Colouring solution for dental ceramic articles and related methods
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61C-019/06
C09K-003/00
A61K-006/02
C04B-041/50
C04B-041/00
C04B-041/85
A61K-006/00
C04B-111/00
C04B-111/82
출원번호
US-0669846
(2008-07-10)
등록번호
US-10065895
(2018-09-04)
우선권정보
EP-07112920 (2007-07-23)
국제출원번호
PCT/US2008/069595
(2008-07-10)
§371/§102 date
20100120
(20100120)
국제공개번호
WO2009/014903
(2009-01-29)
발명자
/ 주소
Franke, Ruediger
Schechner, Gallus
Hauptmann, Holger
Schnagl, Robert
출원인 / 주소
3M Innovative Properties Company
인용정보
피인용 횟수 :
0인용 특허 :
28
초록▼
The invention relates to a coloring solution for coloring a dental ceramic article, the solution comprising: a solvent and a coloring agent, comprising rare earth element metals or ions being present in the solution in an amount of at least about 0.05 mol/1 solvent and transition metals or ions bein
The invention relates to a coloring solution for coloring a dental ceramic article, the solution comprising: a solvent and a coloring agent, comprising rare earth element metals or ions being present in the solution in an amount of at least about 0.05 mol/1 solvent and transition metals or ions being present in the solution in an amount of about 0.00001 to about 0.05 mol/1 solvent. The invention also relates to a process for coloring dental ceramic articles, dental ceramic articles treated either with the coloring solution or obtainable by a process comprising the step of firing the dental ceramic articles.
대표청구항▼
1. A colouring solution for colouring a dental ceramic article, the solution comprising: a solvent anda colouring agent, comprising a rare earth element metal or ion being present in the solution in an amount of at least about 0.05 mol/l solvent,and a transition metal or ion being different from the
1. A colouring solution for colouring a dental ceramic article, the solution comprising: a solvent anda colouring agent, comprising a rare earth element metal or ion being present in the solution in an amount of at least about 0.05 mol/l solvent,and a transition metal or ion being different from the rare earth element metal or ion and being present in the solution in an amount of about 0.00001 to about 0.03 mol/l solvent; whereinthe solution is transparent to visible light. 2. The colouring solution according to claim 1, wherein the colouring agent further comprises at least one anion selected from the group consisting of Cl−, OAc−, NO3−, NO2−, CO32−, HCO3−, ONC−, SCN−, SO42, SO32−, gluturate, lactate, gluconate, propionate, butyrate, glucuronate, benzoate and phenolate. 3. The colouring solution according to claim 1, wherein the rare earth element metal is selected from the group consisting of La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu and mixtures thereof. 4. The colouring solution according to claim 1, wherein the transition metal is selected from the columns of the Periodic Table of Elements starting with the elements Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu and Zn and the metals listed below those elements and mixtures thereof. 5. The colouring solution according to claim 1, wherein the solvent is selected from the group consisting of water, alcohols, dipolar aprotic liquids, apolar liquids, mixtures of water with alcohols, and mixtures of water and dipolar aprotic liquids. 6. The colouring solution according to claim 1 having at least one of the following features: a dynamic viscosity below about 100 mPa*s at 23° C., orfor water containing solutions a pH-value in the range between about 1 to about 9. 7. The colouring solution according to claim 1 further comprising additives selected from the group consisting of stabilizers, temporary binders, buffers, thixotropic substances and mixtures thereof. 8. The colouring solution according to claim 1 further comprising a complexing agent present in an at least stoichiometric ratio with respect to the metal ion present in the colouring agent. 9. The colouring solution according to claim 8, wherein the complexing agent is selected from the group consisting of crown ethers, cryptands, ethylenediaminetriacetate and its salts, ethylenediaminetetraacetate (EDTA) and its salts, nitrilotriacetate (NTA) and its salts, citric acid and its salts, triethylentetramine, porphin and mixtures thereof. 10. The colouring solution according to claim 1, the colouring solution comprising the rare earth element metal or ion in an amount of about 0.05 to about 1 mol/l solvent,a halogen ion in an amount below about 0.3 mol/l solvent, andan additive in an amount of about 0 to about 15 wt.