Aluminosilicate glass and color adapting composition for ceramics
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61C-013/083
A61C-013/00
C03C-008/22
C03C-003/091
출원번호
US-0398885
(2012-02-17)
등록번호
US-8304356
(2012-11-06)
우선권정보
JP-2008-054992 (2008-03-05)
발명자
/ 주소
Fukatani, Yukio
Takahashi, Keiji
Yoshimoto, Ryuichi
출원인 / 주소
Kabushiki Kaisha Shofu
대리인 / 주소
Wenderoth, Lind & Ponack, L.L.P.
인용정보
피인용 횟수 :
1인용 특허 :
14
초록▼
The present invention relates to a color adapting composition used for coloring and color adapting porcelain for ceramic crown such as dental restorations and prosthetics, and aluminosilicate glass appropriate for using in a color adapting composition. More specifically, a color adapting composition
The present invention relates to a color adapting composition used for coloring and color adapting porcelain for ceramic crown such as dental restorations and prosthetics, and aluminosilicate glass appropriate for using in a color adapting composition. More specifically, a color adapting composition for dental porcelains are prepared by blending two or more kinds of glass frits having different sintering temperatures from each other and an inorganic pigment or a colored glass obtained by previously dispersing inorganic pigments in glass.
대표청구항▼
1. A method for manufacturing a porcelain stain, comprising: a Step 1 of forming aluminosilicate glass A having a sintering temperature of 760-820 ° C. and a linear thermal expansion coefficient of 6.0×10−6 K−1−9.0×10−6 K−1 in a range of 25-500 ° C. by fusing a mixed raw material at least 1200 ° C.
1. A method for manufacturing a porcelain stain, comprising: a Step 1 of forming aluminosilicate glass A having a sintering temperature of 760-820 ° C. and a linear thermal expansion coefficient of 6.0×10−6 K−1−9.0×10−6 K−1 in a range of 25-500 ° C. by fusing a mixed raw material at least 1200 ° C. or higher, wherein the mixed raw material comprises the following components:SiO2: 55.0-75.0% by weight,B2O3: 5.0-20.0% by weight,Al2O3: 5.0-15.0% by weight,Li2O : 0.5-1.5% by weight,Na2O : 3.0-8.0% by weight,K2O : 3.0-8.0% by weight,CaO : 1.0-5.0% by weight,MgO : 0.1-1.0% by weight,Sb2O3: 0.1-1.0% by weight;a Step 2 of obtaining a glass lump by cooling a melt of the aluminosilicate glass A, and drying and grinding the glass lump to form glass frit having an average particle size of 3-8 μm;a Step 3 of forming aluminosilicate glass B having a sintering temperature of 800-860 ° C. which is different from by 40° C. or more than that of the aluminosilicate glass A and a linear thermal expansion coefficient of 6.0×10−6 K−1−9.0×10−6 K−1 in a range of 25-500 ° C. by fusing another mixed raw material at least 1200 ° C. or higher, wherein the mixed raw material comprises the following components:SiO2: 55.0-75.0% by weight,B2O3: 5.0-20.0% by weight,Al2O3: 5.0-15.0% by weight,Li2O : 0.5-1.5% by weight,Na2O : 3.0-8.0% by weight,K2O : 3.0-8.0% by weight,CaO : 1.0-5.0% by weight,MgO : 0.1-1.0% by weight,Sb2O3: 0.1-1.0% by weight;a Step 4 of obtaining a glass lump by cooling a melt of the aluminosilicate glass B, drying and grinding the glass lump to form glass frit having an average particle size of 3-8 μm; anda Step 5 of mixing the glass frit obtained in Step 2, the glass frit obtained in Step 4 and a coloring material to manufacture a porcelain stain having a sintering temperature of 760-860 ° C. and a linear thermal expansion coefficient of 6.0×10−6 K−1−9.0×10−6 K−1 in a range of 25-500 ° C. 2. A method for coloring ceramic crown restorations by applying the porcelain stain obtained by the method of claim 1 as an internal stain or an external stain to ceramic crown restorations or metal ceramic crown restorations restored by using an alumina core or a zircornia core and by sintering it to express white bands, stains around cervical portions and proximal surfaces, hair lines, enamel cracks on natural teeth. 3. A method for manufacturing a porcelain stain, comprising: a Step 1 of forming aluminosilicate glass A having a sintering temperature of 760-820 ° C. and a linear thermal expansion coefficient of 6.0×10−6 K−1−9.0×10−6 K−1 in a range of 25-500 ° C. by fusing a mixed raw material at least 1200 ° C. or higher, wherein the mixed raw material comprising the following components:SiO2: 55.0-75.0% by weight,B2O3: 5.0-20.0% by weight,Al2O3: 5.0-15.0% by weight,Li2O : 0.5-1.5% by weight,Na2O : 3.0-8.0% by weight,K2O : 3.0-8.0% by weight,CaO : 1.0-5.0% by weight,MgO : 0.1-1.0% by weight,Sb2O3: 0.1-1.0% by weight;a Step 2 of obtaining a glass lump by cooling a melt of the aluminosilicate glass A, drying and grinding the glass lump to form glass frit having an average particle size of 3-8 μm;a Step 3 of forming aluminosilicate glass B having a sintering temperature of 800-860 ° C. which is different from by 40° C. or more than that of the aluminosilicate glass A and a linear thermal expansion coefficient of 6.0×10−6 K−1−9.0×10−6 K−1 in a range of 25-500 ° C. by fusing another mixed raw material at least 1200 ° C. or higher, wherein the mixed raw material comprising the following components:SiO2: 55.0-75.0% by weight,B2O3: 5.0-20.0% by weight,Al2O3: 5.0-15.0% by weight,Li2O : 0.5-1.5% by weight,Na2O : 3.0-8.0% by weight,K2O : 3.0-8.0% by weight,CaO : 1.0-5.0% by weight,MgO : 0.1-1.0% by weight,Sb2O3: 0.1-1.0% by weight;a Step 4 of obtaining a glass lump by cooling a melt of the aluminosilicate glass B, drying and grinding the glass lump to form glass frit having an average particle size of 3-8 μm;a Step 5-1 of mixing the glass frit obtained in Step 2, the glass frit obtained in Step 4 and a coloring material to form a colored glass frit;a Step 5-2 of mixing the glass frit obtained in Step 2 and the glass frit obtained in Step 4 to form a glass frit; anda Step 6 of mixing the colored glass frit obtained in Step 5-1 and the glass frit obtained in Step 5-2 to manufacture a porcelain stain having a sintering temperature of 780-860 ° C. and a linear thermal expansion coefficient of 6.0×10−6 K−1−9.0×10−6 K−1 in a range of 25-500 ° C. 4. A method for coloring ceramic crown restorations by applying the porcelain stain obtained by the method of claim 3 as an internal stain or an external stain to ceramic crown restorations or metal ceramic crown restorations restored by using an alumina core or a zircornia core and by sintering it to express white bands, stains around cervical portions and proximal surfaces, hair lines, enamel cracks on natural teeth.
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