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High capacity diketopiperazine microparticles and methods

  • US 10,130,709 B2
  • Filed: 05/11/2016
  • Issued: 11/20/2018
  • Est. Priority Date: 06/17/2011
  • Status: Active Grant
First Claim
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1. A method of synthesizing fumaryl diketopiperazine microparticles, the method comprising:

  • feeding equal masses of a first solution comprising about 11 wt % to about 12 wt % acetic acid and a second solution comprising about 2.75 wt % fumaryl diketopiperazine solutions and containing a surfactant at a concentration of 0.05 wt % at a temperature of about 22°

    C. through a high shear mixer, andcollecting the fumaryl diketopiperazine microparticles.

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