Glazing Material

Patent metadata

Field	Value
Publication number	US-2022127201-A1
Application number	US-202217573080-A
Country	US
Kind code	A1
Filing date	Jan 11, 2022
Priority date	Mar 23, 2017
Publication date	Apr 28, 2022
Grant date	—

Abstract

A glazing material for producing a glazed ceramic body, in which at a first temperature T 1 , the glazing material has a viscosity of more than 10 2.5 Pa·s, in particular more than 10 4.0 Pa·s, preferably more than 10 5.6 Pa·s and particularly preferably more than 10 7.0 Pa·s, and, which at a second temperature T 2 , which is higher than the first temperature, a viscosity of less than 10 9 Pa·s, in particular less than 10 7 Pa·s and preferably less than 10 5.6 Pa·s. The glazing material can be used for glazing a non-densely sintered substrate material.

First claim

1 . A glazing material for producing a glazed ceramic body, in which, at a first temperature T 1 , the glazing material has a viscosity of more than 10 2.5 Pa·s and, at a second temperature T 2 , which is higher than the first temperature T 1 , a viscosity of less than 10 9 Pa·s.

2 . The glazing material according to claim 1 , in which, at the temperature T 1 , the glazing material has a viscosity of more than 10 5.6 Pa·s and, at the temperature T 2 , a viscosity of less than 10 5.6 Pa·s.

3 . The glazing material according to claim 1 , in which, at the temperature T 1 , the glazing material has a viscosity of more than 10 7.0 Pa·s and, at the temperature T 2 , a viscosity of less than 10 5.6 Pa·s.

4 . The glazing material according to claim 1 , in which, at a temperature of 950° C., the glazing material has a viscosity of more than 10 2.5 Pa·s, at a temperature of 1300° C., a viscosity of more than 10 2.5 Pa·s and, at a temperature of 1450° C., a viscosity of less than 10 9 Pa·s.

5 . The glazing material according to claim 1 , in which, at a temperature of 950° C., the glazing material has a viscosity of more than 10 5.6 Pa·s, at a temperature of 1300° C., a viscosity of more than 10 4.0 Pa·s and, at a temperature of 1450° C., a viscosity of less than 10 5.6 Pa·s.

6 . The glazing material according to claim 1 , in which, at a temperature of 700° C., the glazing material has a viscosity of more than 10 2.5 Pa·s, at a temperature of 900° C., a viscosity of more than 10 2.5 Pa·s and, at a temperature of 1100° C., a viscosity of less than 10 9 Pa·s.

7 . The glazing material according to claim 1 , in which, at a temperature of 700° C., the glazing material has a viscosity of more than 10 5.6 Pa·s, at a temperature of 900° C., a viscosity of more than 10 4.0 Pa·s and, at a temperature of 1100° C., a viscosity of less than 10 5.6 Pa·s.

8 . The glazing material according to claim 1 , in which the glazing material comprises a frit, which comprises SiO 2 , Al 2 O 3 and K 2 O and/or Na 2 O.

9 . The glazing material according to claim 1 , in which the glazing material comprises at least one of the following components in the given amounts:

Component
wt.- %

SiO 2
50.0 to 80.0

Al 2 O 3
10.0 to 30.0

K 2 O
0 to 20.0

Na 2 O
0 to 10.0

CaO
0 to 10.0

BaO
0 to 10.0.

10 . The glazing material according to claim 6 , in which the glazing material comprises at least one of the following components in the given amounts:

Component
wt.- %

SiO 2
60.0 to 70.0

Al 2 O 3
15.0 to 25.0

K 2 O
5.0 to 15.0

Na 2 O
0.5 to 5.0

CaO
0.1 to 1.0

BaO
0.1 to 1.0.

11 . The glazing material according to claim 1 , in which the glazing material is in the form of a powder, a slip, a spray or a lacquer or is incorporated into a film or an adhesive strip.

12 . The glazing material according to claim 1 , in which the glazing material further comprises at least one carrier and/or solvent.

Assignees

• Ivoclar Vivadent Ag

Inventors

• Rothbrust Frank
• Hengst Ronny
• Krolikowski Sebastian
• Ritzberger Christian
• Tauch Diana

Classifications

• C03C2205/06

  for dental use · CPC title

• C03C4/0021

  for dental use · CPC title

• C03C2209/00

  Compositions specially applicable for the manufacture of vitreous glazes · CPC title

• C04B2201/10

  for the viscosity · CPC title

• C03C3/083

  containing aluminium oxide or an iron compound · CPC title