Antimicrobial glass compositions, glasses and polymeric articles incorporating the same

Patent metadata

Field	Value
Publication number	US-2018317496-A1
Application number	US-201816037762-A
Country	US
Kind code	A1
Filing date	Jul 17, 2018
Priority date	Feb 19, 2014
Publication date	Nov 8, 2018
Grant date	—

Abstract

Embodiments of the present invention pertain to antimicrobial glass compositions, glasses and articles. The articles include a glass, which may include a glass phase and a cuprite phase. In other embodiments, the glasses include as plurality of Cu 1+ ions, a degradable phase including B 2 O 3 , P 2 O 5 and K 2 O and a durable phase including SiO 2 . Other embodiments include glasses having a plurality of Cu 1+ ions disposed on the surface of the glass and in the glass network and/or the glass matrix. The article may also include a polymer. The glasses and articles disclosed herein exhibit a 2 log reduction or greater in a concentration of at least one of Staphylococcus aureus, Enterobacter aerogenes, Pseudomonas aeruginosa bacteria, Methicillin Resistant Staphylococcus aureus , and E. coli , under the EPA Test Method for Efficacy of Copper Alloy as a Sanitizer testing conditions and under Modified JIS Z 2801 for Bacteria testing conditions. In some embodiments, the glass and articles exhibit a 2 log reduction or greater in a concentration of Murine Norovirus under Modified JIS Z 2801 Test for Viruses testing conditions.

First claim

What is claimed is:

1 . An architectural wall comprising: a carrier; and a glass comprising, in mole percent, SiO 2 in the range from about 40 to about 70, at least one of B 2 O 3 , P 2 O 5 , alkaline earth oxides, and R 2 O, and a plurality of Cu 1+ ions,
wherein a portion of the plurality of Cu 1+ ions leach from the glass when the glass is exposed to or in contact with a leachate.

2 . The architectural wall of claim 1 , wherein the carrier comprises an inorganic material, a binder or a solvent.

3 . The architectural wall of claim 1 , wherein the glass is provided as particulates or as fibers.

4 . The architectural wall of claim 1 , wherein the leachate is an acid, water, or humidity.

5 . The architectural coating of claim 1 , further exhibiting resistance against bacterial contamination by Pseudomonas aeruginosa and Enterobacter aerogenes as evidenced by no bacterial recovery under ASTM D2574, Standard test for resistance of emulsion paints in the container to attack by microorganisms.

6 . The architectural wall of claim 1 , further exhibiting resistance to fungi as evidenced by no observed growth every seven-days and after a twenty-eight day period under ASTM D5590, standard test method for determining the resistance of paint films and related coatings to fungal defacement by accelerated four-week agar plate assay.

7 . The architectural wall of claim 1 , further exhibiting resistance to algae as evidenced by no observed growth every seven-days and after a twenty-one day period under ASTM D5589, standard test method for determining the resistance of paint films and related coatings to algal defacement.

8 . The architectural wall of claim 1 , further exhibiting any one or more of
a 2 log reduction or greater in a concentration of any one or more of Staphylococcus aureus, Enterobacter aerogenes, Pseudomonas aeruginosa , Methicillin Resistant Staphylococcus aureus , and E. coli , under EPA Test Method for Efficacy of Copper Alloy as a Sanitizer testing conditions, a 4 log reduction or greater in a concentration of any one or more of Staphylococcus aureus, Enterobacter aerogenes, Pseudomonas aeruginosa bacteria, Methicillin Resistant Staphylococcus aureus , and E. coli , under JIS Z 2801 (2000) testing conditions or a Modified JIS Z 2801 Test for Bacteria, and a 4 log reduction or greater in a concentration of Murine Norovirus under a Modified JIS Z 2801 Test for Viruses.

9 . The architectural wall of claim 1 , wherein the plurality of Cu 1+ ions are provided in the glass as a copper-containing oxide.

10 . The architectural wall of claim 8 , wherein the copper-containing oxide comprises at least one of CuO and Cu 2 O.

11 . The architectural wall of claim 1 , wherein the glass comprises Al 2 O 3 in an amount of about 5 mole percent or less.

12 . The architectural wall of claim 1 , wherein the glass comprises an irregular shape.

13 . The architectural wall of claim 1 , wherein the inorganic material carrier comprises talc, clay, mica, cement or mud.

14 . An architectural wall comprising: an inorganic material carrier; and a glass, wherein the glass comprises a degradable phase and a durable phase, wherein the degradable phase comprises a plurality of Cu 1+ ions and at least one of B 2 O 3 , P 2 O 5 and R 2 O, and wherein the durable phase comprises SiO 2 .

15 . The architectural coating of claim 14 , further exhibiting resistance against bacterial contamination by Pseudomonas aeruginosa and Enterobacter aerogenes as evidenced by no bacterial recovery under ASTM D2574, Standard test for resistance of emulsion paints in the container to attack by microorganisms.

16 . The architectural wall of claim 14 , further exhibiting resistance to fungi as evidenced by no observed growth every seven-days and after a twenty-eight day period under ASTM D5590, standard test method for determining the resistance of paint films and related coatings to fungal defacement by accelerated four-week agar plate assay.

17 . The architectural wall of claim 14 , further exhibiting resistance to algae as evidenced by no observed growth every seven-days and after a twenty-one day period under ASTM D5589, standard test method for determining the resistance of paint films and related coatings to algal defacement.

18 . The architectural wall of claim 14 , further exhibiting any one or more of
a 2 log reduction or greater in a concentration of any one or more of Staphylococcus aureus, Enterobacter aerogenes, Pseudomonas aeruginosa bacteria, Methicillin Resistant Staphylococcus aureus , and E. coli , under the EPA Test Method for Efficacy of Copper Alloy as a Sanitizer testing conditions, a 4 log reduction or greater in a concentration of any one or more of Staphylococcus aureus, Enterobacter aerogenes, Pseudomonas aeruginosa bacteria, Methicillin Resistant Staphylococcus aureus , and E. coli , under the JIS Z 2801 (2000) testing conditions or a Modified JIS Z 2801 Test for Bacteria, and a 4 log reduction or greater in a concentration of Murine Norovirus , under a Modified JIS Z 2801 Test for Viruses.

19 . The architectural wall of claim 14 , wherein the glass comprises:
SiO 2 in the range from about 40 to about 70, Al 2 O 3 in the range from about 0 to about 20, a copper-containing oxide in the range from about 10 to about 50, CaO in the range from about 0 to about 15, MgO in the range from about 0 to about 15, P 2 O 5 in the range from about 0 to about 25, B 2 O 3 in the range from about 0 to about 25, and R 2 O in the range from about 0 to about 20.

20 . The architectural wall of claim 14 , wherein the inorganic material carrier comprises talc, clay, mica, cement or mud.

Assignees

• Corning Inc

Inventors

• Bookbinder Dana Craig
• Calabrese Gary Stephen
• Gross Timothy Michael
• Jiang Dayue
• Wang Jianguo

Classifications

• C03C12/00

  Powdered glass (C03C8/02 takes precedence); Bead compositions · CPC title

• C03C3/083

  containing aluminium oxide or an iron compound · CPC title

• C03C3/062

  with less than 40% silica by weight · CPC title

• A01N59/14

  Boron; Compounds thereof · CPC title

• C03C3/097

  containing phosphorus, niobium or tantalum · CPC title