Sulfated nonionic block copolymer surfactants as stabilizer coatings for nanoparticle compositions
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United States of America Patent
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Oct 29, 1996
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N/A
app pub date -
Jan 24, 1995
filing date -
Jan 24, 1995
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Abstract
This invention provides a composition comprised of nanoparticles containing a therapeutic or diagnostic agent having a block copolymer linked to at least one anionic group as a surface modifier adsorbed on the surface thereof and a method of making such nanoparticles. The compositions exhibit unexpectedly improved autoclave stability, reduced macrophage uptake, improved toxicological profiles and facilitate particle size reduction such that milling time can be reduced and/or sterile filtration of the nanoparticles can be accomplished.
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