发明名称 |
POROUS MATERIALS AND METHOD OF PRODUCTION THEREOF |
摘要 |
<p>Water dispersible or water soluble porous bodies comprising a three dimensional open-cell lattice containing 10 to 95 % by weight of a polymeric material which is soluble in water, and, less than 5 % by weight of a surfactant, said porous bodies having an intrusion volume as measured by mercury porosimetry (as hereinafter described) of at least about 3 ml/g, and , with the proviso that said porous bodies are not spherical beads having an average bead diameter of 0.2 to 5mm. And a method for making the same comprising the steps of: providing an intimate mixture of the polymeric material and any surfactant in a liquid medium: providing a fluid freezing medium at a temperature effective for rapidly freezing the liquid medium; 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 freeze-drying the frozen liquid medium to form the porous bodies by removal of the liquid medium by sublimation.</S DOAB></p> |
申请公布号 |
CA2552556(A1) |
申请公布日期 |
2005.08.11 |
申请号 |
CA20052552556 |
申请日期 |
2005.01.28 |
申请人 |
UNILEVER PLC |
发明人 |
FOSTER, ALISON JAYNE;DUNCALF, DAVID;COOPER, ANDREW IAN;ZHANG, HAIFEI;RANNARD, STEVEN PAUL |
分类号 |
C08J9/16;C08J9/28;C11D3/22;C11D3/37;C11D11/00;C11D17/00;C11D17/06 |
主分类号 |
C08J9/16 |
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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