Colloid systems and wetting agents; subcombinations thereof; pro – Continuous or semicontinuous solid phase – The solid phase contains organic material
Patent
1997-09-11
1999-06-15
Lovering, Richard D.
Colloid systems and wetting agents; subcombinations thereof; pro
Continuous or semicontinuous solid phase
The solid phase contains organic material
252 62, 423335, 427220, 501 12, B01J 1300
Patent
active
059116587
ABSTRACT:
Liquid comprising from 93 to 100 percent by weight alcohol is removed from silica alcogel at subcritical temperature to produce silica aerogel. The silica aerogel produced by the method of the present invention not only has high porosity, but in most instances it also has a narrow distribution of small pore sizes. The silica aerogel is preferably reduced in size so as to form particulate silica aerogel.
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Lovering Richard D.
Morris George D.
PPG Industries Ohio Inc.
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