公开(公告)号：EP0088773A4

公开(公告)日：1985-04-11

申请号：EP82902708

申请日：1982-09-22

申请人： MB FILLERS AUSTRALIA

发明人： BAKER ALFRED GEORGE ,  BAKER ANDREW JAMES

IPC分类号： C08K7/22 ,  B01J13/02 ,  B01J13/04 ,  C08K7/00 ,  C08K7/16 ,  C09C1/28

CPC分类号： B01J13/043 ,  B01J13/02 ,  C01P2004/34 ,  C01P2004/61 ,  C01P2006/10 ,  C09C1/28 ,  Y10T428/2996

摘要： A hollow microsphere wherein the inner portion of the shell of which comprises the reaction product of a silicate and a first insolubilizing agent, the outer portion of the shell of which comprises the reaction product of a silicate and a second insolubilizing agent and wherein the equivalent ratio of silicate to, respectively, the first and second insolubilizing agent is less in respect of said inner portion than said outer portion.