公开(公告)号：US4716029A

公开(公告)日：1987-12-29

申请号：US809049

申请日：1985-12-16

申请人： Yasuo Oguri ,  Junji Saito ,  Naoto Kijima

发明人： Yasuo Oguri ,  Junji Saito ,  Naoto Kijima

IPC分类号： C30B29/10 ,  C01F7/02 ,  C01F7/44 ,  C30B7/00

CPC分类号： C30B29/22 ,  C01F7/448 ,  C30B7/00 ,  C01P2004/30 ,  C01P2004/54 ,  C01P2004/62

摘要： A boehmite having an orthorhombic crystal form in which the ratio of the maximum length in the direction of the a-axis of the crystal to the distance between the opposing crystal faces perpendicular to the c-axis of said crystal is at least 10, said maximum length in the direction of the a-axis of the crystal is at least 2500 .ANG. and said distance between the opposing faces perpendicular to the c-axis of said crystal is 250-900 .ANG..

公开(公告)号：US4629618A

公开(公告)日：1986-12-16

申请号：US840543

申请日：1986-03-17

申请人： Yasuo Oguri ,  Junji Saito ,  Naoto Kijima

发明人： Yasuo Oguri ,  Junji Saito ,  Naoto Kijima

IPC分类号： C30B29/10 ,  C01F7/02 ,  C01F7/44 ,  C30B7/00

CPC分类号： C30B29/22 ,  C01F7/448 ,  C30B7/00 ,  C01P2004/30 ,  C01P2004/54 ,  C01P2004/62

摘要： A boehmite having a crystal form wherein the ratio of the maximum length in the direction of the a-axis to the distance between the opposing crystal faces perpendicular to the c-axis is at least 10.

摘要翻译： 具有晶体形式的勃姆石，其中a轴方向上的最大长度与垂直于c轴的相对晶面之间的距离的比率至少为10。