Title:
SOLUTION FOR COLORING ZIRCONIA
Document Type and Number:
WIPO Patent Application WO/2020/138163
Kind Code:
A1
Abstract:
The present invention provides a solution for coloring zirconia, which, when being used on pre-sintered zirconia, results in little difference in color between before and after sintering so as to enable accurate prediction of post-sintering color tone. The present invention pertains to a zirconia coloring solution which comprises: a colorant (A) that is decolorized after sintering of zirconia; and a metal ion solution (B), wherein when zirconia is dyed with said zirconia coloring solution and then subjected to sintering, the difference in color between pre-sintering and post-sintering satisfies ΔL*≤5.8, Δa*≤2.4, and Δb*≤4.3.
Inventors:
TAJIMA YUTA (JP)
Application Number:
PCT/JP2019/050814
Publication Date:
July 02, 2020
Filing Date:
December 25, 2019
Export Citation:
Assignee:
KURARAY NORITAKE DENTAL INC (JP)
International Classes:
C04B41/87; A61C5/77; A61C13/083; C09B11/12; C09B29/18; C09B29/46; C09B61/00
Foreign References:
| JP2002536280A | 2002-10-29 | |||
| JP2017193492A | 2017-10-26 | |||
| JP2010534245A | 2010-11-04 | |||
| JP2015536904A | 2015-12-24 | |||
| JP2015532629A | 2015-11-12 |
Other References:
See also references of EP 3904315A4
Attorney, Agent or Firm:
KAMADA Koichi et al. (JP)
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