Low iron, high redox ratio, and high iron, high redox ratio, soda-lime-silica glasses and methods of making same

Patent metadata

Field	Value
Publication number	US-12577145-B2
Application number	US-202318370422-A
Country	US
Kind code	B2
Filing date	Sep 20, 2023
Priority date	Apr 15, 2013
Publication date	Mar 17, 2026
Grant date	Mar 17, 2026

Abstract

A glass has a basic soda-lime-silica glass portion, and a colorant portion, the colorant portion including total iron as Fe 2 O 3 in the range of at least 0.02 to no more than 0.10 weight percent, a redox ratio in the range of 0.20 to 0.6, and tin metal providing tin in an amount within the range of greater than 0.005 to 5.0 weight percent; the glass product has a tin side and an opposite air side, said tin side of the glass having a higher concentration of tin than the air side, the air side having a uniform concentration of tin from the air side of the glass product towards the tin side of the glass product.

First claim

The invention claimed is:

1 . A glass, comprising:
a basic soda-lime-silica glass portion, wherein the basic soda-lime-silica glass portion comprises:

SiO 2
65-80 wt. %

Na 2 O
10-20 wt. %

CaO
 5-15 wt. %

MgO
  0-8 wt. %

Al 2 O 3
  0-5 wt. %

K 2 O
   0-5 wt. %;

a colorant portion;
total iron as Fe 2 O 3 in the range of greater than 0.02 to less than 0.10 weight percent;
a redox ratio in the range of 0.5 to 0.6, and
tin metal providing tin in an amount within the range of greater than 0.005 to 5.0 weight percent;
wherein the glass product has a tin side and an opposite air side, said tin side of the glass having a higher concentration of tin than the air side, the air side having a uniform concentration of tin from the air side of the glass product towards the tin side of the glass product.

2 . The glass according to claim 1 , wherein the colorant portion is selected from the group consisting of CoO, Se, NiO, Cl, V 2 O 5 , CeO 2 , Cr 2 O 3 , TiO 2 , Er 2 O 3 ; Nd 2 O 3 , MnO 2 , La 2 O 3 , CuO, and combinations thereof.

3 . The glass according to claim 2 , wherein the colorant portion comprises CoO, Nd 2 O 3 , CuO, or combinations thereof.

4 . The glass according to claim 1 , wherein the tin metal provides tin in an amount within the range of 0.1-4 weight percent.

5 . The glass according to claim 4 , wherein the tin metal provides tin in an amount within the range of 0.4-3 weight percent.

6 . The glass according to claim 1 , wherein the glass product, having a thickness of 2 mm to 25 mm has an LTA of greater than or equal to 85%.

7 . The glass according to claim 6 , wherein the glass product has an LTA of at least 91%.

8 . The glass according to claim 1 , wherein the glass product having a thickness of 2 mm to 25 mm has a dominant wavelength in the range of 480 to 510 nanometers.

9 . The glass according to claim 1 , wherein the glass product has an excitation purity in the range of 0.10 to 0.15.

10 . The glass according to claim 1 , wherein the glass product having a thickness of 2 mm to 25 mm has a TSUV in the range of 85 to 93%.

11 . The glass according to claim 1 , wherein the glass product having a thickness of 2 mm to 25 mm has a TSIR in the range of 85 to 90%.

12 . The glass according to claim 1 , wherein the glass product having a thickness of 2 mm to 25 mm has a TSET in the range of 87 to 91% at a thickness of 5.6 mm.

13 . The glass according to claim 1 , wherein the glass product has a melting temperature of at most 2650° F.

Assignees

• Vitro Flat Glass Llc

Inventors

• Naylor Mark O
• Jansen Lawrence E
• Shelestak Larry J

Classifications

• C03C3/095

  containing rare earths · CPC title

• C03C4/02

  for coloured glass · CPC title

• C03C4/0092

  for glass with improved high visible transmittance, e.g. extra-clear glass · CPC title

• C03B18/12

  Making multilayer, coloured or armoured glass (chemical aspects C03C) · CPC title

• C03C3/087 Primary

  containing calcium oxide, e.g. common sheet or container glass · CPC title