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公开(公告)号：EP1245548A1
公开(公告)日：2002-10-02
申请号：EP01900262.5
申请日：2001-01-05
发明人： HOSHIKAWA, Takeshi, Res. & Dev. Ctr. Yamamoto , YAMAZOE, Masatoshi, Res. & Dev. Ctr. Yamamoto , Yamamoto, Hirohisa, Yamamoto Precious Metal Co. L , ANRAKU, Teruo, Yamamoto Precious Metal Co. Ltd.
CPC分类号： C03C8/14 , A61K6/0005 , A61K6/0008 , A61K6/0215 , A61K6/0235 , A61K6/024 , A61K6/026 , A61K6/0273 , C03C3/091 , C03C4/0021 , C03C8/02 , C03C10/0018 , C03C14/004 , A61K6/083 , C08L29/04 , A61K6/087 , C08L71/02
摘要： The present invention provides a method for preparing a glass-ceramic containing leucite crystals, comprising the steps of: mixing (1) a glassy material comprising 53 to 65 wt.% of SiO 2 , 13 to 23 wt.% of Al 2 O 3 , 9 to 20 wt.% of K 2 O and 6 to 12 wt.% of Na 2 O and (2) synthetic leucite seed crystals comprising 53 to 64 wt.% of SiO 2 , 19 to 27 wt.% of Al 2 O 3 and 17 to 25 wt.% of K 2 O, and heat-treating the mixture at 750 to 950°C for 1 to 5 hours; and a dental porcelain powder and a metal-ceramic restoration both comprising a glass-ceramic prepared by the method. The porcelain comprising the glass-ceramic prepared by the method is substantially free of opacification and decrease in the coefficient of thermal expansion, during fusion-bonding to a metal frame.
摘要翻译： 本发明提供一种制备含有白云石晶体的玻璃陶瓷的方法，包括以下步骤：将（1）包含53至65重量％的SiO 2，13至23重量％的Al 2 O 3，9至20的玻璃状材料 K 2 O的重量百分比和6至12重量％的Na 2 O和（2）包含53至64重量％的SiO 2，19至27重量％的Al 2 O 3和17至25重量％的K 2 O的合成白云母晶种， 并将混合物在750〜950℃下热处理1〜5小时; 以及包括通过该方法制备的玻璃陶瓷的牙科瓷粉和金属陶瓷修复体。 包含通过该方法制备的玻璃陶瓷的瓷器在熔融粘合到金属框架期间基本上没有不透明度并且降低了热膨胀系数。
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公开(公告)号：EP1245548B1
公开(公告)日：2006-09-13
申请号：EP01900262.5
申请日：2001-01-05
发明人： HOSHIKAWA, Takeshi, Res. & Dev. Ctr. Yamamoto , YAMAZOE, Masatoshi, Res. & Dev. Ctr. Yamamoto , YAMAMOTO, Hirohisa, Yamamoto Precious Metal Co.Ltd , ANRAKU, Teruo, Yamamoto Precious Metal Co. Ltd.
CPC分类号： C03C8/14 , A61K6/0005 , A61K6/0008 , A61K6/0215 , A61K6/0235 , A61K6/024 , A61K6/026 , A61K6/0273 , C03C3/091 , C03C4/0021 , C03C8/02 , C03C10/0018 , C03C14/004 , A61K6/083 , C08L29/04 , A61K6/087 , C08L71/02
摘要： A method for producing a glass-ceramic containing lusite crystals which comprises admixing (1) a glass material containing 53 to 65 wt % of SiO2, 13 to 23 wt % of Al2O3, 9 to 20 wt % of K2O and 6 to 12 wt % of Na2O with (2) a synthetic leucite seed crystal containing 53 to 64 wt % of SiO2, 19 to 27 wt % of Al2O3 and 17 to 25 wt % of K2O, and then subjecting the resultant mixture to a heat treatment at 750 to 950?C for 1 to 5 hr; and a dental porcelain powder and a dental metal-ceramic reparative product which comprise a glass-ceramic prepared by using the method. The dental porcelain powder is substantially free from the decrease of a thermal expansion coefficient and the occurrence of opacification during the operation of fusing it to a metal frame.
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