Evonik Rohm Gmbh

Evonik Operations Gmbh

Evonik Corporation

Evonik Degussa Gmbh

Silko Grimm

Rosario Lizio

Andrea Engel

Hans-Ulrich Petereit

Johannes Vorholz

Anne Benedikt

Matthias Epple

Rima Jaber

Wolfgang Luley

Marc Schneider

Maria Camilla Operti

David Fecher

Min Yang

Gregor Doerdelmann

Rike Nabbefeld

Alexander Henrik Baron Van Asbeck

Andreas Kirchner

Roland Brock

Jürgen Dieker

Markus Rolf Rossmeissl

Gregor Dordelmann

Gregor DÖRDELMANN

A process can be used for preparing nanoparticles containing at least one bio-resorbable polyester. The nanoparticles are in the form of a powder with a Z-Average particle size Din the range of 1 to 450 nm, and with a polydispersity index PDI in the range of 0.01 to 0.5. The process involves emulsion-solvent extraction or emulsion-solvent evaporation, and application of ultrasonic sound.

Process for preparing nanoparticles in the form of a powder comprising a bio-resorbable polyester

A nanoparticle includes a core. The core includes a bio-resorbable polyester and a hydrophilic polymer. The hydrophilic polymer is a portion of the bio-resorbable polyester or a separate polymer. An acylated human lactoferrin-derived peptide is coated onto the core. The acylated human lactoferrin-derived peptide is a peptide with the amino acid sequence SEQ ID NO. 1: KCFQWQRNMRKVRGPPVSCIKR or an amino acid sequence, which does not differ by more than 8 amino acid positions from the sequence SEQ ID NO: 1. The N-terminus of the human lactoferrin-derived peptide is acylated with a C-monoacyl group.

Nanoparticle comprising a bio-resorbable polyester, a hydrophilic polymer and an acylated human lactoferrin-derived peptide

A process for preparing poly(lactide-co-glycolide) copolymer particles with an average particle size in the range of 50-800 nm includes transferring a mixture of poly(lactide-co-glycolide) copolymer, ethanol and carbon dioxide from a first reactor into a second reactor under rapid reduction of the pressure and expansion with phase separation into a gas phase, an ethanol aerosol and an ethanolic suspension containing poly(lactide-co-glycolide) copolymer particles, removing the carbon dioxide gas and the ethanol aerosol from the second reactor, and obtaining the poly(glycolide-co-lactide) copolymer particles in the form of an ethanolic suspension or in dry form from the second reactor.

Process for preparing poly(glycolide-co-lactide) copolymer microparticles

The invention refers to a nanoparticle with a diameter which is the maximum in the nanoparticle size distribution, in the range of 10-300 nm, comprising a) a calcium phosphate nanoparticle core a), b) an active ingredient coating b) on the calcium phosphate nanoparticle core a), c) a lactic acid polymer coating c) on the active ingredient coating b), d) a cationic polymer coating d) on the lactic acid polymer coating c) selected from the group of polyethylene-imines, chitosan and human lactoferrin-derived peptides with a length of 14 to 30 amino acids.

Nanoparticle

Growing community of inventors

Rossdorf, Germany

Silko Grimm