Reinforced glass container, method for producing pharmaceutical container, and method for producing reinforced glass container

Patent metadata

Field	Value
Publication number	US-12473229-B2
Application number	US-202318217690-A
Country	US
Kind code	B2
Filing date	Jul 3, 2023
Priority date	Jan 8, 2021
Publication date	Nov 18, 2025
Grant date	Nov 18, 2025

Abstract

To provide a reinforced glass container which has impact resistance and which can be used for treatment involving exposure to high temperatures or ultraviolet irradiation.The reinforced glass container of the present invention comprises a glass container and a polymer layer provided on the outer surface of the glass container and having a thickness of more than 1 μm, wherein the polymer layer contains a tetrafluoroethylene type polymer having a melting temperature of more than 260° C. and having carbonyl group-containing groups or hydroxy group-containing groups.

First claim

What is claimed is:

1 . A reinforced glass container, comprising:
a glass container and a polymer layer provided directly on an outer surface of the glass container and having a thickness of more than 1 μm, wherein the polymer layer contains a tetrafluoroethylene type polymer as the only resin material contained therein, and the tetrafluoroethylene type polymer
has a melting temperature of more than 260° C. measured by DSC,
has a compressive strength of more than 12 MPa to at most 40 MPa measured by ASTM-D695,
contains carbonyl group-containing groups or hydroxy group-containing groups,
contains units based on a perfluoro (alkyl vinyl ether) other than CF 2 ═CFOCF 3 and CF 2 ═CFOCF 2 CF 3 , and
does not contain units based on CF 2 CFOCF 3 or CF 2 ═CFOCF 2 CF 3 .

2 . The reinforced glass container according to claim 1 , wherein the tetrafluoroethylene type polymer has a main chain containing from 10 to 5000 carbonyl group-containing groups per 1×10 6 carbon atoms in the main chain.

3 . The reinforced glass container according to claim 1 , wherein the glass container is made of borosilicate glass or alkali aluminosilicate glass.

4 . The reinforced glass container according to claim 1 , wherein the glass container has a thickness of at most 2 mm.

5 . The reinforced glass container according to claim 1 , wherein the thickness of the polymer layer is more than 20 μm.

6 . The reinforced glass container according to claim 1 , wherein the thickness of the polymer layer is less than 40 μm.

7 . The reinforced glass container according to claim 1 , wherein the glass container is a vial, an ampoule, a bottle or a cartridge.

8 . The reinforced glass container according to claim 1 , which is for pharmaceutical products.

9 . The reinforced glass container according to claim 1 , wherein the tetrafluoroethylene type polymer contains units based on CF 2 ═CFOCF 2 CF 2 CF 3 .

10 . A method of producing a pharmaceutical container, the method comprising:
exposing the reinforced glass container according to claim 1 to ultraviolet light or an atmosphere at a temperature of at least 200° C. and below the melting temperature of the tetrafluoroethylene type polymer, to obtain a sterilized reinforced glass container, and filling the sterilized reinforced glass container with a pharmaceutical product, followed by sealing to obtain the pharmaceutical container having the pharmaceutical product stored therein.

11 . A method for producing the reinforced glass container according to claim 1 , the method comprising:
applying a liquid composition containing particles of the tetrafluoroethylene type polymer directly to the outer surface of the glass container, and subsequently heating the liquid composition to form the polymer layer, thereby obtaining the reinforced glass container.

12 . The method according to claim 11 , wherein the liquid composition is applied to the outer surface of the glass container by a dip coating method.

13 . The method according to claim 11 , wherein the liquid composition has a viscosity of at most 1000 mPa·s.

Assignees

• Agc Inc

Inventors

• Terada Tatsuya
• NISHI Mai
• Hosoda Tomoya

Classifications

• C09D127/18

  Homopolymers or copolymers of tetrafluoroethene · CPC title

• C08F214/262

  with fluorinated vinyl ethers · CPC title

• C03C17/005 Primary

  Coating the outside · CPC title

• B65D23/0821

  consisting mainly of polymeric materials (B65D23/0828 takes precedence) · CPC title

• A61J1/1468

  Containers characterised by specific material properties · CPC title