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Macromolecular microparticles and methods of production

  • US 5,578,709 A
  • Filed: 03/04/1994
  • Issued: 11/26/1996
  • Est. Priority Date: 03/09/1993
  • Status: Expired due to Term
First Claim
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1. A method for making microparticles having uniform size comprising the steps of:

  • a) combining a solution containing a macromolecule with a solution containing both polyvinylpyrrolidone and polyethylene glycol to produce a reaction solution;

    b) incubating the reaction solution at a predetermined temperature greater than room temperature for a sufficient amount of time to form microparticles; and

    c) separating the microparticles from the reaction solution.

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