Method of preparation of porous polyester particles
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United States of America Patent
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Aug 24, 2004
Grant Date -
Jul 10, 2003
app pub date -
Dec 20, 2001
filing date -
Dec 20, 2001
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Abstract
The present invention relates to a method of forming porous particles comprising preparing a mixture of an organic phase and an aqueous phase comprising an unsaturated polyester, a water immiscible organic solvent, at least one organic-soluble ethylenically unsaturated monomer, and initiator, subjecting said mixture to high energy emulsification, initiating crosslinking of said polyester after emulsification, removing said water immiscible organic solvent to recover porous polyester particles.
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