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2. 发明授权

US4665039A Porous glass, process for its production and glass material used for the production 失效
标题翻译：多孔玻璃，其生产工艺和用于生产的玻璃材料
公开(公告)号：US4665039A
公开(公告)日：1987-05-12
申请号：US788578
申请日：1985-10-17
申请人： Yoshinori Kokubu , Jiro Chiba , Kozo Saita
发明人： Yoshinori Kokubu , Jiro Chiba , Kozo Saita
IPC分类号： C03C3/091 , B01D71/04 , C03B20/00 , C03C3/093 , C03C3/11 , C03C11/00
CPC分类号： C03C11/005 , B01D71/04 , C03C3/093
摘要： A process for producing a porous glass which comprises forming a shaped product of borosilicate glass having a predetermined shape, heat-treating the shaped product for phase separation to form a silica rich insoluble phase and an alkali and boric oxide rich soluble phase, leaching out the soluble phase from the insoluble phase with an acid or an alkali to obtain a porous glass, wherein said shaped product of borosilicate glass is composed essentially of from 45 to 67% by weight of SiO.sub.2, from 0.5 to 10% by weight of Al.sub.2 O.sub.3, from 10 to 30% by weight of B.sub.2 O.sub.3, from 0.5 to 8% by weight of Na.sub.2 O, from 0.1 to 8% by weight of K.sub.2 O+Li.sub.2 O+Cs.sub.2 O, from 0.5 to 7% by weight of CaO, from 0.5 to 15% by weight of MgO+BaO+SrO, from 0 to 10% by weight of ZrO.sub.2 +TiO.sub.2 and from 0.03 to 3% by weight of F+SO.sub.3 +Cl+As.sub.2 O.sub.3 +Sb.sub.2 O.sub.3.
摘要翻译：一种多孔玻璃的制造方法，其特征在于，包括形成具有规定形状的硼硅酸盐玻璃的成形体，对成形体进行相分离处理，形成富含二氧化硅的不溶相和富碱性和富氧化硼的溶解相，可溶性相从不溶相与酸或碱反应获得多孔玻璃，其中硼硅酸盐玻璃的成型产物基本上由45-67％（重量）的SiO 2，0.5-10％（重量）的Al 2 O 3， 10〜30重量％的B 2 O 3，0.5〜8重量％的Na 2 O，0.1〜8重量％的K 2 O + Li 2 O + Cs 2 O，0.5〜7重量％的CaO，0.5〜15重量％的MgO + BaO + SrO，0〜10重量％的ZrO 2 + TiO 2和0.03〜3重量％的F + SO 3 + Cl + As 2 O 3 + Sb 2 O 3。

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