发明名称 |
Porous bodies and method of production thereof |
摘要 |
The invention provides a method for preparing water dispersible or water soluble porous bodies and the bodies themselves The bodies have an intrusion volume as measured by mercury porosimetry of at least about 3 ml/g and comprise a three dimensional open-cell lattice containing less than 10% by weight of a water soluble polymeric material and 5 to 90% by weight of a surfactant, with the proviso that said porous bodies are not spherical beads having an average bead diameter of 0.2 to 5 mm. The method comprises the steps of: a) providing an intimate mixture of the polymeric material and the surfactant in a liquid medium b) providing a fluid freezing medium at a temperature effective for rapidly freezing the liquid medium; c) cooling the liquid medium with the fluid freezing medium at a temperature below the freezing point of the liquid medium for a period effective to rapidly freeze the liquid medium; and d) freeze-drying the frozen liquid medium to form the porous bodies by removal of the liquid medium by sublimation. |
申请公布号 |
US8242182(B2) |
申请公布日期 |
2012.08.14 |
申请号 |
US20070587732 |
申请日期 |
2007.05.17 |
申请人 |
COOPER ANDREW IAN;DUNCALF DAVID JOHN;FOSTER ALISON JAYNE;RANNARD STEVEN PAUL;ZHANG HAIFEI;IOTA NANOSOLUTIONS LIMITED |
发明人 |
COOPER ANDREW IAN;DUNCALF DAVID JOHN;FOSTER ALISON JAYNE;RANNARD STEVEN PAUL;ZHANG HAIFEI |
分类号 |
C08J9/28;C08J9/00;C08J9/16;C11D3/22;C11D3/37;C11D11/00;C11D17/00;C11D17/06 |
主分类号 |
C08J9/28 |
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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