Use of polyglycerol aliphatic ether emulsifiers in making high internal phase emulsions that can be polymerized to provide absorbent foams
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United States of America Patent
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Mar 19, 1996
Issued Date -
N/A
app pub date -
Aug 9, 1995
filing date -
Jan 10, 1995
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Abstract
A process for preparing high internal phase emulsions (HIPE) that can be polymerized to provide flexible, microporous, open-celled polymeric foam materials capable of absorbing aqueous fluids, especially aqueous body fluids such as urine. The HIPE is prepared using certain polyglycerol aliphatic ether emulsifiers that are less chemically complex and variable in composition than many prior HIPE emulsifiers, have higher levels of the desired interfacially active components, and have lower levels of components (e.g., sludge) that are insoluble or insufficiently soluble in the oil phase used to prepare the HIPE. These polyglycerol aliphatic ether emulsifiers provide HIPE having relatively uniform sized water droplets dispersed in the continuous oil phase.
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