发明名称 |
Hollow borosilicate microspheres and method of making |
摘要 |
The present invention provides hollow borosilicate microspheres having a mean particle size between 15 and 20 microns, and a true density below 0.25 g/cc. The invention also provides a method for making such microspheres comprising spray drying a solution of sodium silicate and sodium borate in a spray tower to form a precursor, milling the precursor, and heating the crushed precursor to a temperature in excess of 600 DEG F. to form hollow borosilicate microspheres.
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申请公布号 |
US5534348(A) |
申请公布日期 |
1996.07.09 |
申请号 |
US19950411394 |
申请日期 |
1995.03.28 |
申请人 |
PQ CORPORATION |
发明人 |
MILLER, J. STANLEY;THOMPSON, REGINALD |
分类号 |
C01B35/10;B01J13/04;C03B19/10;C03C11/00;C04B18/02;C08K3/34;C08K7/16;C08K7/22;(IPC1-7):B32B9/00 |
主分类号 |
C01B35/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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