-% with respect to the total weight of the colouring solution. 11. A process of colouring a dental ceramic article comprising the steps of a) providing a colouring solution according to claim 1 and a dental ceramic article, andb) treating the ceramic article with the colouring solution. 12. The process according to claim 11 further comprising sintering the treated ceramic article to obtain a final density. 13. A dental ceramic article obtained by the process of claim 11, wherein the dental ceramic article comprises ZrO2, Al2O3, or combinations thereof and has the shape of a crown, inlay, onlay, abutment, bridge or implant. 14. A dental ceramic obtained by the process of claim 12, wherein the dental ceramic article has a Weibull strength (sigma 0) of at least about 800 MPa. 15. A process for reducing the sintering distortion of a dental ceramic article, the process comprising: a) providing a colouring solution and a pre-sintered dental ceramic article,b) treating the ceramic article with the colouring solution, andc) sintering the ceramic articlewherein the colouring solution is transparent to visible light and comprises a solvent and a colouring agent, the colouring agent comprising a rare earth element metal or ion and mixtures thereof, the metal or ion being present in an amount of at least about 0.05 mol/l solvent; and a transition metal or ion being different from the rare earth element metal or ion and being present in the solution in an amount of about 0.00001 to about 0.03 mol/l solvent. 16. The process according to claim 11 further comprising drying the treated ceramic article. 17. The process according to claim 12, wherein the dental ceramic article has a density of equal or greater than about 98% compared to the theoretically achievable density when sintered. 18. The dental ceramic article obtained by the process of claim 12, wherein the dental ceramic article has a L* value in the range of about 65 to about 80, an a* value in the range of −1.5 to 4, and a b* value in the range or about 5 to about 32. 19. The colouring solution according to claim 1, wherein at least two different rare earth element metals or ions are present. 20. The colouring solution according to claim 19, wherein the two different rare earth element metals or ions are Er and Pr. 21. The colouring solution according to claim 1 further comprising a complexing agent in an amount from about 2 wt % to about 60 wt % with respect to the total weight of the colouring solution. 22. The colouring solution according to claim 1, wherein the transition metal or ion is present in the solution in an amount of about 0.0001 to about 0.03 mol/l solvent. 23. The colouring solution according to claim 1, wherein the rare earth element metal or ion is present in the solution in an amount of at least about 0.06 mol/l solvent. 24. The colouring solution according to claim 1, wherein the rare earth element metal or ion is present in the solution in an amount of at least about 0.06 mol/l solvent and the transition metal or ion is present in the solution in an amount of about 0.0005 to about 0.02 mol/l solvent.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (28)
Nakabayashi Nobuo (Chiba JPX) Honda Narimichi (Yamaguchi JPX) Nakamura Mitsuo (Tokyo JPX) Sakashita Takeshi (Yamaguchi JPX), Adhesive for ceramics and processes for the bonding of ceramics using same.
Yoshida Masahiro (Hidaka JPX) Kimura Nobuo (Kanagawa JPX) Okamura Hiromichi (Ibaraki JPX), Ivory-colored zirconia sintered body, process for its production and its use.
Yoshida Masahiro (Hidaka JPX) Kimura Nobuo (Oiso JPX) Okamura Hiromichi (Fujishiro JPX), Ivory-colored zirconia sintered body, process for its production and its use.
Sadoun Michael (3 avenue Sverine 92400 Courbevoie FRX) Decker Alain (113 ; avenue Gabriel Pri 91700 Ste Genevieve des Bois FRX), Orthodontic bracket made from zirconium oxide.
Tyszblat Michle (3 avenue Sverine 92400 Courbevoie FRX), Process for the preparation of a dental prosthesis and the prosthesis produced by said process.
Tyszblat Michle (3 avenue Sverine 92400 Courbevoie FRX), Process for the preparation of a dental prosthesis by slight solid phase fritting of a metal oxide based infrastructure.
Hechler Wolfgang (Lautertal DEX) Dietz Johann (Bickenbach DEX) Weigand Manfred (Weiterstadt DEX) Osterried Karl (Dieburg DEX), Process for the production of a coated system.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.