Glass ceramic panel with a pleasing black decoration applied with a decorative paint
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C03C-008/22
C03C-008/00
C03C-008/14
C03C-008/02
출원번호
UP-0920944
(2004-08-18)
등록번호
US-7795163
(2010-10-04)
우선권정보
DE-103 38 165(2003-08-20)
발명자
/ 주소
Wennemann, Dietmar
Striegler, Harald
출원인 / 주소
Schott AG
대리인 / 주소
Striker, Michael J.
인용정보
피인용 횟수 :
4인용 특허 :
6
초록▼
The black-colored glass ceramic panel has a cooking surface provided with a smooth black decoration by burning in a decorative paint, which contains a colorless zinc-containing glass flux and up to 10 wt. % of a partially coated pigment. The partially coated pigment consists of 20 to 40 wt. % of a b
The black-colored glass ceramic panel has a cooking surface provided with a smooth black decoration by burning in a decorative paint, which contains a colorless zinc-containing glass flux and up to 10 wt. % of a partially coated pigment. The partially coated pigment consists of 20 to 40 wt. % of a black pigment with a grain size of at most 5μ and a grain size distribution characterized by a D50<2μ and 60 to 80% by weight of a zinc-free boro-alumino-silicate glass coating the black pigment. The glass flux consists, in wt. %, of Li2O, 0-5; Na2O, 0-5; K2O, <2; ΣLi2O+Na2O+K2O, 1-10; MgO, 0-3; CaO, 0-4; SrO, 0-4; BaO, 0-4; ZnO, >0-4; B2O3, 15-27; Al2O3, 10-20; SiO2, 43-58; TiO2, 0-3; ZrO2, Sb2O3, 0-2; F, 0-3.
대표청구항▼
We claim: 1. A decorated glass ceramic panel with a cooking surface, said cooking surface being provided with a black decoration by means of a burned-in decorative paint, wherein said decorative paint is applied to said cooking surface to form said black decoration, said glass ceramic panel has a b
We claim: 1. A decorated glass ceramic panel with a cooking surface, said cooking surface being provided with a black decoration by means of a burned-in decorative paint, wherein said decorative paint is applied to said cooking surface to form said black decoration, said glass ceramic panel has a black color and said decorative paint on the cooking surface contains a colorless zinc-containing glass flux and at least one partially coated pigment; wherein said at least one partially coated pigment consists of 20 to 40% by weight of a black pigment and 60 to 80% by weight of a zinc-free boro-alumino-silicate glass, said zinc-free boro-alumino-silicate glass coating said black pigment; wherein said black pigment has a grain size of at most 5μ, and a grain size distribution characterized by a D50<2μ and consists of a Cr—Fe—Co—Mn spinel; and wherein said colorless zinc-containing glass flux consists, in percent by weight, of: Li2O 0-5 Na2O 0-5 K2O <2 Σ Li2O + Na2O + K2O 1-10 MgO 0-3 CaO 0-4 SrO 0-4 BaO 0-4 ZnO 0-4 B2O3 15-27 Al2O3 10-20 SiO2 43-58 TiO2 0-3 ZrO2 0-4 Sb2O3 0-2 F 0-3; wherein said decorative paint consists of said at least one partially coated pigment and said colorless zinc-containing glass flux; and wherein said decorative paint contains said at least one partially coated pigment in an amount of from 9 to 10 percent by weight. 2. The glass ceramic panel as defined in claim 1, which has a composition in percent by weight of: Si2O 62-68 Al2O3 19.5-22.5 Li2O 3.0-4.0 Na2O 0-1.0 K2O 0-1.0 BaO 1.5-3.5 CaO 0-1.0 MgO 0-0.5 ZnO 0.5-2.5 TiO2 1.5-5.0 ZrO2 0-3.0 MnO2 0-0.40 Fe2O3 0-0.20 CoO 0-0.30 NiO 0-0.30 V2O5 0-0.80 Cr2O3 0-0.20 F 0-0.20 Sb2O3 0-2.0 As2O3 0-2.0 ΣNa2O + K2O 0.5-1.5 ΣBaO + CaO 1.5-4.0 ΣTiO2 + ZrO2 3.5-5.5 ΣSb2O3 + As2O3 0.5-2.5. 3. The glass ceramic panel as defined in claim 1, which has a composition in percent by weight of: Li2O 2.5-5.5 Na2O 0-3.0 K2O 0-3.0 Σ Na2O + K2O 0-4.0 MgO 0-3.0 CaO 0-2.5 SrO 0-2.0 BaO 0-3.5 ZnO 0-3.5 Al2O3 18-27 SiO2 52-75 TiO2 1.2-5.5 ZrO2 0-3.0 SnO2 <1.0 Σ TiO2 + ZrO2 + SnO2 2.0-6.0 P2O5 0-8.0 V2O5 0.02-0.6, and at least one coloring ingredient selected from the group consisting of Cr-, Mn-, Fe-, Co-, Ni-, Se- and Cl-compounds for adjustment and assisting in production of a black color shade. 4. The glass ceramic panel as defined in claim 1, wherein said at least partially coated pigment comprises 70% by weight of said zinc-free boro-alumino-silicate coating glass and 30% by weight of said black pigment. 5. The glass ceramic panel as defined in claim 1, wherein the decorative paint is applied in the form of a background texture as a decoration with a roughness Ra≦0.35μ. 6. The glass ceramic panel as defined in claim 1, wherein said decorative paint has a layer thickness of from 1 to 7μ. 7. The decorated glass ceramic panel as defined in claim 1, wherein said Cr—Fe—Co—Mn spinel contains 11% chromium (III), 15% Fe (II/III), 20% cobalt (II) and 20% Manganese (II/III) and is resistant to a temperature at which said decorative paint is burned in. 8. A decorated glass ceramic panel with a cooking surface, said cooking surface being provided with a black decoration by means of a burned-in decorative paint, wherein said decorative paint is applied to said cooking surface to form said black decoration, said glass ceramic panel has a black color and said decorative paint on the cooking surface contains 91 percent by weight of a colorless zinc-containing glass flux and 9 percent by weight of at least one partially coated pigment; wherein said at least one partially coated pigment consists of 20 to 40% by weight of a black pigment and 60 to 80% by weight of a zinc-free boro-alumino-silicate glass, said zinc-free boro-alumino-silicate glass coating said black pigment; wherein said black pigment has a grain size of at most 5μ and a grain size distribution characterized by a D50<2μ and consists of a Cr—Fe—Co—Mn spinel; and wherein said colorless zinc-containing glass flux consists, in percent by weight, of: Li2O 0-5 Na2O 0-5 K2O <2 Σ Li2O + Na2O + K2O 1-10 MgO 0-3 CaO 0-4 SrO 0-4 BaO 0-4 ZnO 0-4 B2O3 15-27 Al2O3 10-20 SiO2 43-58 TiO2 0-3 ZrO2 0-4 Sb2O3 0-2 F 0-3.
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이 특허에 인용된 특허 (6)
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