NOVEL CALIXARENE BASED DISPERSIBLE COLLOIDAL SYSTEMS IN THE FORM OF NANOPARTICLES

A water dispersible colloidal system in the form of generally spherical matr ix type particles and of sizes typically in the range of from 50 to 500 nm, called nanoparticles, and a process for the preparation of such systems. The system is characterized in that the nanoparticles comprise at least on...

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Bibliographische Detailangaben
Hauptverfasser:	COLEMAN, ANTHONY, GORELOFF, PHILIPPE JEAN-BORIS
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY DERIVATIVES THEREOF HUMAN NECESSITIES HYGIENE MEDICAL OR VETERINARY SCIENCE METALLURGY NUCLEIC ACIDS NUCLEOSIDES NUCLEOTIDES ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES SPECIFIC USE OF COSMETICS OR SIMILAR TOILETPREPARATIONS SUGARS THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	A water dispersible colloidal system in the form of generally spherical matr ix type particles and of sizes typically in the range of from 50 to 500 nm, called nanoparticles, and a process for the preparation of such systems. The system is characterized in that the nanoparticles comprise at least one amphiphilically modified calixarene. The water dispersion contains at least one active component such as a cosmetic, a pharmaceutical compound or other biologically active substances, foods, beverages, etc. enclosed within the nanoparticles, in the outer aqueous phase, or in both. The systems show outstanding properties, especially long-life stability even at elevated la temperatures.