgO + BaO)
1.0-5.5
wt %
TiO2
2.0-5.0
wt %
CeO2
0.25-2.5
wt %
NaCl
0-1.0
wt %
Y2O3
0.25-3.0
wt %
ZrO2
0-4.0
wt %
ZnO
0-2.0
wt %
La2O3
0-2.0
wt %.

### Claim 10 (depends on 9)

The borosilicate glass of claim 9, wherein the summation of the amounts of SiO2, TiO2 and CeO2 is ≥72.0 wt %.

### Claim 11 (depends on 1)

The borosilicate glass of claim 1, comprising the following constituents based on oxide:
SiO2
68.5-72.5
wt %
B2O3
8.0-10.0
wt %
Al2O3
4.1-5.9
wt %
Na2O
5.5-7.0
wt %
K2O
0-1.0
wt %
Li2O
0-0.5
wt %
wherein Σ(Na2O + K2O + Li2O)
6.0-8.0
wt %
CaO
1.0-1.8
wt %
MgO
0-0.8
wt %
BaO
0.4-1.0
wt %
wherein Σ(CaO + MgO + BaO)
1.5-3.0
wt %
TiO2
2.0-3.5%
wt %
CeO2
0.5-1.5
wt %
NaCl
0-0.5
wt %
Y2O3
0.5-2.0
wt %
ZrO2
0-2.0
wt %
ZnO
0-1.0
wt %
La2O3
0-1.0
wt %.

### Claim 12 (depends on 1)

The borosilicate glass of claim 1, comprising the following constituents based on oxide:
SiO2
68.5-72.0
wt %
B2O3
8.0-10.0
wt %
Al2O3
4.6-5.9
wt %
Na2O
5.5-7.0
wt %
K2O
0-1.0
wt %
Li2O
0-0.5
wt %
wherein Σ(Na2O + K2O + Li2O)
6.0-8.0
wt %
CaO
1.0-1.8
wt %
MgO
0-0.8
wt %
BaO
0.4-1.0
wt %
wherein Σ(CaO + MgO + BaO)
1.5-3.0
wt %
TiO2
2.0-3.0%
wt %
CeO2
0.5-1.2
wt %
NaCl
0-0.5
wt %
Y2O3
0.5-2.0
wt %
ZrO2
0-2.0
wt %
ZnO
0-1.0
wt %
La2O3
0-1.0
wt %.

### Claim 13 (depends on 1)

The borosilicate glass of claim 1, further comprising at least one of ZrO2, ZnO and La2O3 in an amount from 0-1.0 wt %.

### Claim 14 (depends on 1)

The borosilicate glass of claim 1, having an ultraviolet-visible light transmittance T % less than 10% when the wavelength is ≤380 nm and a class 1 alkali resistance according to YBB00352004-2015.

### Claim 15 (depends on 1)

The borosilicate glass of claim 1, having an ultraviolet-visible light transmittance T % less than 10% when the wavelength is ≤380 nm, a class 1 alkali resistance according to YBB00352004-2015, a class 1 water resistance according to YBB00362004-2015 and a class 1 acid resistance according to YBB00342004-2015.

### Claim 16 (depends on 1)

A process comprising using the borosilicate glass of claim 1 to prepare a packaging material for a pharmaceutical; or a container or a chemical device for a chemically corrosive liquid; or a sealing glass for an alloy.

### Claim 17 (depends on 12)

The borosilicate glass of claim 12, further comprising at least one of ZrO2, ZnO and La2O3 in an amount from 0-1.0 wt %.

### Claim 18 (depends on 17)

The borosilicate glass of claim 17, having an ultraviolet-visible light transmittance T % less than 10% when the wavelength is ≤380 nm, a class 1 alkali resistance according to YBB00352004-2015, a class 1 water resistance according to YBB00362004-2015 and a class 1 acid resistance according to YBB00342004-2015.

### Claim 19 (depends on 18)

A process comprising using the borosilicate glass of claim 18 to prepare a packaging material for a pharmaceutical; or a container or a chemical device for a chemically corrosive liquid; or a sealing glass for an alloy.