Title:
PROCESS FOR THE PREPARATION OF WATER-IN-OIL AND OIL-IN-WATER NANOEMULSIONS
Document Type and Number:
WIPO Patent Application WO2007112967
Kind Code:
A8
Abstract:
Process for the preparation of a water-in-oil or oil-in- water nanoemulsion wherein the dispersed phase is distributed in the dispersing phase in the form of droplets having a diameter ranging from 1 to 500 nm, comprising: 1) the preparation of a homogeneous water/oil blend (I) characterized by an interface tension lower than 1 mN/m, comprising water in an amount of 30 to 70% by weight, at least two surface-active agents having a different HLB, selected from non-ionic, anionic, polymeric surface-active agents, said surface-active agents being present in such a quantity as to make the blend homogeneous; 2) the dilution of the blend (I) in a dispersing phase consisting of oil or water with the addition of a surface- active agent, selected from non-ionic, anionic, polymeric surface-active agents, the quantity of the dispersing phase and surface-active agent being such as to obtain a nanoemulsion having a HLB different from that of the blend (I) .
Inventors:
DEL GAUDIO LUCILLA (IT)
LOCKHART THOMAS PAUL (IT)
BELLONI ALESSANDRA (IT)
BORTOLO ROSSELLA (IT)
TASSINARI ROBERTO (IT)
LOCKHART THOMAS PAUL (IT)
BELLONI ALESSANDRA (IT)
BORTOLO ROSSELLA (IT)
TASSINARI ROBERTO (IT)
Application Number:
PCT/EP2007/002863
Publication Date:
October 23, 2008
Filing Date:
March 28, 2007
Export Citation:
Assignee:
ENI SPA (IT)
POLIMERI EUROPA SPA (IT)
DEL GAUDIO LUCILLA (IT)
LOCKHART THOMAS PAUL (IT)
BELLONI ALESSANDRA (IT)
BORTOLO ROSSELLA (IT)
TASSINARI ROBERTO (IT)
POLIMERI EUROPA SPA (IT)
DEL GAUDIO LUCILLA (IT)
LOCKHART THOMAS PAUL (IT)
BELLONI ALESSANDRA (IT)
BORTOLO ROSSELLA (IT)
TASSINARI ROBERTO (IT)
International Classes:
C10L1/32; A61K8/06; A61K9/107; C09K8/536; C09K23/00
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