Polymer nanoparticle freeze-dried product, and preparation method therefor
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United States of America Patent
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Sep 8, 2020
Grant Date -
Jan 4, 2018
app pub date -
Dec 28, 2015
filing date -
Dec 30, 2014
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Abstract
The present invention relates to a polymer nanoparticle freeze-dried product, and a preparation method therefor, the polymer nanoparticle freeze-dried product being obtainable by treating, through a freeze-drying process comprising an annealing step, a polymer nanoparticle aqueous solution comprising an amphiphilic block copolymer, a polylactic acid derivative having a carboxyl terminal group, and a freeze-drying adjuvant, wherein the polymer nanoparticle freeze-dried product is reconstituted within five minutes upon reconstitution by means of an aqueous solvent under atmospheric pressure.
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